高原鼠兔对退化草地人工植被稳定性的影响  

Study on the effect of plateau pika on the stability of artificial grassland established on the degraded rangeland on Qinghai-Tibet Plateau

作　　者：潘多锋[1] 马玉寿[1] 张德罡[1] 施建军[2] 邱正强[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]青海省畜牧兽医科学院,青海西宁810016

出　　处：《草原与草坪》2006年第5期49-51,共3页Grassland and Turf

基　　金：国家"十.五"攻关项目(2001BA606A-02)

摘　　要：对高原鼠兔活动在“黑土型”退化草地上建植的人工草地上用堵洞法进行了调查研究,结果表明:当高原鼠兔的有效洞口密度达到60个/hm2时,人工草地优良牧草的地上植物量只有未危害草地的12%,牧草高度、盖度、密度均有大幅度下降;当达到80个/hm2时,优良牧草的地上植物量只有未危害草地的4%,牧草高度、盖度、密度进一步下降,人工草地开始向建植前的“黑土滩”演替。高原鼠兔通过对人工草地种群特征、物种多样性、土壤结构等方面的影响,来制约人工群落的稳定性与可持续发展。Study on the effect of plateau pika on the stability of artificial grassland established on degraded ＂black soil type＂degrade grassland on Qinghai-Tibet Plateau was carried out and the results showed that the aboveground phytomass of high quality grass of artificial grassland damaged by pika was only 12% of non-damaged grassland while the burrow density increased to 60 per hectare and the height, coverage and density significantly decreased. While it reached to 80 per hectare, the aboveground phytomass was only 4% of non-damaged grassland. Meanwhile, the artificial grassland began to success to ＂black soil type＂degraded grassland. By influencing the community structure, plant diversity and soil structure, the pika restrain artificial grassland stability and sustainable development.

关 键 词：高原鼠兔 退化草地 人工植被 

分 类 号：S812[农业科学—草业科学]