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Understory Vegetation Preservation Offsets the Decline in Soil Organic Carbon Stock Caused by Aboveground Litter Removal in a Subtropical Chinese Fir Plantation

文献类型：期刊论文

作者Xu, Bingshi4,5; Wang, Fangchao1,5; Liang, Kuan1; Liu, Ren1; Hu, Xiaofei3; Wang, Huimin2; Chen, Fusheng1,5; Yu, Mingquan4
刊名FORESTS
出版日期2024-12-01
卷号15期号:12页码:17
关键词Chinese fir understory management soil carbon fractions microbial community enzyme activity soil nutrients soil profile
DOI10.3390/f15122204
产权排序5
英文摘要Forest soils play a key role in the global carbon (C) pool and in mitigating climate change. The mechanisms by which understory and litter management affect soil organic C (SOC) concentrations are unclear in subtropical forests. We collected soils along a 60 cm profile in a Chinese fir (Cunninghamia lanceolata) plantation treated by only aboveground litter removal and understory vegetation preservation (Only-ALR), both aboveground litter and understory vegetation removal (ALR+UVR), and both aboveground litter and understory vegetation preservation (control) for 7 consecutive years. Five SOC fractions, physico-chemical properties, the biomass of microbial communities and the activities of C-acquiring enzymes were measured, and their correlations were analyzed for each of four soil layers (0-10, 10-20, 20-40 and 40-60 cm). Compared with control, Only-ALR decreased labile C pool I (LP-C I), labile C pool II (LP-C II) and dissolved organic C (DOC) in topsoil (0-20 cm) but had no effect on soil C fractions in subsoil (20-60 cm). A higher fungi and bacteria biomass in LP-C II and microbial biomass C (MBC) stock was observed in Only-ALR compared to ALR+UVR treatment. Soil pH and Gram-positive bacteria generally had impact on the variation of soil C fractions in topsoil and subsoil, respectively. Understory vegetation preservation offsets the declines of SOC and recalcitrant C but not the decreases in labile C caused by aboveground litter removal. Understory vegetation helps sustain SOC stock mainly via decreased C input and elevated soil pH which would change microbial biomass and activities when litter is removed. Our findings highlight the potential influence of long-term understory manipulation practices on C pool within a soil profile in subtropical plantation forests.
WOS关键词MICROBIAL BIOMASS ; NITROGEN ; MATTER ; FOREST ; MANAGEMENT ; FRACTIONS ; PH ; SEQUESTRATION ; CLIMATE ; FERTILIZATION
资助项目National Natural Science Foundation of China ; Double Thousand Plan of Jiangxi Province[jxsq2023201058] ; [31930070] ; [32171759] ; [32201533]
WOS研究方向Forestry
语种英语
WOS记录号WOS:001384362300001
出版者MDPI
资助机构National Natural Science Foundation of China ; Double Thousand Plan of Jiangxi Province
源URL[http://ir.igsnrr.ac.cn/handle/311030/211924]  
专题千烟洲站森林生态系统研究中心_外文论文
通讯作者Wang, Fangchao; Yu, Mingquan
作者单位1.Jiangxi Agr Univ, Coll Forestry, Jiangxi Prov Key Lab Subtrop Forest Resources Cult, Nanchang 330045, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Stn, Beijing 100101, Peoples R China
3.Nanchang Univ, Sch Publ Policy & Management, Nanchang 330038, Peoples R China
4.Jiangxi Sci & Technol Normal Univ, Coll Life Sci, Nanchang 330013, Peoples R China
5.Jiangxi Agr Univ, Key Lab Forest Ecosyst Protect & Restorat Poyang L, Nanchang 330045, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Bingshi,Wang, Fangchao,Liang, Kuan,et al. Understory Vegetation Preservation Offsets the Decline in Soil Organic Carbon Stock Caused by Aboveground Litter Removal in a Subtropical Chinese Fir Plantation[J]. FORESTS,2024,15(12):17.
APA Xu, Bingshi.,Wang, Fangchao.,Liang, Kuan.,Liu, Ren.,Hu, Xiaofei.,...&Yu, Mingquan.(2024).Understory Vegetation Preservation Offsets the Decline in Soil Organic Carbon Stock Caused by Aboveground Litter Removal in a Subtropical Chinese Fir Plantation.FORESTS,15(12),17.
MLA Xu, Bingshi,et al."Understory Vegetation Preservation Offsets the Decline in Soil Organic Carbon Stock Caused by Aboveground Litter Removal in a Subtropical Chinese Fir Plantation".FORESTS 15.12(2024):17.

入库方式： OAI收割

来源：地理科学与资源研究所

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