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青海湖区针茅草原生物量的动态变化 被引量:17

Dynamic changes of the biomass of Stipa steppe around Qinghai Lake
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摘要 探讨了围栏后青海湖区针茅Stupa草原群落生物量季节动态变化.通过多元回归分析,围栏内外群落地上生物量的季节变化基本上呈Logistic曲线变化,与土壤水分相关性显著,并且围栏内地上生物量高于围栏外地上生物量;地下生物量呈典型的倒金字塔形,空间分布十分不均匀,多集中在地下0~20 cm,围栏内群落地下生物量同样高于围栏外地下生物量. Seasonal dynamic changes of the Stipa steppe community biomass after exclosure were studied in the paper. The results showed that the above-ground biomass cohered to a Logistic curve both inside and outside the exclosure, and had a remarkable relevance to soil water. The above-ground biomass inside exclosure is much higher than that of the outside exclosure. The under-ground biomass formed a typical reversed pyramid, special distribution was uneven, mainly concentrated in 0~20 cm under ground. The under ground biomass inside exclosure was also higher than that of the outside.
作者 孙菁 彭敏 陈桂琛 李伟 王顺忠 周国英 SUN Jing~(1,2), PENG Min~1, CHEN Gui-chen~1, LI Wei~3, WANG Shun-zhong~1, ZHOU Guo-ying~1 (1.North-west Institute of Plateau Biology, CAS, Xining 810001,China; 2. College of Postgraduates, CAS, Beijing 100039,China; 3. Breeding Sheep Farm of Sanjiaocheng, Gangcha 812300,China)
出处 《草业科学》 CAS CSCD 2004年第7期 1-5,共5页 Pratacultural Science
基金 国家中西部专项基金,国家重点基础研究发展计划(973计划),中国科学院知识创新工程项目
关键词 青海湖区 针茅草原 生物量 动态变化 Qinghai Lake Stipa steppe biomass dynamic changes
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