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围封年限对草地生态系统碳分配的影响
引用本文:贾宏涛,蒋平安,赵成义,胡玉昆,李赟.围封年限对草地生态系统碳分配的影响[J].干旱地区农业研究,2009,27(1):33-36.
作者姓名:贾宏涛  蒋平安  赵成义  胡玉昆  李赟
作者单位:1. 新疆农业大学草业与环境科学学院,新疆,乌鲁木齐,830052
2. 中国科学院新疆生态地理研究所,新疆,乌鲁木齐,830011
基金项目:全球环境基金(GEF)项目,土壤学自治区重点学科资助项目,国家科技支撑计划,新疆维吾尔自治区教育厅高校科研计划项目 
摘    要:以处于不同围封年限的退化草地为研究对象,对退化生态系统内有机碳分配特征进行了研究.结果表明:随着围封年限的增长,土壤有机碳密度不断增加;而植物有机碳密度的最高值出现在围封20 a,围封25 a植物碳密度略低于围封20 a,有降低趋势.围封25 a处理生态系统碳密度最高,达到8.22 kg/m2;土壤碳库所占生态系统有机碳总储量的比例受封育年限的影响不大.

关 键 词:围封年限  草地生态系统  土壤有机碳  退化草地

The influence of enclosing life on carbon distribution of qrassland ecosystem
JIA Hongtao,JIANG Pingan,ZHAO Chengyi,HU Yukun,LI Yun.The influence of enclosing life on carbon distribution of qrassland ecosystem[J].Agricultural Research in the Arid Areas,2009,27(1):33-36.
Authors:JIA Hongtao  JIANG Pingan  ZHAO Chengyi  HU Yukun  LI Yun
Institution:1.College of Pratacultural and Environmental Sciences;Xingjian Agricultural University;Urumqi;Xinjiang 830052;China;2.Xinjiang Ecological Geography Research Institute of Chinese Academy of Sciences;Xinjiang 830011;China
Abstract:Aimed at the degraded grassland enclosed for different years,study was made on the distribution of organic carbon within 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 occurs 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,showing a lowering trend.Carbon density of processed...
Keywords:enclosing years  grassland ecosystem  soil organic carbon  degraded grassland  
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