自然资源学报 ›› 2019, Vol. 34 ›› Issue (11): 2415-2426.doi: 10.31497/zrzyxb.20191113

• 资源生态 • 上一篇    下一篇

山西历山山地草甸生物多样性、优势种和土壤因素对群落生产力的影响

赵峰侠1, 张瑞1, 徐明2,3, 郑云普4   

  1. 1. 山西师范大学地理科学学院,临汾 041004;
    2. 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室,北京 100101;
    3. 中国科学院大学,北京 100049;
    4. 河北工程大学水利水电学院,邯郸 056038
  • 收稿日期:2019-04-12 修回日期:2019-07-31 出版日期:2019-11-28 发布日期:2019-11-28
  • 通讯作者: 徐明(1965- ),男,河南平顶山人,博士,研究员,博士生导师,研究方向为植物生理生态、生物地球化学循环及气候变化生态学。E-mail: mingxu@igsnrr.ac.cn
  • 作者简介:赵峰侠(1980- ),女,陕西西安人,博士,讲师,硕士生导师,研究方向为生物多样性、植物功能性状与生态系统功能的关系。E-mail: zhaofx@sxnu.edu.cn
  • 基金资助:
    国家自然科学基金项目(41701287); 山西师范大学校级自然科学基金项目(02080163)

Effects of biodiversity, dominant species and soil factors on community productivity in Lishan Mountain meadow, Shanxi province

ZHAO Feng-xia1, ZHANG Rui1, XU Ming2,3, ZHENG Yun-pu4   

  1. 1. College of Geographical Sciences, Shanxi Normal University, Linfen 041004, Shanxi, China;
    2. Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. School of Water Conservancy and Hydropower, Hebei University of Engineering, Handan 056038, Hebei, China
  • Received:2019-04-12 Revised:2019-07-31 Online:2019-11-28 Published:2019-11-28

摘要: 自然生态系统生产力同生物多样性、优势种功能性状和土壤性质等多因素紧密关联,因此,受到多变量过程的综合调控。利用结构方程模型研究了山西历山山地草甸物种多样性、功能多样性、优势种功能性状和土壤等多变量因素对群落生产力的影响。结果表明:除了物种多样性外(γ=0.10,P=0.69),优势种功能性状(γ=0.61,P=0.00)、功能多样性(γ=0.47,P=0.04)和土壤因素(γ=0.34,P=0.02)直接影响群落生产力,并且土壤因素还通过改变优势种功能性状和功能多样性的方式间接影响群落生产力(间接影响系数分别为0.35、0.27)。优势种功能性状是预测群落生产力变化的最佳变量,其次是功能多样性和土壤因素。因此,理解自然生态系统生产力变化应在引入多元方法的前提下,重点考虑优势种功能性状因素。

关键词: 生物多样性, 功能多样性, 优势种功能性状, 土壤因素, 结构方程模型

Abstract: The productivity of natural ecosystem is closely related to many factors, such as biodiversity, functional traits of dominant species and soil property, thus is controlled by multi-variable process. In this paper, the effects of species diversity, functional diversity, functional traits of dominant species and soil factors on community productivity of Lishan Mountain meadow in Shanxi province were studied by using structural equation model. The results showed that species diversity had no effect on productivity (γ=0.10, P=0.69), but the functional traits of dominant species (γ=0.61, P=0.00), functional diversity (γ=0.47, P=0.04) and soil factors (γ=0.34, P=0.02) had a direct impact on productivity, and soil factors had an indirect effect on productivity by the functional traits of the dominant species and functional diversity, with the indirect effect coefficients being 0.35 and 0.27, respectively. The functional traits of dominant species were the best predictors of productivity, followed by functional diversity and soil factors. Therefore, understanding the change of natural ecosystem productivity should be based on the introduction of multiple methods, with emphasis on the functional traits of dominant species.

Key words: biodiversity, functional diversity, functional traits of dominant species, soil factors, structural equation model