文献类型：期刊文献

英文题名：Biodiversity increased both productivity and its spatial stability in temperate forests in northeastern China

作者：Gao, Wen-Qiang[1] Lei, Xiang-Dong[1] Liang, Mao-Wei[2] Larjavaara, Markku[2] Li, Yu-Tang[3] Gao, Dong-Li[1,4] Zhang, Hui-Ru[1]

第一作者：高文强

通信作者：Lei, XD[1]

机构：[1]Chinese Acad Forestry, Inst Forest Resource Informat Tech, Key Lab Forest Management & Growth Modelling, State Forestry & Grassland Adm, Beijing, Peoples R China;[2]Peking Univ, Coll Urban & Environm Sci, Inst Ecol, Key Lab Earth Surface Proc,Minist Educ, Beijing, Peoples R China;[3]Jilin Forestry Inventory & Planning Inst, Changchun, Peoples R China;[4]State Forestry & Grassland Adm, Planning & Design Inst Forest Prod Ind, Beijing 100013, Peoples R China

年份：2021

卷号：780

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20211310155525);Scopus(收录号：2-s2.0-85103242530);WOS:【SCI-EXPANDED(收录号:WOS:000653088000004)】；

基金：This work was supported by the Fundamental Research Fund for the Central Non-Profit Research Institute of CAF [CAFYBB2018SY022], National Key Research and Development Program of China [2017YFC0504101] and Forestry Public Welfare Scientific Research Project [201504303]. There are no conflicts of interest to declare.

语种：英文

外文关键词：Ecosystem functioning; Aboveground wood productivity; Species richness; Structural diversity; Spatial variability; Productivity gradients

摘要：Although the relationship between biodiversity and ecosystem functioning has been extensively studied, it remains unclear if the relationships of biodiversity with productivity and its spatial stability vary along productivity gradients in natural ecosystems. Based on a large dataset from 2324 permanent forest inventory plots across northeastern China, we examined the intensity of species richness (SR) and tree size diversity (Hd) effects on aboveground wood productivity (AWP) and its spatial stability among different productivity levels. Structural equation modeling was applied, integrating abiotic (climate and soil) and biotic (stand density) factors. Our results demonstrated that both SR and Hd positively affected AWP and its spatial stability, and the intensity of these positive effects decreased with increasing productivity. At low productivity levels, SR and Hd increased spatial stability by reducing spatial variability and increasing mean AWP. At high productivity levels, stability increased only through mean AWP increase. Moreover, temperature and stand density affected the AWP directly and indirectly via biodiversity, and the strength and direction of these effects varied among different productivity levels. We concluded that biodiversity could simultaneously enhance productivity and its spatial stability in temperate forests, and that the effect intensity was uniform along productivity gradients, which provided a new perspective on relationships within biodiversity & minus;ecosystem functioning. (c) 2021 Elsevier B.V. All rights reserved.