%0 Journal Article
%T Response of plant diversity and productivity to soil resources changing under grazing disturbance on an alpine meadow<br>放牧扰动下高寒草甸植物多样性、生产力对土壤养分条件变化的响应
%A WANG Chang-Ting
%A LONG Rui-Jun
%A WANG Qi-Lan
%A CAO Guang-Min
%A SHI Jian-Jun
%A DU Yan-Gong
%A <br>王长庭
%A 龙瑞军
%A 王启兰
%A 曹广民
%A 施建军
%A 杜岩功
%J 生态学报
%D 2008
%I 
%X The methods of field survey and experiment analysis was applied to detect the influence of plant diversity and productivity to soil resources changing under grazing disturbance on an alpine meadow. The purpose of this study to provide the process of degrading mechanisms in alpine meadow. The experiment plots were located in the Haibei alpine meadow ecosystem research station. The results showed that the obvious change of rhizomes in the Kobresia pygmaea meadow community, soil contents which cultivate rhizomes, and the proportion of the rhizome to the soil, the change of plant community structure and function, the change of soil physics and chemistry characteristics under grazing disturbance. With the grazing intensity increasing, especially the proportion of the rhizome to the soil at 0-10 cm soil layer were enhanced; The most rhizomes were died because of soil resources supply ability decreasing, soil organic matters which return in soil were decreased, sustainable utilization vegetation, converse succession (or degenerate succession) occurred in grassland, reflection by species number reducing, plant diversity decreasing, energy distribution turn around below-ground biomass; the alteration of soil properties (for example soil bulk density, soil moisture) resulted in change of vegetation composition and plant diversity. The soil environment and nutrients were influenced by grazing to change the grassland community biomasses (above, below-ground biomass); moderation disturbance to the soil surface and moderation destruction to original plant provide a small habitat for new plant species, new plant species intrude plant community, to increase plant richness. However, when strong disturbance occurred in grassland community, the dominance status of the main plant species in grassland community was substituted by another plant species.
%K grazing disturbance
%K plant diversity
%K productivity
%K soil resources
%K plant community succession
%K response<br>放牧扰动
%K 植物多样性
%K 生产力
%K 土壤养分
%K 群落演替
%K 响应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=0D2A859CCE0E681B9C6B2E42763BF009&yid=67289AFF6305E306&vid=D3E34374A0D77D7F&iid=9CF7A0430CBB2DFD&sid=B11EBD6C27385304&eid=37FACE2C5BB999D7&journal_id=1000-0933&journal_name=生态学报&referenced_num=4&reference_num=31