新疆农业科学2017，Vol.54Issue(4)：756-765,10.DOI:10.6048/j.issn.1001-4330.2017.04.022
新疆巴音布鲁克高寒草原植被多样性退化演替分析
The Succession of Plant Biodiversity in Different Degraded of Bayinbluk Alpine Grasslands
摘要
Abstract
[Objective] Bayinbuluke alpine grassland was taken the research object to research the degradation succession of vegetation diversity in the hope of providing a theoretical basis for the scientific management of alpine grassland.[Method]By using the method of space to replace the time degradation gradient degradation successional sequence, the field investigation of plant communities during different alpine grassland degradation stages in Bayinbuluk was carried out.The variation of vegetation diversity was studied by using the index of α and β diversity.[Result]The results showed that Simpson index increased significantly by 9.6%-13.7% compared with non-degradation;and with the increasing degraded succession, Margalef index showed a slight increase and a significant decline trend, but the Shannon-Wiener index and Pielou index showed the fluctuation of upward then downward and upward change.In addition, with the worsening of grassland, the resource heterogeneity was decreased in the quadrat, but increased among quadrats, so the β diversity was increased.Cody index showed the tendency of "up-down", this result showed the species substitution rate increased first and then decreased.Bray-Curtis index was higher in light-degradation, mid-degradation and heavy-degradation grassland than non-degradation grassland, and it indicated that there were more common species among different degraded grasslands.[Conclusion]In the alpine grassland, species composition changed at different degradation succession stages, the forage grass with good palatability reduced, poisonous grass increased, resulting in reduction of the quality of grassland.关键词
高寒草原/退化演替/多样性Key words
alpine grassland/degraded succession/biodiversity分类
农业科技引用本文复制引用
董磊,安沙舟,董乙强,张爱宁,张蕊思,夏小伟,卡斯达尔·努尔旦别克..新疆巴音布鲁克高寒草原植被多样性退化演替分析[J].新疆农业科学,2017,54(4):756-765,10.基金项目
国家自然科学基金项目"巴音布鲁克高寒湿地CO2和CH4排放对水分变化的响应"(41305136)National Natural Science Foundation of China "Response to moisture change of CO2 and CH4 fluxe in Bayanbulak alpine wetland"(41305136) （41305136）
