| Changes in soil carbon storage due to over-grazing in Leymus chinensis steppe in the Xilin River Basin of Inner Mongolia |
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| 作者姓名： | Li Linghao Chen Zuozhong Wang Qibing Liu Xianhu Li Yonghong |
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| 作者单位： | Institute of Botany，Chinese Academy of Sciences，Beijing 100093，China,Institute of Botany，Chinese Academy of Sciences，Beijing 100093，China,Institute of Botany，Chinese Academy of Sciences，Beijing 100093，China,Institute of Botany，Chinese Academy of Sciences，Beijing 100093，China,Institute of Botany，Chinese Academy of Sciences，Beijing 100093，China |
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| 基金项目： | This research was supported by the Natural Science Foundation of China. |
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| 摘 要： | The long—term changes in soil carbon storage due tO land—use change in Leymus chinensis steppe in the Xilin River Basin of Inner Mongolia since 1950’S was examined．The results showed that over—grazing was the most serious and wide—spread non—sustainable land—use practice in the area．an average of about 12．4％of the total carbon initially stored in soils(0—20cm soil layer)for seven major L.chinensis communities in the Xilin River Basin has been lost due to over-grazing over the 40一year period．Most carbon loss due tO over—grazing was from the active and slow soil carbon pools which had a residence time of 10’S of years．
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| 关 键 词： | over-grazing；soil carbon；Leymus chinemis steppe；Xilin River Basin． |
| 收稿时间： | 1996-12-09 |
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