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- 研究 (5)
- 旱地 (4)
- dry farming (2)
- 农业技术 (2)
- 玉米 (2)
- arid regions (1)
- arid regions agriculture (1)
- asia (1)
- biodiversity conservation (1)
- climatic changes (1)
- conservation tillage (1)
- economic aspects (1)
- effect of human beings on (1)
- environmental aspects (1)
- farms, small (1)
- humus (1)
- management (1)
- natural disasters (1)
- nature (1)
- pedologie (1)
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著者:
PRC-GEF Partnership on Land Degradation in Dryland Ecosystems Department of Science and Technology
National Forestry and Grassland Administration.
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