物种丰富度
放牧
击剑
生物量(生态学)
非生物成分
生态学
生物
植物群落
农学
计算机科学
并行计算
作者
Wen Jin Li,Shuang Shuang Liu,Jin Hua Li,Ru Lan Zhang,Ka Zhuo Cai Rang,Hua Zhou,Bu Qing Yao,Jun Feng Wang
出处
期刊:Polish Journal of Ecology
[Museum and Institute of Zoology at the Polish Academy of Sciences]
日期:2019-06-21
卷期号:67 (1): 33-33
被引量:3
标识
DOI:10.3161/15052249pje2019.67.1.003
摘要
Using multiple classification approach to examine plant traits response to grazing and fencing (as without access to grazing) is rare. Here we used multiple classification approach to examine plant diversity, productivity and species traits response to grazing and fencing over a three-year period on the eastern part of the Qing-Hai Tibetan Plateau. The results showed that most common species response to the fence was poorly noticeable. The fencing meadows compared to those under long-term free grazing are characterized by significantly higher total species richness, but species richness declined with sampling years gradually, regardless of grazing or fencing. The correlation showed that species richness was negatively associated with mean annual temperature significantly, suggesting that abiotic factors (e.g. annual temperature) could also play important roles in driving species richness in this subalpine meadow. Total aboveground biomass was not associated with mean annual temperature and rainfall. The fencing meadow demonstrated higher community aboveground biomass relative to the grazing ones, especially the abundance of legume and graminoids increased, while the proportions of sedge decreased, suggested that grazing disturbance favours the increase of reproductive success of sedge (e.g. Kobresia humilis) in this subalpine meadow. Growth form-based analyses combined with canopy height categories should be recommended to reveal general rules and mechanisms relating to grazing.
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