Effects of Grazing Exclusion on Biomass Growth and Species Diversity among Various Grassland Types of the Tibetan Plateau
Effects of Grazing Exclusion on Biomass Growth and Species Diversity among Various Grassland Types of the Tibetan Plateau
复制标题
禁牧对青藏高原各类型草地生物量增长和物种多样性的影响
DOI：
10.3390/su11061705
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发表时间：
2019-03
期刊：
影响因子：
3.9
通讯作者：
Huang Lin
中科院分区：
文献类型：
--
作者：
Wang Suizi;Fan Jiangwen;Li Yuzhe;Huang Lin
牲畜放牧是物种多样性和植物生长的重要决定因素。过度放牧是导致草地退化的最重要的干扰之一。虽然已经实施了许多恢复措施，但禁牧是恢复退化草地的最有效方法之一。研究了5年禁牧对温带草原（TS）、沼泽草甸（SM）、高寒草原（AS）和高寒草甸（AM）4种草地植物生长和物种多样性的影响。我们的研究结果表明，禁牧增加了植物的高度，覆盖度，生物量和物种多样性在所有四个草地。AM、TS和SW的地上生物量分别增加了180.8%、117.3%和105.9%，显著高于AS（10.1%）。禁牧对草地中适口性物种比例的影响最大，且禁牧对草地中适口性物种比例的增加显著高于其他草地类型。群落内物种多样性显著增加，SM（23.9%）和AM（20.8%）。结果表明，禁牧是恢复退化草地的有效措施，在高寒草甸中效果最好。该研究为草地管理策略提供了理论依据，对草地资源和牧区的可持续发展具有重要意义。
Livestock grazing is an important determinant of species diversity and plant growth. Overgrazing is identified as one of the most important disturbances resulting in grassland degradation. Although many restoration practices have been implemented, grazing exclusion is one of the most effective methods to restore degraded grasslands. We explored the impact of five years of grazing exclusion on plant growth and species diversity in four types of grasslands: temperate steppe (TS), swamp meadow (SM), alpine steppe (AS), and alpine meadow (AM). Our results showed that grazing exclusion increased plant height, coverage, biomass, and species diversity in all four grasslands. The aboveground biomass in AM (180.8%), TS (117.3%), and SW (105.9%) increased significantly more than AS (10.1%). Grazing exclusion in AM had the greatest effect on proportion of palatable species, and the increase in palatable species in AM was higher than that of the other grassland types significantly. Species diversity increased significantly within the enclosure in SM (23.9%) and AM (20.8%). Our results indicate that grazing exclusion is an effective management strategy to restore degraded grasslands and it works best in alpine meadow. This study contributes to the growing theoretical basis for grassland management strategies and has a significant effect on sustainable development for grassland resources and pastoral areas.
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DOI：
10.1073/pnas.0802421105
发表时间：
2008-08-26
影响因子：
11.1
作者：
Post, Eric;Pedersen, Christian
通讯作者：
Pedersen, Christian
影响因子：
4.7
作者：
Z. Shang;Y. S. Ma;R. Long;L. Ding
通讯作者：
Z. Shang;Y. S. Ma;R. Long;L. Ding
影响因子：
4.8
作者：
Fan, Jiangwen;Zhong, Huaping;Yue, Yanzhen
通讯作者：
Yue, Yanzhen
影响因子：
--
作者：
SHANNON, CE
通讯作者：
SHANNON, CE
影响因子：
3.8
作者：
Jintun Zhang;Yiru Dong
通讯作者：
Jintun Zhang;Yiru Dong