China County Data Collection, Geography and Population
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https://cmr.earthdata.nasa.gov/search/concepts/C1214584255-SCIOPS.html
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资源简介：
The Geography and Population dataset contains three variables which describe county level demographics and geographic references. These variables include: 1) County area (hectares), 2) Lat. and Long. of county centroid, and 3) County population.
See the references for the sources of these data.
China County Data collection contains seven datasets which were compiled in the early 1990s for use as inputs to the DNDC (Denitrification-Decomposition) model at UNH. DNDC is a computer simulation model for predicting carbon (C) and nitrogen (N) biogeochemistry in agricultural ecosystems. The datasets were compiled from multiple Chinese sources and all are at the county scale for 1990. The datasets which comprise this collection are listed below.
1) Agricultural Management
2) Crops
3) N-Deposition
4) Geography and Population
5) Land Use
6) Livestock
7) Soil Properties
提供机构：
SCIOPS
