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34篇 您的检索式:作者名="Jinwei DONG"
    题名 作者 年代 出处 被引量
1Cropland redistribution to marginal lands undermines environmental sustainability显示文摘Cropland redistribution to marginal land has been reported worldwide;however,the resulting impacts on environmental sustainability have not been investigated sufficiently.Here we investigated the environmental impacts of cropland redistribution in China.As a result of urbanization-induced loss of high-quality croplands in south China(~8.5 t ha^(-1)),croplands expanded to marginal lands in northeast(~4.5 t ha^(-1)) and northwest China(~2.9 t ha^(-1)) during 1990-2015 to pursue food security.However,the reclamation in these low-yield and ecologically vulnerable zones considerably undermined local environmental sustainability,for example increasing wind erosion(+3.47%),irrigation water consumption(+34.42%),fertilizer use(+20.02%) and decreasing natural habitats(-3.11%).Forecasts show that further reclamation in marginal lands per current policies would exacerbate environmental costs by 2050.The future cropland security risk will be remarkably intensified because of the conflict between food production and environmental sustainability.Our research suggests that globally emerging reclamation of marginal lands should be restricted and crop yield boost should be encouraged for both food security and environmental benefits.Wenhui Kuang Jiyuan Liu Hanqin Tian Hao Shi Jinwei Dong Changqing Song Xiaoyong Li Guoming Du Yali Hou Dengsheng Lu Wenfeng Chi Tao Pan Shuwen Zhang Rafiq Hamdi Zherui Yin Huimin Yan Changzhen Yan Shixin Wu Rendong Li Jiuchun Yang Yinyin Dou Wenbin Wu Liqiao Liang Bao Xiang Shiqi Yang 2022National Science Review2022,9,1:13
2Continuous land cover change monitoring in the remote sensing big data era显示文摘Since the late 20th century,global change issues have attracted lots of attention.As a key component of global changes,land cover and land use information has been increasingly important for improved understanding of global environmental changes and feedbacks between social and environmental systems(Verburg et al.,2015).A set of national and global scale land cover/use products with higher spatial and temporal resolutions have been developed to fill this gap.In China,existing efforts include China’sDONG JinWei KUANG WenHui LIU JiYuan 2017Science China Earth Sciences2017,60,12:13
3Variations of Vegetation Phenology Extracted from Remote Sensing Data over the Tibetan Plateau Hinterland during 2000–2014显示文摘How vegetation phenology responds to climate change is a key to the understanding of the mechanisms driving historic and future changes in regional terrestrial ecosystem productivity. Based on the 250-m and 8-day moderate resolution imaging spectroradiometer(MODIS) normalized difference vegetation index(NDVI) data for 2000-2014 in the Three-River Source Region(TRSR) of Qinghai Province, China, i.e., the hinterland of the Tibetan Plateau, we extracted relevant vegetation phenological information(e.g., start, end, and length of growing season) and analyzed the changes in the TRSR vegetation in response to climate change. The results reveal that, under the increasingly warm and humid climate, the start of vegetation growing season(SOS) advanced 1.03 day yr-1 while the end of vegetation growing season(EOS) exhibited no significant changes, which led to extended growing season length. It is found that the SOS was greatly affected by the preceding winter precipitation, with progressively enhanced precipitation facilitating an earlier SOS. Moreover, as the variations of SOS and its trend depended strongly on topography, we estimated the elevation break-points for SOS. The lower the elevations were, the earlier the SOS started. In the areas below 3095-m elevation, the SOS delay changed rapidly with increasing elevation;whereas above that, the SOS changes were relatively minor. The SOS trend had three elevation break-points at 2660, 3880, and 5240 m.Ya LIU Junbang WANG Jinwei DONG Shaoqiang WANG Hui YE 2020Journal of Meteorological Research2020,34,4:8
4Impacts of ecological restoration projects on agricultural productivity in China显示文摘在农田数量和质量的变化由于陆地使用是国家食物安全的批评担心,特别地为中国。尽管有重要生态的效果,生态的恢复节目(ERP ) ,从 1999 开始了,显然改变了瓷器农田和农业生产率的空间模式。从 2000 ~ 2008 把动态数据基于农田首先与主要生产率建模的 30-m 分辨率和基于卫星的网源于卫星图象,我们在 ERP 引起的农业生产率上识别了影响,包括为格林的谷物,节目(GFGP ) 和到湖(RCTL ) 的回收农田编程序。我们的结果显示农业生产率与 132.67lis 的率输了。在 R 的射击的 Pb 的累积。pseudoacacia 比另外的种类显著地高。在学习区域的土壤的 Pb 的数量是 s 吗??QIN Yuanwei YAN Huimin LIU Jiyuan DONG Jinwei CHEN Jingqing XIAO Xiangming 2013Journal of Geographical Sciences2013,23,3:8
5Mapping paddy rice distribution using multi-temporal Landsat imagery in the Sanjiang Plain, northeast China显示文摘稻米饭分发的信息为食物生产和甲烷排放计算是必要的。基于物候学的算法在由识别唯一的泛滥印射稻稻田被利用了,移植的幼苗用多时间的中等分辨率(到 1 km 的 500 m ) 分阶段执行图象。在这研究,我们开发了简单算法用多时间的 Landsat 形象在地区性的规模在好分辨率识别稻米饭。从 2010-2012 的十六幅 Landsat 图象被用来在 Sanjiang 平原产生 30 m 稻米饭地图,在中国的主要的稻米饭耕作区域的东北 Chinaone。三个植被索引,规范的差别植被索引(NDVI ) ,提高的植被索引(EVI ) ,和陆地表面浇索引(LSWI ) ,被用来在充满 / 移植并且成熟的阶段期间识别稻田。结果的基于 Landsat 的稻米饭地图上的稻米饭的用户和制片人精确性分别地是 90% 和 94% 。基于 Landsat 的稻米饭地图是在国家陆地盖子数据集上的稻米饭层上的改进,它在好决定的图象上通过视觉解释和数字化被产生。农业普查数据实质地少报稻米饭区域,关于它为食物上的研究的使用的涨的严肃的担心安全。Cui JIN Xiangming XIAO Jinwei DONG Yuanwei QIN Zongming WANG 2016Frontiers of Earth Science2016,10,1:5
6Comparison of three remotely sensed drought indices for assessing the impact of drought on winter wheat yield显示文摘Agricultural drought threatens food security.Numerous remote-sensing drought indices have been developed,but their different principles,assumptions and physical quantities make it necessary to compare their suitability for drought monitoring over large areas.Here,we analyzed the performance of three typical remote sensing-based drought indices for monitoring agricultural drought in two major agricultural production regions in Shaanxi and Henan provinces,northern China(predominantly rain-fed and irrigated agriculture,respectively):vegetation health index(VHI),temperature vegetation dryness index(TVDI)and drought severity index(DSI).We compared the agreement between these indices and the standardized precipitation index(SPI),soil moisture,winter wheat yield and National Meteorological Drought Monitoring(NMDM)maps.On average,DSI outperformed the other indices,with stronger correlations with SPI and soil moisture.DSI also corresponded better with soil moisture and NMDM maps.The jointing and grain-filling stages of winter wheat are more sensitive to water stress,indicating that winter wheat required more water during these stages.Moreover,the correlations between the drought indices and SPI,soil moisture,and winter wheat yield were generally stronger in Shaanxi province than in Henan province,suggesting that remote-sensing drought indices provide more accurate predictions of the impacts of drought in predominantly rain-fed agricultural areas.Jianxi Huang Wen Zhuo Ying Li Ran Huang Fernando Sedano Wei Su Jinwei Dong Liyan Tian Yanbo Huang Dehai Zhu Xiaodong Zhang 2020International Journal of Digital Earth2020,13,4:4
7Experimental study on the pyrolysis of Shenhua coal to produce hydrogen显示文摘Based on thermogravimetric analysis, kinetic parameters of Shenhua coal, such as activation energy and frequency factor have been got from the TG / DTG results. It showed that activation energy is the smallest at the temperature from 850℃ to 930℃ with heating rate of 15℃·min-1 . Pyrolysis was further carried out on a fixed-bed reactor with different heating rate. The production of hydrogen has been studied in particular. It gave the highest hydrogen production at the heating rate of 15℃·min-1 . And it also found the increase of hydrogen production with the raise of temperature. Furthermore, catalytic pyrolysis of coal was done at adding 2% of transition-metal oxides to discover the impact of catalysts upon coal pyrolysis at heating rate of 15℃·min-1 . It indicated that both N-type and P-type oxide enhanced hydrogen production in coal pyrolysis. However, it showed that N-type oxide increased hydrogen production at medium temperatures, and P-type oxides improved hydrogen production at higher temperatures.Xiangui Wang Yue Zhang Ling Dong Lixin Zhang Xiaoxiang Li Jinwei Jia Long He Xinqian Shu 2013Journal of Thermal Science2013,22,3:3
8The 2012 Flash Drought Threatened US Midwest Agroecosystems显示文摘In the summer of 2012, the US Midwest, the most productive agricultural region in the world, experienced the most intense and widespread drought on record for the past hundred years. The 2012 drought, characterized as ‘flash drought’, developed in May with a rapid intensification afterwards, and peaked in mid-July. ~76% of crop region and 60% of grassland and pasture regions have been under moderate to severe dry conditions. This study used multiple lines of evidences, i.e., in-situ AmeriFlux measurements, spatial satellite observations, and scaled ecosystem modeling, to provide independent and complementary analysis on the impact of 2012 flash drought on the US Midwest vegetation greenness and photosynthesis carbon uptake. Three datasets consistently showed that 1) phenological activities of all biomes advanced 1–2 weeks earlier in 2012 compared to the other years of 2010–2014;2) the drought had a more severe impact on agroecosystems(crop and grassland) than on forests;3) the growth of crop and grassland was suppressed from June with significant reduction of vegetation index, sun-induced fluorescence(SIF) and gross primary production(GPP), and did not recover until the end of growing season. The modeling results showed that regional total GPP in 2012 was the lowest(1.76 Pg C/yr) during 2010–2014, and decreased by 63 Tg C compared with the other-year mean. Agroecosystems, accounting for 84% of regional GPP assimilation, were the most impacted by 2012 drought with total GPP reduction of 9%, 7%, 6%, and 29% for maize, soybean, cropland, and grassland, respectively. The frequency and severity of droughts have been predicted to increase in future. The results imply the importance to investigate the influences of flash droughts on vegetation productivity and terrestrial carbon cycling.JIN Cui LUO Xue XIAO Xiangming DONG Jinwei LI Xueming YANG Jun ZHAO Deyu 2019Chinese Geographical Science2019,29,5:2
9Control Research of Dual Chamber Hydro-Pneumatic Suspension显示文摘Vehicle riding comfort and handling stability are directly affected by suspension performance.A novel dual chamber hydro-pneumatic(DCHP)suspension system is developed in this paper.Based on the structural analysis of the DCHP suspension,an equivalent suspension model is proposed for the control purpose.A cuckoo search(CS)based fuzzy PID controller is proposed for the control of the DCHP suspension system.The proposed controller combines the advantage of fuzzy logic and PID controller,and CS algorithm is used to regulate the membership functions and PID parameters.Compared with tradition LQR controller and passive suspension system,the CSFPID controller can reduce the sprung mass acceleration,and at the same time with no deterioration of tire deflection.Jinwei Sun Mingming Dong Zhiguo Wang Baoyu Li Liang Gu 2018Journal of Beijing Institute of Technology2018,27,4:2
10The relationships between urban-rural temperature difference and vegetation in eight cities of the Great Plains显示文摘Interpreting the relationship between urban heat island (UHI) and urban vegetation is a basis for understanding the impacts of underlying surfaces on UHL The calculation of UHI intensity (UHII) requires observations from paired stations in both urban and rural areas.Due to the limited number of paired meteorological stations,many studies have used remotely sensed land surface temperature,but these time-series land surface temperature data are often heavily affected by cloud cover and other factors.These factors,together with the algorithm for inversion of land surface temperature,lead to accuracy problems in detecting the UHII,especially in cities with weak UHII.Based on meteorological observations from the Oklahoma Mesonet,a world-class network,we quantified the UHII and trends in eight cities of the Great Plains,USA,where data from at least one pair of urban and rural meteorological stations were available.We examined the changes and variability in urban temperature,UHII,vegetation condition (as measured by enhanced vegetation index,EVI),and evapotranspiration (ET).We found that both UHI and urban cold islands (UCI) occurred among the eight cities during 2000-2014 (as measured by impervious surface area).Unlike what is generally considered,UHII in only three cities significantly decreased as EVI and ET increased (p < 0.1),indicating that the UHI or UCI cannot be completely explained simply from the perspective of the underlying surface.Increased vegetative cover (signaled by EVI) can increase ET,and thereby effectively mitigate the UHI.Each study station clearly showed that the underlying surface or vegetation affects urban-rural temperature,and that these factors should be considered during analysis of the UHI effect over time.Yaoping CUI Xiangming XIAO Russell B DOUGHTY Yaochen QIN Sujie LIU Nan LI Guosong ZHAO Jinwei DONG 2019Frontiers of Earth Science2019,13,2:2
11Green-up dates in the Tibetan Plateau have continuously advanced from 1982 to 2011显示文摘Zhang Geli Zhang Yangjian Dong Jinwei 2013Proc Natl Acad Sci USA2013,110,11:1
12Mapping deciduous rubber plantations through integration of PALSAR and multi-temporal Landsat imagery显示文摘Jinwei Dong Xiangming Xiao Bangqian Chen Nathan Torbick Cui Jin Geli Zhang Chandrashekhar Biradar 2013Remote Sensing of Environment2013,,:1
13Quantifying the response of surface urban heat island to urbanization using the annual temperature cycle model显示文摘Urban heat island(UHI),driving by urbanization,plays an important role in urban sustainability under climate change.However,the quantification of UHI’s response to urbanization is still challenging due to the lack of robust and continuous temperature and urbanization datasets and reliable quantification methods.This study proposed a framework to quantify the response of surface UHI(SUHI)to urban expansion using the annual temperate cycle model.We built a continuous annual SUHI series at the buffer level from 2003 to 2018 in the Jing-Jin-Ji region of China using MODIS land surface temperature and imperviousness derived from Landsat.We then investigated the spatiotemporal dynamic of SUHI under urban expansion and examined the underlying mechanism.Spatially,the largest SUHI interannual variations occurred in suburban areas compared to the urban center and rural areas.Temporally,the increase in SUHI under urban expansion was more significant in daytime compare to nighttime.We found that the seasonal variation of SUHI was largely affected by the seasonal variations of vegetation in rural areas and the interannual variation was mainly attributed to urban expansion in urban areas.Additionally,urban greening led to the decrease in summer daytime SHUI in central urban areas.These findings deepen the understanding of the long-term spatiotemporal dynamic of UHI and the quantitative relationship between UHI and urban expansion,providing a scientific basis for prediction and mitigation of UHI.Huidong Li Yuyu Zhou Gensuo Jia Kaiguang Zhao Jinwei Dong 2022Geoscience Frontiers2022,13,1:1
14Lipopolysaccharide-Induced Proliferation of the Vasa Vasorum in a Rabbit Model of Atherosclerosis as Evaluated by Contrast-Enhanced Ultrasound Imaging and Histology显示文摘Jinwei Tian Sining Hu Xue Han Nana Dong Huai Yu Yanli Sun Bo Yu 2012Inflammation2012,,4:1
15Experimental and numerical investigation of thermal -hydraulic performance in wavy fin-and-flat tube heat exchangers显示文摘Junqi Dong Jiangping Chen Wenfeng Zhang Jinwei Hu 2010Applied Thermal Engineering2010,,11:1
16Tracking the dynamics of paddy rice planting area in 1986-2010 through time series Landsat images and phenology-based algorithms显示文摘Dong Jinwei Xiao Xiangming Kou Weili 2015Remote Sensing of Environment2015,160,:1
17Mapping paddy rice planting area in cold temperate climate region through analysis of time series Landsat 8(OLI), Landsat 7(ETM +)and MODIS imagery显示文摘Qin Yuanwei Xiao Xiangming Dong Jinwei 2015ISPRS Journal of Photogrammetry and Remote Sensing2015,105,:1
18Mapping paddy rice planting areas through time series analysis of MODIS land surface temperature and vegetation index data显示文摘Zhang Geli Xiao Xiangming Dong Jinwei 2015ISPRS Journal of Photogrammetry and Remote Sensing2015,106,:1
19Increasing cropping intensity in response to climate warming in Tibetan Plateau, China显示文摘Zhang Geli Dong Jinwei Zhou Caiping 2013Field Crops Research2013,142,:1
20China's sloping land conversion program at the beginning of 21st century and its habitat suitability in typical region of Loess Plateau显示文摘Dong Jinwei Liu Jiyuan Shi Wenjiao 0,,01:1
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