摘要
河湟谷地是青海省最重要农业区和粮食生产基地,分析河湟谷地的农业干旱演变趋势,对于保障青海省农业健康发展有着十分重要的意义。本数据集是在MOD09GA数据(地表反射率)和MOD11A1产品(LST)的基础上,利用植被健康指数(Vegetation Health Index,VHI)计算得到,植被健康指数是耦合植被归一化指数(NDVI)和地表温度(LST)两者的相互关系来反映地区农业干旱程度的参数,本数据集覆盖的地区为河湟谷地,时间序列为2000-2020年的3-11月(生长季),3-5月(春季),6-8月(夏季),9-11月(秋季),空间分辨率为1 km×1km,数据格式为.shp和.tif,由406个文件组成,数据量为20.9 MB。
Yellow River-Huangshui River valley(YHV)is the most important agricultural area and grain production base in Qinghai province.The analysis of the evolution trend of the agricultural drought in YHV is of great significance for ensuring the healthy development of agriculture in Qinghai province.The dataset is obtained using the vegetation health index(VHI)calculation model and the daily land reflectance MOD09GA and daily land temperature MOD11A1 data.VHI is the metric parameter that can couple the normalized differential vegetation index(NDV)and land surface temperature(LsT)to reflect the agricultural drought level of the region.The area covered by this dataset is YHV,and the observation duration is from March to November(Vegetation growing season)during 2000-2020.The dataset is in the GeoTif format,has a spatial resolution of 1 km,comprises 406 files,has a data size of 20.9 MB.
作者
孙南沙
陈琼
刘峰贵
周强
郭媛媛
Sun,N.S.;Chen,Q.;Liu,F.G.;Zhou,Q.;Guo,Y.Y.(School of Geographic Science,Qinghai Normal University,Xining,Qinghai 810008,China;Academy of Plateau Science and Sustainability,Xining,Qinghai 810008,China;Center for Agricultural Resources Research,Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Shijiazhuang,Hebei 050022,China)
出处
《全球变化数据学报（中英文）》
CSCD
2022年第4期589-596,V0589-V0596,共16页
Journal of Global Change Data & Discovery
基金
中华人民共和国科学技术部(2019YFA0606902)。
关键词
河湟谷地
农业干旱
生长季
植被健康指数
Yellow River-Huangshui River valley
agricultural drought
vegetation health index
growing season
