文献类型：期刊文献

中文题名：浑善达克沙地植物群落物种多样性及环境解释

英文题名：Biodiversity of plant communities and its environmental interpretation in the Otindag Sandy Land,China

作者：齐丹卉[1,4] 杨洪晓[5] 卢琦[1,2] 褚建民[3] 袁祺[3] 甘红豪[3] 赵帅[3] 陈加伟[3] 徐晓庆[3]

第一作者：齐丹卉

机构：[1]中国林业科学研究院,荒漠化研究所,北京100091;[2]中国林业科学研究院,沙漠林业实验中心,北京100091;[3]中国林业科学研究院,林业研究所,北京100091;[4]西南林业大学生态与环境学院,云南昆明650224;[5]青岛农业大学资源与环境学院,山东青岛266109

年份：2021

卷号：41

期号：6

起止页码：65-77

中文期刊名：中国沙漠

外文期刊名：Journal of Desert Research

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：科技部科技基础资源调查专项(2017FY100205);中国林业科学研究院基本科研业务费专项(CAFYBB2020ZB001)。

语种：中文

中文关键词：植物多样性;环境因子;CCA;浑善达克沙地

外文关键词：plant diversity;environmental factor;CCA;Otindag Sandy Land

分类号：Q145

摘要：认识沙地植物群落物种多样性及其与环境的关系,对维护沙地生态系统的结构与功能具有重要意义。本研究基于浑善达克沙地83个样地的群落数据及环境数据,通过数量生态学方法对群落物种多样性及其影响因子进行分析,探讨浑善达克沙地物种多样性特征及其环境解释。结果表明:(1)主要群落有榆树(Ulmus pumila)群落、小叶锦鸡儿(Caragana microphylla)群落、黄柳(Salix gordejevii)群落及长梗扁桃(Prunus pedunculata)群落等,其中榆树群落分布在降水和土壤养分都比较高的区域,小叶锦鸡儿群落适生生境为降水较少且土壤贫瘠的区域;影响该区群落分布的主要环境因子依次为生长季降水量、生长季温度、土壤全氮和全钾含量,降水量的差异显著影响群落分布格局。(2)浑善达克沙地植物多样性的分布呈现出一定的规律性变化。物种多样性指数均随经度和海拔的增加而增加;Patrick指数与Shannon-wiener指数随纬度的增加呈现减少的趋势;Simpson指数与Pielou指数随纬度增加而增加;Patrick指数、Simpson指数和Shannon-wiener指数与生长季降水量、土壤有机碳和有效氮含量呈显著正相关,与生长季均温、≥0℃积温、生长季风速呈显著负相关,所有环境变量与Pielou指数均无显著相关性。研究结果阐明了浑善达克沙地物种多样性及植物群落分布的规律以及与关键环境因子之间的关系,有利于提高沙地植物多样性和稳定性,增强沙地植被的生态功能。
It is important to study the characteristics of species diversity and the relationship between species diversity and environment in sandy land communities to maintain the structure and function of sandy land ecosystem.Based on the community and environmental data of 83 plots in the Otindag Sandy Land,this study analyzed the community species diversity and its influencing factors by quantitative ecology method,and explored the characteristics of species diversity and its environmental explanations in the Otindag Sandy Land.The results showed that:(1)The main communities are Form.Ulmus pumila,Form.Caragana microphylla,Form.Salix gordejevii and Form.Prunus pedunculata.The main environmental factors affecting the community distribution in this area are precipitation in the growing season,temperature,soil total nitrogen and total potassium content.The difference of precipitation significantly affectes the distribution pattern of the community.(2)The distribution of plant diversity in the Otindag Sandy Land shows regular changes.The diversity indices increases with the increase of longitude and altitude,Patrick index and Shannon-wiener index decreases with the increase of latitude,Simpson index and Pielou index increases with the increase of latitude.Patrick index,Simpson index and Shannon-wiener index are significantly positively correlated with precipitation in the growing season,soil organic carbon and available nitrogen contents,and negatively correlated with mean temperature,accumulated temperature above 0℃and wind speed in the growing season.None of the environmental variables is significantly correlated with Pielou index.The results of this study elucidate the rules of species diversity and plant community distribution in the Otindag Sandy Land,as well as their relationships with key environmental factors,which are beneficial to improve the diversity and stability of plants in the sandy land and enhance the ecological function of vegetation in the sandy land.