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2001-2010年青藏高原草地生长状况遥感动态监测
引用本文:冯琦胜,高新华,黄晓东,于惠,梁天刚.2001-2010年青藏高原草地生长状况遥感动态监测[J].兰州大学学报(自然科学版),2011(4):75-81,90.
作者姓名:冯琦胜  高新华  黄晓东  于惠  梁天刚
作者单位:兰州大学草地农业科技学院农业部草地农业生态系统学重点实验室;
基金项目:教育部高等学校科技创新工程重大项目培育资金项目(708089); 国家自然科学基金项目(30972135); 国家科技支撑计划项目(2009BAC53B01); 国家高新技术研究发展专项(2007AA10Z232)
摘    要:基于1 970个地面实测数据,结合MODIS EVI和NDVI数据,利用留一法交叉验证方法确定了适合青藏高原地区草地生长状况的遥感反演模型,估算了2001-2010年草地生物量干重空间分布格局,分析了近10年草地生物量变化动态.结果表明:青藏高原地区MODIS的NDVI较EVI能更好地估算草地生长状况,指数模型反演的草...

关 键 词:草地地上生物量  空间变化  反演模型  留一法  交叉验证  青藏高原

Remote sensing dynamic monitoring of grass growth in Qinghai-Tibet plateau from 2001 to 2010
FENG Qi-sheng,GAO Xin-hua,HUANG Xiao-dong,YU Hui,LIANG Tian-gang Key Laboratory of Grassl, Agro-ecology System with the Ministry of Agriculture,School of Pastoral Agriculture Science , Technology,Lanzhou University,Lanzhou ,China.Remote sensing dynamic monitoring of grass growth in Qinghai-Tibet plateau from 2001 to 2010[J].Journal of Lanzhou University(Natural Science),2011(4):75-81,90.
Authors:FENG Qi-sheng  GAO Xin-hua  HUANG Xiao-dong  YU Hui  LIANG Tian-gang Key Laboratory of Grassl  Agro-ecology System with the Ministry of Agriculture  School of Pastoral Agriculture Science  Technology  Lanzhou University  Lanzhou  China
Institution:FENG Qi-sheng,GAO Xin-hua,HUANG Xiao-dong,YU Hui,LIANG Tian-gang Key Laboratory of Grassland Agro-ecology System with the Ministry of Agriculture,School of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China
Abstract:Using leave-one-out cross validation method,a suitable inversion model was established in Qinghai-Tibet plateau based on 1970 ground observed data combined with MODIS EVI and NDVI data.Then the spatialdistribution pattern of grassland dry biomass during 2001-2010 was simulated and grassland biomass dynamicsfor nearly 10 years was analyzed.The results show that NDVI is superior to EVI in Qinghai-Tibet plateau,theexponential model has the highest accuracy for calculating fresh and dry biomass,but the power mo...
Keywords:grassland aboveground biomass  spatial variation  inversion model  leave-one-out cross validation method  cross validation  Qinghai-Tibet plateau  
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