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Vegetation recovery alters soil N status in subtropical karst plateau area: Evidence from natural abundance delta N-15 and delta O-18

文献类型：期刊论文

作者Wang, Jing1; Wen, Xuefa1,2; Lyu, Sidan1; Zhang, Xinyu1,2; Li, Shenggong1,2; Guo, Qingjun1,2
刊名PLANT AND SOIL
出版日期2021-01-23
页码15
关键词Karst Ecological restoration Stable isotope Decomposition Ammonia volatilization Denitrification
ISSN号0032-079X
DOI10.1007/s11104-020-04797-6
通讯作者Wen, Xuefa(wenxf@igsnrr.ac.cn) ; Lyu, Sidan(lvsidan@igsnrr.ac.cn)
英文摘要Purpose Forest recovery from disturbance can alter soil nitrogen (N) status as a result of complex interactions in plant-soil system. The delta N-15 and delta O-18 are indicators that integrate complex soil N processes and can help elucidate changes in soil N status. Our objectives were to evaluate differences in soil N status among different forest recovery stages in karst plateau in southwestern China. Methods We established a forest recovery gradient with sites in cropland, abandoned cropland, shrub land, and early- and late-successional forests. We measured concentrations and isotopic compositions of soil total N, ammonium (NH4+), and nitrate (NO3-), and delta N-15 of plant tissue. Results With increased levels of recovery, concentrations of soil total N increased, and delta N-15 of soil total N (delta N-15(STN)) decreased at 0 similar to 10 cm depth. A positive relationship between delta N-15(STN) in surface soil and delta N-15 of plant (P < 0.05) suggested that recovery of plant biomass was the main contributor to soil N recovery. A large difference between delta N-15 of litter and delta N-15(STN) demonstrated an important dependence of plants on mycorrhizal fungi for N acquisition. delta N-15 of NH4+ was lower than delta N-15(STN), and a significant correlation between delta N-15 and delta O-18 of NO3- was observed only in late-successional forest (slope = l.4), indicating that gas N emission had a minor contribution to N loss. Ratio of ammonium N to nitrate N was < 1 (except in cropland), suggesting low risk of leaching. Conclusions Forest recovery promoted soil N recovery, and reduced soil N loss in karst plateau. However, N limitation persisted throughout forest recovery stages.
资助项目National Key Research and Development Program of China[2017YFC0503904] ; National Natural Science Foundation of China[41830860] ; National Natural Science Foundation of China[41571130043]
WOS研究方向Agriculture ; Plant Sciences
语种英语
WOS记录号WOS:000610479000007
出版者SPRINGER
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/136279]  
专题中国科学院地理科学与资源研究所
通讯作者Wen, Xuefa; Lyu, Sidan
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Jing,Wen, Xuefa,Lyu, Sidan,et al. Vegetation recovery alters soil N status in subtropical karst plateau area: Evidence from natural abundance delta N-15 and delta O-18[J]. PLANT AND SOIL,2021:15.
APA Wang, Jing,Wen, Xuefa,Lyu, Sidan,Zhang, Xinyu,Li, Shenggong,&Guo, Qingjun.(2021).Vegetation recovery alters soil N status in subtropical karst plateau area: Evidence from natural abundance delta N-15 and delta O-18.PLANT AND SOIL,15.
MLA Wang, Jing,et al."Vegetation recovery alters soil N status in subtropical karst plateau area: Evidence from natural abundance delta N-15 and delta O-18".PLANT AND SOIL (2021):15.

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来源：地理科学与资源研究所

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