中国山区耕地利用边际化表现及其机理
Economic characteristics and the mechanism of farmland marginalization in mountainous areas of China
注：图中每个像元大小为10 km×10 km,
中国山区耕地利用边际化表现及其机理 |
| 李升发,李秀彬 |
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Economic characteristics and the mechanism of farmland marginalization in mountainous areas of China |
| LI Shengfa,LI Xiubin |
| 图9 1990-2000年和2000-2010年中国山区县耕地面积变化 注：图中每个像元大小为10 km×10 km, |
| Fig. 9 Farmland area changes in Chinese mountainous counties during the periods 1990-2000 and 2000-2010 |
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