围封年限对草地生态系统碳分配的影响

贾宏涛; 蒋平安; 赵成义; 胡玉昆; 李赟

The influence of enclosing life on carbon distribution of qrassland ecosystem

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DOI：10.7606/j.issn.1000-7601.2009.01.07

Key Words: enclosing years grassland ecosystem soil organic carbon degraded grassland

作者	单位
贾宏涛	College of Pratacultural and Environment al Sciences， Xingjian Agricultural University, Urumqi, Xinjiang 830052， China
蒋平安	College of Pratacultural and Environment al Sciences， Xingjian Agricultural University, Urumqi, Xinjiang 830052， China
赵成义	Xinjiang Ecological Geograp hy Research Institute of Chinese Academy of Sciences， Urumqi, Xinjiang 830011， China
胡玉昆	Xinjiang Ecological Geograp hy Research Institute of Chinese Academy of Sciences， Urumqi, Xinjiang 830011， China
李赟	College of Pratacultural and Environment al Sciences， Xingjian Agricultural University, Urumqi, Xinjiang 830052， China

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Abstract:

Aimed at the degraded grassland enclosed for different years, study w as made on the distribution of organic carbon wit hin degraded ecosystems. The results showed that: With the increase of enclosing years, the density of soil organic carbon grows increasingly，while the highest value of plant organic carbon density oc-curs in the 20 years of enclosing, and the plant carbon intensity of enclosing for 25 years is slightly lower than that of enclosing for 20 years，show ing a low ering trend. Carbon density of processed ecosystem of enclosing for 25 years reaches the highest, 8.22 kg/m²; the proportion of carbon pool in soil in the total reserves of organic carbon pool in ecosystem is little influenced by the enclosing years.