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| 1 | Carbon isotopic records in paleosols over the Pliocene in Northern China: Implication on vegetation development and Tibetan uplift显示文摘Carbon isotopic composition of pedogenic carbonate can be used to estimate the proportion of C4 and C3 plants. Here we present carbon isotopic data of carbonate in a red earth section at Xifeng, central Loess Plateau. Results show that C4 vegetation increased in -4.4 Ma B.P., stabilized between 4.0 and 3.0 Ma B.P. The character and timing of C4 expansion on the Loess Plateau are similar, but different with other localities, e.g. Pakistan and Africa, implying that regional climate changes were main factors driving the expansion of C4 plants. This event is comparable in timing with increased aridity evidenced by Xifeng grain size and North Pacific eolian dust records. Therefore we argue that the Pliocene expansion of C4 plants in northern China might have been caused by the increased aridity, which in turn might be related to rapid uplift of the Tibetan Plateau. | JIANG Wenying PENG Shuzhen HAO Qingzhen LIU Dongsheng(LIU Tungsheng) | 2002 | Chinese Science Bulletin2002，47，8： | 8 |
| 2 | Toxic effects of chlortetracycline on maize growth,reactive oxygen species generation and the antioxidant response显示文摘The toxicity of chlortetracycline (CTC) on maize (Zea mays L.) growth and reactive oxygen species (ROS) generation was studied.The root and shoot lengths and fresh weights of maize seedlings were inhibited by CTC treatment (p < 0.05).Root length was more sensitive than other parameters with the EC 10 value of 0.064 mg/L.The spin trapping technique followed by electron paramagnetic resonance (EPR) analysis was used to quantify the ROS production.The ROS generated in maize roots after exposure to CTC was identified as hydroxyl radical (·OH).The EPR signal intensity correlated positively with the logarithm of CTC concentrations exposed (p < 0.05).The dynamic changes of malondialdehyde (MDA) contents and the antioxidative enzyme activities in maize roots were also determined.As compared to the control group,CTC was found to significantly increase MDA content.Treatment of maize roots with the ·OH scavenger sodium benzoate (SB) reduced the MDA content and enhanced the antioxidative enzyme activities.The results demonstrated the harmfulness of CTC at high dose to maize in the early developmental stage,and clarified that the inducement of ·OH is one of the mechanisms of CTC toxicity. | Bei Wen Yu Liu Peng Wang Tong WU Shuzhen Zhang Xiaoquan Shan Jingfen Lu | 2012 | Journal of Environmental Sciences2012，24，6： | 6 |
| 3 | Effects of purified zearalenone on selected immunological and histopathologic measurements of spleen in post-weanling gilts显示文摘The present study was aimed at investigating the adverse effects of dietary zearalenone(ZEA) on the lymphocyte proliferation rate(LPR), interleukin-2(IL-2), mRNA expressions of pro-inflammatory cytokines, and histopathologic changes of spleen in post-weanling gilts. A total of 20 crossbred piglets(Yorkshire × Landrace × Duroc) with an initial BW of 10.36 ± 1.21 kg(21 d of age) were used in the study.Piglets were fed a basal diet with an addition of 0.1.1,2.0, or 3.2 mg/kg purified ZEA for 18 d ad libitum.The results showed that LPR and IL-2 production of spleen decreased linearly(P < 0.05) as dietary ZEA increased. Splenic mRNA expressions of interleukin-1β(IL-1β) and interleukin-6(IL-6) were linearly upregulated(P < 0.05) as dietary ZEA increased. On the contrary, linear down-regulation(P<0.05) of mRNA expression of interferon-γ(IFN-γ) was observed as dietary ZEA increased. Swelling splenocyte in1.1 mg/kg ZEA treatments, atrophy of white pulp and swelling of red pulp in 2.0 and 3.2 mg/kg ZEA treatments were observed. The cytoplasmic edema in 1.1 mg/kg ZEA treatments, significant chromatin deformation in 2.0 mg/kg ZEA treatment and phagocytosis in 3.2 mg/kg ZEA treatment were observed.Results suggested that dietary ZEA at 1.1 to 3.2 mg/kg can induce splenic damages and negatively affect immune function of spleen in post-weanling gilts. | Peng Chen Tingjun Liu Shuzhen Jiang Zaibin Yang Libo Huang Faxiao Liu | 2017 | Animal Nutrition2017，，3： | 5 |
| 4 | Weathering Signals of Millennial-Scale Oscillations of the East-Asian Summer Monsoon over the Last 220 ka显示文摘This study generated a high-resolution paleoweathering record of the loess-soilsequence from the central Loess Plateau covering the last 220 ka using the ratio between the CBD(citrate-bicarbonate-dithionite) extractable free Fe2O3 (Fed) and total Fe2O3 (Fet). The new proxyshows a series of millennial oscillations, which are not necessarily documented by magneticsusceptibility from the same site. Because chemical weathering in the region depends mainly uponsummer precipitation and temperature, we interpret these changes to be a result of millennial-scalevariations in the strength of the East-Asian summer monsoon. Over the last glacial period, there isgeneral agreement between the loess weathering record and the GRIP ice δ18O record. The firstsuggests a rather stable summer monsoon pattern during the Last Interglacial period (marine δ18Ostage 5e). Large amplitude millennial oscillations of the summer monsoon seem to be particularlycharacteristic of the last glacial period whereas the fluctuations for the older periods are smoother. | GU0 Zhengtang PENG Shuzhen WEI Lanying LIU Tungsheng Institute of Geology, Chinese Academy of Sciences. P. O. Box 9825, Beijing 100029, China | 1999 | Chinese Science Bulletin1999，44，S1： | 5 |
| 5 | Sr-Nd-Pb Isotopic Compositions of the Neogene Eolian Deposits in the Xining Basin and Implications for Their Dust Sources显示文摘The Neogene eolian deposits in the Xining Basin are valuable archive for studying the evolution of the Asian monsoon system and geomorphic processes of Northwest China. The Neogene eolian deposits that paleomagnetically dated at about 14 Ma probably were sourced from the middle and west Qinghai-Tibetan Plateau(QTP) as indicated by elemental compositions and magnetic properties. This study provides the Sr-Nd-Pb isotopic ratios of different sediments(gravels from the river terraces, Neogene eolian deposits and Quaternary loess) in the Xining Basin. The results show that:(1) Sr-Nd isotopic compositions of terrace gravels are different from those of the Neogene and Quaternary eolian deposits, although the Nd isotope ratios of gravel on the 10 th terrace(T10) and eolian deposits are similar.(2) Pb isotopic compositions of river gravels are obviously different from the eolian deposits in the Xining Basin. However, Pb isotopic compositions of eolian deposits in the basin are similar to those of eolian deposits in the central Chinese Loess Plateau.(3) Sr-Nd-Pb isotope results indicate that the Neogene eolian deposits in the Xining Basin were probably sourced from remote areas outside of the basin by long-distance transportation. The Qaidam Basin is probably an important source area for the eolian deposits in the Xining Basin. | Fangming Zeng Meiyan Liang Shuzhen Peng Dongmei Yu Shuyuan Xiang | 2015 | Journal of Earth Science2015，26，5： | 4 |
| 6 | 152 W high-power blue diode laser operated at 447 nm显示文摘We demonstrate a high-power blue diode laser operated at 447 nm combining laser diodes using an optical fiber bundle. As many as 127 diode lasers at 447 nm were coupled into 400 μm/0.22 NA fibers using an aspherical lens group with different focus lengths. The bare fibers were mechanically bundled through high temperature ultraviolet adhesive after the coatings of the 127 fibers were stripped. The diameter of the fiber bundle was 6 mm. The total output power of such a bundle was 152 W with electro-optical conversion efficiency of 27.56%and the RMS power instability was less than ±1% within 3 h. | Peng Wu Ling Zhang Haijuan Yu Xiandan Yuan Zhiyan Zhang Pengfei Zhao Shuzhen Zou Chaojian He Yaoyao Qi Yingying Yang Gang Li Xubao Wang Xuechun Lin | 2017 | Journal of Semiconductors2017，38，7： | 4 |
| 7 | Effects of microtopography on spatial point pattern of forest stands on the semi-arid Loess Plateau,China显示文摘Microtopography may affect the distribution of forests through its effect on rain redistribution and soil water distribution on the semi-arid Loess Plateau,China.In this study,we investigated the characteristics of microtopography on two shady slopes(slope A,5 hm2,uniform slope;slope B,5 hm2,microtopography slope) and surveyed the height,the diameter at breast height and the location(x,y coordinates) of all selected individual trees(Robinia pseudoacacia Linn.,Pyrus betulifolia Bunge,Populus hopeiensis Hu & Chow,Armeniaca sibirica Lam.,Populus simonii Carr.and Ulmus pumila Linn.) on slope A and slope B in the watersheds of Wuqi county,Shaanxi province.Subsequently,the effects of microtopography on the spatial pattern of forest stands were analyzed using Ripley's K(r) function.The results showed that:(1) The maximal aggregation radiuses of the tree species on the uniform slope(slope A) were larger than 40 m,whereas those of the tree species on the microtopography slope(slope B) were smaller than 30 m.(2) On slope B,the spatial association of R.pseudoacacia with P.betulifolia,A.sibirica,P.simonii and U.pumila varied from being strongly negative to positive at microtopography scales.The spatial association of Populus hopeiensis Hu & Chow with U.pumila also varied from being strongly negative to positive at microtopography scales.However,there was no spatial association between P.betulifolia and P.hopeiensis,P.betulifolia and A.sibirica,P.betulifolia and P.simonii,P.betulifolia and U.pumila,P.hopeiensis and A.sibirica,P.hopeiensis and P.simonii,A.sibirica and P.simonii,A.sibirica and U.pumila,and P.simonii and U.pumila.On slope A,the spatial association between tree species were strongly negative.The results suggest that microtopography may shape tree distribution patterns on the semi-arid Loess Plateau. | WeiJun ZHAO Yan ZHANG QingKe ZHU Wei QIN ShuZhen PENG Ping LI YanMin ZHAO Huan MA Yu WANG | 2015 | Journal of Arid Land2015，7，3： | 3 |
| 8 | Chinese herbal medicine for chronic heart failure:a multicenter,randomized,double-blind,placebo-controlled trial显示文摘Objective:The purpose of this study was to assess the efficacy and safety of Chinese herbal medicine(CHM)in the treatment of chronic heart failure(CHF)patients according to syndrome differentiation.Methods:In this multicenter,randomized,double-blind,placebo-controlled clinical trial,a total of 220 CHF patients were assigned to receive CHM or placebo granules without decoction according to syndrome differentiation in addition to their standard western treatment for 4 weeks.The change in the left ventricular ejection fraction(LVEF)was the primary outcome,and the changes in the TCM syndrome scores(TCM-SS)and New York Heart Association functional classification(NYHA-FC)were the secondary outcomes. | Liangtao Luo Juan Wang Aiqing Han Peng Zhang Shuzhen Guo Chan Chen Xuegong Xu Qian Lin Huihui Zhao Wei Wang | 2014 | Journal of Traditional Chinese Medical Sciences2014，1，2： | 3 |
| 9 | Magnetostratigraphy and provenance of the Qingzhou loess in Shandong province显示文摘Loess deposits with varying thickness are widely distributed on the intermontane valleys and piedmont zones on the northern side of the central Shandong mountainous regions. However, the basal ages and material resources of the loess deposits are not clear. The paper studied the Qingzhou loess profile in Shandong with magnetostratigraphic and optical stimulated luminescence (OSL) methods and further investigated its main provenances with the mineralogical methods. The magnetostratigraphic results showed that the Brunhes/Matuyama (B/M) reversal boundary was not recognized, suggesting a basal age younger than 0.78 Ma. Extrapolations by sedimentation rates, based on the upper part depositional rate from the OSL age, the basal age of the Qingzhou loess is about 0.5 Ma. Until now, older loess deposits have not been reported on the northern side of the central Shandong mountainous regions. The results of the paper indicate that the loess deposits in this area might have strated from the Middle Pleistocene. The basal age of Qingzhou loess is approximately synchronous with the Xiashu loess in the middle-lower reaches of Yangtze River. Major components of clay minerals in the Qingzhou profile are dominated by illite. Other clay mineral compositions are mainly smectite, chlorite and kaolinite, which are similar with the Xifeng loess in the Loess Plateau. However, the contents of smectite and the ratios of illite and kaolinte in the Qingzhou loess samples are higher than those in the Xifeng loess samples of the Loess Plateau, indicating that the loess in the northern side of the central Shandong mountainous regions has different sources from that of the loess deposits in the Loess Plateau. The clay mineral analysis further reinforces the earlier conclu- sion that the marine strata exposed in the Laizhou Bay and the fluvial plain of the lower reaches of Yellow River during the glacier periods are the main material sources for the Qingzhou loess deposits, which is an indicator to the local aridification of the lower reaches of the Yellow River. Loess deposition in the central Shandong mountainous regions started at around 0.5 Ma. The age of Qingzhou loess is approximately synchronous with the ongoing high-latitude cold since the Middle Pleistocene, which indicates that strengthened East Asian winter monsoon was sufficiently energetic to bring substantial quantities of material from the marine strata exposed in the Laizhou Bay and the fluvial plain of the lower reaches of the Yellow River to the central Shandong mountainous regions. The results therefore suggest that both regional geological process and global changes were responsible for the formation of Qingzhou loess since Middle Pleistocene. | ShuZhen PENG LiJun ZHU GuoQiao XIAO YanSong QIAO ZhiDong GAO DongDong CHEN | 2011 | Journal of Arid Land2011，3，3： | 3 |
| 10 | the National Natural Science Foundation of China(41877029,41961130383);Royal SocietyNewton Advanced Fellowship(NAF\R1\191017);Wuhan Science and Technology Bureau(2019020701011469).显示文摘Due to the tremendous diversity of microbial organisms in topsoil,the estimation of saturated richness in a belowground ecosystem is still challenging.Here,we intensively surveyed the 16S rRNA gene in four 1 m2 sampling quadrats in a typical grassland,with 141 biological or technical replicates generating over 11 million sequences per quadrat.Through these massive data sets and using both non-asymptotic extrapolation and non-parametric asymptotic approaches,results revealed that roughly 15919±193,27193±1076 and 56985±2347 prokaryotic species inhabited in 1 m2 topsoil,classifying by DADA2,UPARSE(97%cutoff)and Deblur,respectively,and suggested a huge difference among these clustering tools.Nearly 500000 sequences were required to catch 50%species in 1 m2,while any estimator based on 500000 sequences would still lose about a third of total richness.Insufficient sequencing depth will greatly underestimate both observed and estimated richness.At least~911000,~3461000,and~1878000 sequences were needed for DADA2,UPARSE,and Deblur,respectively,to catch 80%species in 1 m2 topsoil,and the numbers of sequences would be nearly twice to three times on this basis to cover 90%richness.In contrast,α-diversity indexes characterized by higher order of Hill numbers,including Shannon entropy and inverse Simpson index,reached saturation with fewer than 100000 sequences,suggesting sequencing depth could be varied greatly when focusing on exploring differentα-diversity characteristics of a microbial community.Our findings were fundamental for microbial studies that provided benchmarks for the extending surveys in large scales of terrestrial ecosystems. | Shuzhen Li Xiongfeng Du Kai Feng Yueni Wu Qing He Zhujun Wang Yangying Liu Danrui Wang Xi Peng Zhaojing Zhang Arthur Escalas Yuanyuan Qu Ye Deng | 2022 | Soil Ecology Letters2022，4，3： | 1 |
| 11 | Evaluation of Ecological Environment Quality of Typical Forest Parks显示文摘Forest tourist areas have an excellent ecological environment,which is conducive to people's physical and mental health.In this study,Fuzhou National Forest Park and Wuying National Forest Park were selected as typical representatives of the southern and northern forest parks,respectively,which were compared by qualitative and quantitative research methods from such five aspects as air quality,climate quality,water environment quality,acoustic environment quality and biological population in some forest areas.The results showed that Fuzhou National Forest Park has a concentration of negative oxygen ions much higher than Wuying National Forest Park,and is thus more conducive to people's health;and it has the characteristics of warm and comfortable climate throughout the year and high biodiversity,but the noise is 4.35 db higher than Wuying National Forest Park,and the water quality is slightly poorer than that of Wuying National Forest Park.And its DO value is about 3.89 smaller in autumn than in summer.In Wuying National Forest Park,the concentration of negative oxygen ions is 53.6% lower than Fuzhou National Forest Park,but it is also above the national standard.The climate is only comfortable in June-August,and is colder or cooler in other months.The water quality is better than that of Fuzhou National Forest Park.In particular,the PH value is about 0.38 lower than that of Fuzhou National Forest Park.It has its own unique biological characteristics.The number of tourists in summer is higher,resulting in higher noise in summer than in autumn.The two forest parks in the north and the south are both good places for people to relax and enjoy. | Dongmei ZHANG Shuzhen PENG Weijun ZHAO Mengyuan GAO Junqing HAN | 2019 | Agricultural Biotechnology2019，8，5： | 1 |
| 12 | Detrital-Zircon Evidence for the Origin of the Late Quaternary Loess in Qingzhou,Shandong Province and Its Implications for the Evolution of the Yellow River显示文摘The loess depositions in Shandong Province are important parts of loess records in eastern China,but their origin and genetic linkage between the Yellow River and the Chinese Loess Plateau are still unclear.This paper presents the detrital-zircon evidence for the origin and provenance evolution of the Qingzhou loess in Shandong Province.The results show that:(1) the Qingzhou loess was sourced from the sandy lands within the North China Plain that were fed by the silty materials from the Chinese Loess Plateau,the mountainous region in central Shandong Province,and the Yanshan and Taihang Mountains;(2) the Qingzhou loess was mainly sourced from the loess materials transported by the Yellow River,and the basal age of the Qingzhou loess indicates the timing of intensified aridification of the North China Plain and integration of the Yellow River was not later than 0.5 Ma;and(3) the provenance and grain-size of the Qingzhou loess underwent a significant transition at ~0.22 Ma,which was related to the expansion of the sandy land within the North China Plain.Our results indicate that the origin of the loess on the North China Plain are obviously different from the loess on the Chinese Loess Plateau,and the increase of grain-size and accumulation rate in the loess records on the North China Plain at ~0.22 Ma was due to the environmental deterioration of the eastern China. | Yanfei Shen Meiyan Liang Jianxun Wu Shuzhen Peng Guoqiao Xiao | 2022 | Journal of Earth Science2022，33，1： | 1 |
| 13 | Hydrogen peroxide treatments inhibit the browning of fresh-cut Chinese water chestnut显示文摘 | Litao Peng Shuzhen Yang Qiong Li | 2008 | Postharvest Biology and Technology2008，47，： | 1 |
| 14 | Spatial Distribution Characteristics of Forest Parks in Shandong Province显示文摘The spatial distribution characteristics of forest parks in Shandong Province were studied using geographical concentration index,Gini coefficient,and ArcGIS analysis software.The results show that the forest parks in Shandong Province are concentrated in the province and in the five subregions,and the equilibrium degree of the distribution is low.The density of forest parks in Shandong Province is high in eastern Shandong and central Shandong but low in western Shandong.The number of forest parks in the eastern coastal areas of Shandong Province is larger than the number of forest parks in the inland areas of Shandong Province. | Zhao Weijun Peng Shuzhen Liu Xiaomei Zhang Dongmei Han Junqing Gao Mengyuan Wang Chenqiu | 2019 | Meteorological and Environmental Research2019，10，5： | 0 |
| 15 | Construction of Early Warning Mechanism of Tourism Talent Training显示文摘The demand of tourism industry is the foothold and starting point of tourism talent training.How to adapt to the economic and social demand for tourism talent in the new era has become an important issue of The Times for tourism higher education talent training.By sorting out the research dynamics of talent training and industrial demand integration,the early warning mechanism of tourism talent training and industry demand is studied from the perspective of talent and industry integration.The early warning index system of tourism talent training and industrial demand is constructed using AHP method,and the problems existing in tourism talent training are found through real-time data observation and warning situation handling,thus providing decision-making support for the development of tourism management major in colleges and universities. | DONG Hongxia Lv Chen PENG Shuzhen | 2020 | Journal of Landscape Research2020，12，4： | 0 |
| 16 | Innovation Research of International Talent Training Mode of Tourism Management Major in“The Belt and Road”Regions显示文摘The structural scarcity of international talents in tourism industry has become the bottleneck restricting tourism cooperation community of“the Belt and Road”countries and regions,and“the Belt and Road”regional tourism cooperation community has forced the cultivation and promotion of tourism management professionals.Therefore,the research on cultivation and promotion path of international tourism management professionals in“the Belt and Road”regions has become a hot topic in theoretical and practical circles.“The Belt and Road”initiative is put forward to force the innovation of international talent training mode of tourism management major.After investigation,the existing problems in the development of tourism management undergraduate major in colleges and universities are accurately grasped.Eventually,the international talent training mode of tourism management major in“the Belt and Road”regions is innovated from the following aspects:reforming mutual recognition credit system and international enrollment system,innovating the concept of personnel training,reforming practical talents system,innovating curriculum system,and establishing cultivation and promotion path platform for international talents. | WANG Hui PENG Shuzhen DONG Hongxia | 2020 | Journal of Landscape Research2020，12，5： | 0 |
| 17 | Dynamic Changes of Antibodies to SARS-CoV-2 in COVID-19 Patients at Early Stage of Outbreak显示文摘The coronavirus disease 2019(COVID-19),caused by SARS-CoV-2,has spread around the world with high mortality.To diagnose promptly and accurately is the vital step to effectively control its pandemic.Dynamic characteristics of SARSCoV-2-specific antibodies which are important for diagnosis of infection have not been fully demonstrated.In this retrospective,single-center,observational study,we enrolled the initial 131 confirmed cases of COVID-19 at Jin-Yin-Tan Hospital who had at least one-time antibody tested during their hospitalization.The dynamic changes of IgM and IgG antibodies to SARS-CoV-2 nucleocapsid protein in 226 serum samples were detected by ELISA.The sensitivities of IgM and IgG ELISA detection were analyzed.Result showed that the sensitivity of the IgG ELISA detection(92.5%)was significantly higher than that of the IgM(70.8%)(P\0.001).The meantimes of seroconversion for IgM and IgG were6 days and 3 days,respectively.The IgM and IgG antibody levels peaked at around 18 days and 23 days,and then IgM fell to below the baseline level at about day 36,whereas IgG maintained at a relatively high level.In conclusion,antibodies should be detected to aid in diagnosis of COVID-19 infection.IgG could be a sensitive indicator for retrospective diagnosis and contact tracing,while IgM could be an indicator of early infection. | Huaqing Shu Shuzhen Wang Shunan Ruan Yaxin Wang Jiancheng Zhang Yin Yuan Hong Liu Yongran Wu Ruiting Li Shangwen Pan Yaqi Ouyang Shiying Yuan Peng Zhou You Shang | 2020 | Virologica Sinica2020，35，6： | 0 |
| 18 | CORRECTION:Correction to: Dynamic Changes of Antibodies to SARS-CoV-2 in COVID-19 Patients at Early Stage of Outbreak显示文摘Due to type-setting error,the affiliation of author Huaqing Shu and Shuzhen Wang was mislabeled.The affiliation footnotes in the byline for Huaqing Shu and Shuzhen Wang should read as given above.We apologized for these errors. | Huaqing Shu Shuzhen Wang Shunan Ruan Yaxin Wang Jiancheng Zhang Yin Yuan Hong Liu Yongran Wu Ruiting Li Shangwen Pan Yaqi Ouyang Shiying Yuan Peng Zhou You Shang | 2020 | Virologica Sinica2020，35，6： | 0 |
| 19 | The color reflectance of marine-terrigenous deposits in LZ908 borehole in south coastal plain of the Laizhou Bay显示文摘Color measuring is characterized by high resolution,high efficiency,and low cost. The application becomes increasingly common for tracing sediment sources and climate variation. Borehole LZ908 in the south coastal plain of the Laizhou Bay in northeast China,was used,of which the top 54 m containing all marine facies was focused,to test the feasibility of colorimetry as a climate indi-cator using visible light reflectance spectra and L*a*b*measurement results. The results show a good correction between lightness and calcium carbonate content in marine-terrigenous deposits;therefore,these deposits can be used as a proxy to study climate changes. Factor-analysis on the first derivative values of the raw visible light reflectance spectra produced three principal factors corresponding to goethite,organic matter,and hematite. Down hole variations in the three fac-tor scores,lightness,calcium carbonate content,and grain size were quite consistent. Moreover,high lightness and low factor scores in goethite,hematite,and organics indicated glacial regression deposits,while low lightness and high factor scores in goethite,hematite,and organics indicated interglacial transgression deposits. | ZHAO Na XU Xingyong YU Hongjun YAO Jing SU Qiao PENG Shuzhen | 2011 | Acta Oceanologica Sinica2011，30，4： | 0 |
| 20 | Analysis of Drought Characteristics in the Inland Areas of Shandong Province from 1960 to 2013显示文摘Drought is one of the major meteorological disasters affecting the climate in China.In this paper,the interannual variation and seasonal distribution changes of drought at different time scales were analyzed with the standardized precipitation index( SPI) as the drought evaluation criterion to the precipitation data of the 5 meteorological stations of Jinan,Tai'an,Yiyuan,Shen County and Yanzhou from 1960 to 2013.The results showed that:(1) the frequency of drought was low in spring and summer in inland areas of Shandong Province,while autumn had frequent occurrences of moderate drought,and winter had frequent occurrences of heavy and severe droughts.(2) In the 1960 s,1980 s and early 21^(st) century,the number of droughts increased significantly,and the SPI values showed a significant decrease.(3) The 3-month time scale range was wide,during which the frequency of occurrence was high.The trend of SPI changes at the 12-month time scale was affected by the accumulation of antecedent precipitation,and the change was slow.The research results can provide a scientific reference for arid climate analysis and water resources management in agriculture and production in inland areas of Shandong Province. | Weijun ZHAO Shuzhen PENG Xiangfan WEI Xue DING Yu GAO | 2018 | Agricultural Biotechnology2018，7，6： | 0 |
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