Biodiversity China biodiversity 9 Ecosystems 7 Conservation 5 Forestry 5 Landforms 3 Regression analysis 3 Rivers 3 agricultural land 3 species richness 3 Biodiversity conservation 2 Decision trees 2 Driving factors 2 Ecology 2 Ecosystem services 2 Land use 2 Petroleum reservoir evaluation 2 Plants (botany) 2 Soil conservation 2 Watersheds 2 abundance 2 climate change 2 endangered species 2 forest ecosystem 2 human activity 2 landscape ecology 2 rainfall 2 river basin 2 spatiotemporal analysis 2