img

官方微信

高级检索

中国沙漠 ›› 2021, Vol. 41 ›› Issue (6): 65-77.DOI: 10.7522/j.issn.1000-694X.2021.00080

• • 上一篇    下一篇

浑善达克沙地植物群落物种多样性及环境解释

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   

  1. 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
  • 收稿日期:2021-05-24 修回日期:2021-07-14 出版日期:2021-11-20 发布日期:2021-12-17
  • 通讯作者: 褚建民
  • 作者简介:褚建民,E-mail: cjmcaf@163.com
    齐丹卉(1979—),女,山东昌邑人,博士研究生,主要从事荒漠生态学研究。E-mail: 7942965@qq.com
  • 基金资助:
    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)

Biodiversity of plant communities and its environmental interpretation in the Otindag Sandy Land, China

Danhui Qi1,4(), Hongxiao Yang5, Qi Lu1,2, Jianmin Chu3(), Qi Yuan3, Honghao Gan3, Shuai Zhao3, Jiawei Chen3, Xiaoqing Xu3   

  1. 1.Institute of Desertification Studies /, Chinese Academy of Forestry,Beijing 100091,China
    2.Experimental Center of Desert Forestry /, Chinese Academy of Forestry,Beijing 100091,China
    3.Research Institute of Forestry, Chinese Academy of Forestry,Beijing 100091,China
    4.College of Ecology and Environment,Southwest Forestry University,Kunming 650224,China
    5.College of Resources and Environment,Qingdao Agricultural University,Qingdao 266109,Shandong,China
  • Received:2021-05-24 Revised:2021-07-14 Online:2021-11-20 Published:2021-12-17
  • Contact: Jianmin Chu

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(Salixgordejevii)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。

关键词: 植物多样性, 环境因子, CCA, 浑善达克沙地

Abstract:

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.

Key words: plant diversity, environmental factor, CCA, Otindag Sandy Land

中图分类号: