草业科学2025，Vol.42Issue(9)：2204-2211,8.DOI:10.11829/j.issn.1001-0629.2024-0398
西藏阿里地区变色锦鸡儿灌丛地上群落特征
Aboveground characteristics of Caragana versicolor plant communities in Ngari prefecture in Xizang
摘要
Abstract
Caragana versicolor is a representative shrub species in western Xizang.In late July and early August 2022,we selected nine survey sites in Pulan,Zhada,Gaer,and Geji County,and investigated the aboveground characteristics of 13 shrub communities(10 m × 10 m)and 36 herbaceous layer communities(1 m × 1 m)using sampling techniques.The results showed that:1)the C.versicolor shrubs in this region are small and low-growing,71.4％of the 722 surveyed shrubs having a canopy area of less than 0.3 m2 and 90.9％of the shrubs being shorter than 20 cm;2)Potentilla bifurca and Stipa purpurea were common species in the herbaceous layer of the shrub communities,with occurrence frequencies of 58.3％and 50.0％,respectively;3)regression analysis revealed that as the number of shrubs increased,the canopy area and height significantly decreased;the canopy area was significantly positively correlated with the average height of the herbaceous layer,but significantly negatively correlated with species richness.This study revealed the aboveground community characteristics of C.versicolor shrubs,providing baseline data support for assessing the impacts of future climate change and grazing on their structure and function.关键词
变色锦鸡儿/高寒灌丛草原/群落特征/物种相互作用Key words
Caragana versicolor/alpine shrubby grassland/community characteristic/species interaction引用本文复制引用
赵磊磊,刘云霞,牛海山,汪诗平,李博文,吕静雅,庞哲,吕汪汪,孙建平,周阳,陈兰英,贾跃凤..西藏阿里地区变色锦鸡儿灌丛地上群落特征[J].草业科学,2025,42(9):2204-2211,8.基金项目
阿里科学与技术局"区域科技协同创新项目"(QYXTZX-AL2022-05) （QYXTZX-AL2022-05）
拉萨市科学和技术局重点项目(2023000097) （2023000097）
四川省自然科学基金青年项目(2023NSFSC1282) （2023NSFSC1282）
