Статья

Effects of stand age, richness and density on productivity in subtropical forests in China

Shuai OuyangFaculty of Life Science and Technology Central South University of Forestry and Technology Changsha ChinaWenhua XiangFaculty of Life Science and Technology Central South University of Forestry and Technology Changsha ChinaXiangping WangCollege of Forestry Beijing Forestry University Beijing ChinaWenfa XiaoKey Laboratory of Forest Ecology and Environment State Forestry Administration Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry Beijing ChinaLiang ChenFaculty of Life Science and Technology Central South University of Forestry and Technology Changsha ChinaShenggong LiInstitute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing ChinaHan SunCollege of Forestry Beijing Forestry University Beijing ChinaXiangwen DengFaculty of Life Science and Technology Central South University of Forestry and Technology Changsha ChinaDavid I. ForresterSwiss Federal Institute of Forest, Snow and Landscape Research WSL Birmensdorf SwitzerlandLixiong ZengKey Laboratory of Forest Ecology and Environment State Forestry Administration Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry Beijing ChinaPifeng LeiFaculty of Life Science and Technology Central South University of Forestry and Technology Changsha ChinaXiangdong LeiInstitute of Forest Resource Information Techniques Chinese Academy of Sciences Beijing ChinaMengmeng GouChinese Research Academy of Environmental Science Beijing ChinaChanghui PengInstitute of Environment Sciences, Department of Biological Sciences University of Quebec at Montreal Montreal QC Canada

2019en

ABI

Аннотация

Abstract Forest productivity may be determined not only by biodiversity but also by environmental factors and stand structure attributes. However, the relative importance of these factors in determining productivity is still controversial for subtropical forests. Based on a large dataset from 600 permanent forest inventory plots across subtropical China, we examined the relationship between biodiversity and forest productivity and tested whether stand structural attributes (stand density in terms of trees per ha, age and tree size) and environmental factors (climate and site conditions) had larger effects on productivity. Furthermore, we quantified the relative importance of environmental factors, stand structure and diversity in determining forest productivity. Diversity, together with stand structure and site conditions, regulated the variability in forest productivity. The relationship between diversity and forest productivity did not vary along environmental gradients. Stand density and age were more important modulators of forest productivity than diversity. Synthesis . Diversity had significant and positive effects on productivity in species‐rich subtropical forests, but the effects of stand density and age were also important. Our work highlights that while biodiversity conservation is often important, the regulation of stand structure can be even more important to maintain high productivity in subtropical forests.

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Идентификаторы

DOI: 10.1111/1365-2745.13194

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