生态科学2023，Vol.42Issue(6)：233-239,7.DOI:10.14108/j.cnki.1008-8873.2023.06.025
谢家店滑坡体植被演替进程中优势种生态位变化特征
Niche variation characteristics of dominant species in vegetation succession process of Xiejiadian landslide
摘要
Abstract
In 2009,2015 and 2021,we carried out a quadrat survey of plant communities in 9 plots of Xiejiadian landslide in Yinchanggou.Then,Shannon niche width formula and Pianka niche overlap formula were used to calculate the dynamic changes of niche width and niche overlap of dominant species in plant communiaty.The results showed that:(1)The niche width of the photophilous species decreased gradually,while the niche width of the shade tolerant species and the fertilizer-liking species increased gradually.(2)There was a significant linear positive correlation between the niche width of dominant species and the average value of their niche overlap.The species with larger niche width had better fitting effect,while the species with smaller niche width were more dispersed.(3)On the whole,the total niche width,average niche width and average niche overlap of each layer of the community were increasing continuously,while the average niche overlap of herb layer decreased in 2021 due to niche differentiation.The study revealed the characteristics and changes of plant community structure in the process of restoration of landslide in the past 13 years after the earthquake,and provided a reference for the related research of vegetation restoration and the development of soil and water conservation work after the earthquake.关键词
演替进程/生态位宽度/生态位重叠/滑坡体/银厂沟谢家店Key words
succession process/niche width/niche overlap/landslide mass/Xiejiadianzi in Yinchanggou分类
农业科技引用本文复制引用
陈曦,刘鲁光,朱兆棋,刘守江..谢家店滑坡体植被演替进程中优势种生态位变化特征[J].生态科学,2023,42(6):233-239,7.基金项目
国家自然科学基金(41807075) （41807075）
西华师范大学博士科研启动项目(19E066) （19E066）
西华师范大学一般培育项目(416627) （416627）
