文献类型：期刊文献

英文题名：Drought effects on litter fraction and recovery in a subtropical forest

作者：Zhu, Xiuwen[1] Fu, Zhigao[2] Gong, Hede[3] Kuzyakov, Yakov[4,5,6] Lu, Zhiyun[7] Zhang, Jing[1] Zhu, Xuemei[9] Hong, Sisi[10] Song, Qinghai[1,8,11] Zhang, Yiping[1,8,11] Wen, Handong[1,8] Zhou, Wenjun[1,8,11]

第一作者：Zhu, Xiuwen

通信作者：Wen, HD[1];Zhou, WJ[1];Wen, HD[2];Zhou, WJ[2];Zhou, WJ[3]

机构：[1]Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Menglun, Peoples R China;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou, Peoples R China;[3]Southwest Forest Univ, Sch Geog & Ecotourism, Kunming, Peoples R China;[4]Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, D-37077 Gottingen, Germany;[5]Peoples Friendship Univ Russia RUDN Univ, Moscow 117198, Russia;[6]Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia;[7]Natl Field Sci Observat & Res Stn Forest Ecosyst A, Puer, Yunnan, Peoples R China;[8]Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Xishuangbanna 666303, Peoples R China;[9]Donghua Univ, Coll Foreign Languages, Shanghai, Peoples R China;[10]Forestry & Grassland Bur Hekou Yao Autonomous Cty, Hekou, Yunnan, Peoples R China;[11]Univ Chinese Acad Sci, Beijing 100049, Peoples R China

年份：2024

卷号：166

外文期刊名：ECOLOGICAL INDICATORS

收录：;EI(收录号：20243416912715);Scopus(收录号：2-s2.0-85201444174);WOS:【SCI-EXPANDED(收录号:WOS:001298646700001)】；

基金：This work was supported by National Natural Science Foundation of China (42073080, 32361143516, 31870467, 31770528, 42165009) , the National Natural Science Foundation of China and Thailand Research Fund (NSFCTRF) (41961144017) , the Scientific ResearchFunding of Yunnan Provincial Department of Education (2020J0645) and Yunnan Provincial Department of Scientific and Technology (202205AC160045) China and Open Funding from CAS Key Laboratory of Tropical Forest Ecology. We also thank the postdoctoral project (2021) of Department of Human Resources and Social Security of Yunnan. We appreciate the staffs and technicians of the Ailaoshan Station for Subtropical Forest Ecosystem Studies (ASSTRES) and students of the Climate Change Research Group, XTBG, CAS, for helping with field work. We are especially grateful for Zayar Phyo, Gnanamoorthy's help with writing and analytical methods. We also thank Institutional Center for Shared Technologies and Facilities of XTBG, CAS for helping us with the litter analyses.r Funding of Yunnan Provincial Department of Education (2020J0645) and Yunnan Provincial Department of Scientific and Technology (202205AC160045) China and Open Funding from CAS Key Laboratory of Tropical Forest Ecology. We also thank the postdoctoral project (2021) of Department of Human Resources and Social Security of Yunnan. We appreciate the staffs and technicians of the Ailaoshan Sta-tion for Subtropical Forest Ecosystem Studies (ASSTRES) and students of the Climate Change Research Group, XTBG, CAS, for helping with field work. We are especially grateful for Zayar Phyo, Gnanamoorthy's help with writing and analytical methods. We also thank Institutional Center for Shared Technologies and Facilities of XTBG, CAS for helping us with the litter analyses.

语种：英文

外文关键词：Drought; Litter input; Precipitation; Temperature; Subtropical forests

摘要：Litter input is a critical link between the circulation and flows of energy and matter in forest ecosystems. Drought events impact litter inputs, affecting forest ecosystems' nutrient and energy cycles. To investigate the response of litter production to extreme drought, explore their recovery mechanism, and the difference between whole year, concurrent drought, non-drought period, rainy season, and dry season. We studied an extreme drought event in a subtropical evergreen broadleaved forest in the Ailao Mountain in 2009-2010. We used 10 years (2005-2014) of monthly litter production and climate data, including monthly average precipitation (MAP), soil water content (SWC), and monthly average temperature (MAT). The observation period was separated into pre-drought (2005-2008), during-drought (2009-2010), and post-drought (2011-2014) periods. We found that annual total litter production decreased by 12 % during the drought (p < 0.05), similar to that in the drought period. Leaf litter production increased by 1 % during drought time, and other fraction decreased obviously. The contribution of water environmental factors to litter production was more evident after drought events. MAT, MAP, and SWC jointly affect litter input under extreme drought conditions, and the dominant factor is related to litter fraction and drought periods. Water environmental factors (MAP & SWC) contributed to litter input after drought events, while MAT mainly affected litter input during the non-drought and rainy seasons. Due to the growth and nutritional strategies of each fraction, the recovery time is branch < leaf < flower & fruit < moss < bark. The results further reveal litter production response to drought events and the importance of water factors in recovery.