文献类型：期刊文献

英文题名：Trade-offs between ligninase and cellulase and their effects on soil organic carbon in abandoned Moso bamboo forests in southeast China

作者：Xu, Yaowen[1] Zhou, Yan[2,3] Wang, Hui[4] Ge, Xiaogai[1] Gao, Ge[1] Cao, Yonghui[1] Li, Zhengcai[1] Zhou, Benzhi[1]

第一作者：Xu, Yaowen

通信作者：Zhou, BZ[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Natl Forestry & Grassland Adm China, Qianjiangyuan Forest Ecosyst Res Stn, Hangzhou 311400, Peoples R China;[3]Xinanjiang Forest Farm, Jiande 311600, Zhejiang, Peoples R China;[4]Thousand Isl Lake Forest Farm, Chunan 311700, Zhejiang, Peoples R China

年份：2023

卷号：905

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20233914812706);Scopus(收录号：2-s2.0-85172173792);WOS:【SCI-EXPANDED(收录号:WOS:001154852600001)】；

基金：This work was supported by the National Key Research and Development Program of China (grant number 2021YFD220040205) , and partially by the Leading Goose Program of Sci-Tech Department of Zhejiang Province (No. 2023C02035) , and Zhejiang Administration of Public Forests and State Forest Farms (GYLZ-202301) .r Development Program of China (grant number 2021YFD220040205) , and partially by the Leading Goose Program of Sci-Tech Department of Zhejiang Province (No. 2023C02035) , and Zhejiang Administration of Public Forests and State Forest Farms (GYLZ-202301) .

语种：英文

外文关键词：Carbon-degrading enzymes; Labile carbon; Recalcitrant carbon; Fraction; Abandonment

摘要：A vast expanse of Moso bamboo (Phyllostachys pubescens J.Houz.) forests in subtropical areas was once intensively managed but has been abandoned in recent years. However, the response of soil organic carbon (SOC) to abandonment management remains unclear, partly because how carbon-degrading enzymes vary with abandonment management and the role of this change in the soil carbon cycle are still poorly understood, which restricts the scientific evaluation of carbon sink benefits of these abandoned Moso bamboo forests. The results of the survey, based on 40 Moso bamboo forests, showed that compared with intensive management, abandonment management for 7-10 and 11-14 years exhibited a significant decrease in ligninase activities (a reduction of 12.14 % and 44.41 %, respectively) and a significant increase in SOC content (an increase of 49.39 % and 52.64 %, respectively). However, abandonment management did not affect cellulase activities or easily oxidizable organic carbon content (p > 0.05), but significantl increased non -easily oxidizable organic carbon (p < 0.05). Furthermore, the total nitrogen (TN) content and pH value increased with prolonged abandonment, and these trade-offs between ligninase and cellulase were primarily driven by pH and TN. The ligninase-to-cellulase activities ratio is the most key factor affecting NEOC and SOC changes in abandoned Moso bamboo forests. Together, these findings demonstrate the response of carbon -degrading enzyme trade-offs to abandonment management and highlight the role of these trade-offs in controlling SOC accumulation. In addition, the different responses of different SOC fractions to abandonment management deserve attention in future studies.