文献类型：期刊文献

英文题名：Loss of soil microbial residue carbon by converting a tropical forest to tea plantation

作者：Ma, Suhui[1] Zhu, Biao[1] Chen, Guoping[1] Ni, Xiaofeng[1] Zhou, Luhong[2] Su, Haojie[1] Cai, Qiong[1] Chen, Xiao[3] Zhu, Jiangling[1] Ji, Chengjun[1] Li, Yide[4] Fang, Jingyun[1]

第一作者：Ma, Suhui

通信作者：Zhu, B[1]

机构：[1]Peking Univ, Inst Ecol, Coll Urban & Environm Sci, Key Lab Earth Surface Proc,Minist Educ, Beijing 100871, Peoples R China;[2]Fujian Normal Univ, Sch Geog Sci, Fuzhou 350007, Peoples R China;[3]Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China;[4]Chinese Acad Forestry, Res Inst Trop Forestry, Jianfengling Natl Key Field Observat & Res Stn Fo, Guangzhou 510520, Peoples R China

年份：2022

卷号：818

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20214811252504);Scopus(收录号：2-s2.0-85120088483);WOS:【SCI-EXPANDED(收录号:WOS:000789647600011)】；

基金：This work was supported by the National Natural Science Foundation of China (31988102) and the National Key Research and Development Program of China (2017YFC0503906). We thank Mengying Zhong, Huiying Ye, Qingshui Yu, Junling Lu and Zeyuan Li for their helpful suggestions for data analyses and a friendly review of the manuscript. We also appreciate the constructive comments and insightful suggestions from three anonymous reviewers that significantly improved this manuscript. We declare no conflict of interest.

语种：英文

外文关键词：Tropical forest; Forest conversion; Microbial biomass; Microbial residues; Plantation; Secondary succession

摘要：Land-use change can lead to profound changes in the storage of soil organic carbon (SOC) in the tropics. Soil microbial residues make up the majority of persistent SOC pools, yet the impact of land-use change on microbial residue C accumulation in the tropics is not well understood. Here, we investigated how the conversion of tropical primary montane rainforest to secondary forest and the conversions of secondary forest to Prunus salicina plantation and tea plantation, influence the accumulation of soil microbial residue C (indicated by amino sugars). Our results showed that the secondary forest had a higher SOC than that of the primary forest (+63%), while they had no difference in microbial residue C concentration, indicating a relatively slow microbial-derived C accrual during secondary succession. Moreover, the P. salicina plantation and tea plantation had lower SOC than the secondary forest (-53% and -57%, respectively). A decrease in fungal biomass (-51%) resulted in less fungal and total residue C concentrations in the tea plantation than in the secondary forest (-38% and -35%, respectively), indicating microbial-derived C loss following the forest conversion. The change in microbial residue C depended on litter standing crop rather than soil nutrient and root biomass. Litter standing crop affected microbial residue C concentration by regulating fungal biomass and hydrolytic enzyme activities. Taken together, our results highlight that litter-microbe interactions drive microbial residue C accumulation following forest conversions in the tropics.