生态与农村环境学报2013，Vol.29Issue(1)：43-48,6.
岷江上游干旱河谷荒坡植物群落的稳定性分析
Stability of Plant Communities on Waste Hillsides of Dry Valleys in the Upper Reaches of Minjiang River.
摘要
Abstract
A total of 10 sample lots were selected on waste hillsides of dry valleys typical of the upper reaches of Minjiang River for study on stability of the plant communities on these hillsides by using indices, such as Whittakerβ-diversity, overall interspecific association, niche width, niche overlap, and cross points between the species proposition lines and accumulation relative frequency lines. Results show that the altitudinal gradient in β-diversity of the plant communities is very low, indicating that the species succession rate is low; and that the overall interspecific association within the plant communities is significantly positive, indicating that the plant communities are in the steady growth phase; and that Selagi-nella pulvinata, Allium sikkimense and Carex lanceolat, the three dominant species, relatively higher in niche width, form co-dominant communities. At the same time, interspecific niche overlaps are widely found. The cross point between the species proposition line and accumulation relative frequency line is 11.13/80.关键词
植物群落/稳定性/荒坡/岷江干旱河谷Key words
plant community/ stability/ waste hillside/ dry valley of Minjiang River分类
农业科技引用本文复制引用
杨子松,杨灿,黎云祥..岷江上游干旱河谷荒坡植物群落的稳定性分析[J].生态与农村环境学报,2013,29(1):43-48,6.基金项目
四川省教育厅自然科学重点项目(11ZA179) （11ZA179）
阿坝师范高等专科学校重点项目(ASA12-21) （ASA12-21）
西南野生动植物资源保护省部共建教育部重点实验室2010年度开放基金(XNYB01-1) （XNYB01-1）
