中国山区耕地利用边际化表现及其机理
李升发,李秀彬

Economic characteristics and the mechanism of farmland marginalization in mountainous areas of China
LI Shengfa,LI Xiubin
图10 1990-2000年和2000-2010年中国山区县森林面积变化
Fig. 10 Forest area changes in Chinese mountainous counties during the periods 1990-2000 and 2000-2010