格姆滩“黑土型”退化草地人工植被群落主要植物种群生态位研究  

Niche of Main Plant Population of Artificial Vegetation Community Planted in "Black Soil Type" Degraded Grassland in Gemutan

作　　者：王彦龙 马玉寿 施建军 董全民 

机构地区：[1]青海畜牧兽医科学院草原研究所,西宁810016

出　　处：《青海畜牧兽医杂志》2008年第2期10-12,共3页Chinese Qinghai Journal of Animal and Veterinary Sciences

基　　金：国家"十五"科技攻关计划重大项目(2001BA606A-02);2005年度青海三江源自然保护区生态保护和建设总体规划科研课题及应用推广项目(2005-SN-1);国家"十一五"科技支撑计划重大项目(2006BAC01A02)

摘　　要：通过对格姆滩"黑土型"退化草地人工植被群落主要植物种群生态位宽度和生态位重叠的研究。结果表明:在人工调控之下,人工播种的垂穗披碱草及入侵的优良乡土牧草冷地早熟禾、中华羊茅能充分利用群落资源,生态位较宽,相反,阔叶型杂类草生长受到了明显的抑制,生态位宽度较窄。生态位宽度较大的物种,对资源的利用能力较强,分布较广,因而与其它物种间的生态位重叠值也较大。有着相似利用资源能力的物种,生态位重叠值较大。Niche breadth and niche overlap of main plant population of artificial Vegetation Community planted in ＂black soil type＂degraded grassland in Gemutan was determined. The results Elymus nutance and intruding fine local grasses Festuca sinensis and showed that under artificial control, artificial sowing Poa crymophila were capable of making full use of community resources having a wider niche breadth, On the contrary, the growth of wide-lesf weeds have been restrained obviously, having a narrow niche breadth. The species with wider niche breadth had stronger capability of using resources, widely spread, and the niche overlaps between them and other species were larger. The species with similar using environmental resources capability have larger niche overlaps.

关 键 词：格姆滩 “黑土型”退化草地 人工植被 生态位宽度 生态位重叠 

分 类 号：S812.3[农业科学—草业科学]