文献类型：期刊文献

英文题名：Plant Diversity Mitigates the Effects of Urbanization on Soil Organic Carbon Stocks

作者：Yang, Hongbing[1] Xiao, Wenfa[1] Xiao, Yihua[2] Kuang, Yuanwen[3] Zhang, Manyun[4] Fu, Zhigao[2] Tong, Fuchun[5] Li, Ming[2] Xu, Han[2]

第一作者：Yang, Hongbing

机构：[1] Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Beijing, 100091, China; [2] Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, 510520, China; [3] South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; [4] College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China; [5] College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230081994)

语种：英文

外文关键词：Biodegradation - Ecology - Enzyme activity - Forestry - Global warming - Organic carbon - Soils

摘要：Urbanization is increasing worldwide, which have considerable consequences on ecosystem functions such as soil carbon (C) sequestration, however, the underlying microbial mechanisms regulated by plant diversity of urbanization on forest soil organic C stocks (SOCs) is still unclear. In this study, plant diversity along an urban-suburban-rural gradient and its relationships with the activities of micro-enzymes and the SOCs were quantified. We found that urbanization significantly reduced SOCs in surface soils via changing temperature, soil C: P ratios, and the relative abundance of key enzymes for C sequestration and degradation. Plant diversity showed significant and positive effects on SOCs via affecting soil C: P ratios and microorganisms. The greater effects of plant diversity than those of urbanization on SOCs imply that plant diversity can mitigate the negative effects on soil C sequestration in the context of global warming, which provides a sound theoretical basis for effectively improving forest quality and ecological functions. ? 2023, The Authors. All rights reserved.