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Forbs dominate plant nutrient resorption of plant community along a 34-year grazing exclusion gradient in a semiarid grassland

文献类型：期刊论文

作者Zhang, Yi1,3; Su, Jishuai3,4; Jing, Guanghua2; Cheng, Jimin1,3
刊名ECOLOGICAL ENGINEERING
出版日期2022-02-01
卷号175页码:9
ISSN号0925-8574
关键词Community composition Nitrogen phosphorus ratio Nutrient conservation Plant functional group Soil properties
DOI10.1016/j.ecoleng.2021.106497
通讯作者Su, Jishuai(sujishuai@ibcas.ac.cn) ; Cheng, Jimin(gyzcjm@ms.iswc.ac.cn)
英文摘要Grazing exclusion has been commonly used to restore degraded grasslands and has shown positive effects on plant community structure, productivity, and soil properties. Nutrient resorption affects key ecosystem processes such as nutrient uptake and carbon cycling, and plays a key role in plants' nutrient conservation in nutrient-poor environments. However, how plant nutrient resorption varying with grazing exclusion duration remains unclear. In this study, leaf nitrogen (N) and phosphorus (P) resorption efficiencies were examined at plant functional group and community levels in grasslands along a 34-year grazing exclusion gradient. Along the grazing exclusion gradient, N resorption efficiency (NRE) of plant community remained unchanged, while P resorption efficiency (PRE) increased, accompanied with increased community biomass, the proportion of grasses and soil fertility. Nutrient concentrations and resorption efficiencies, as well as their responses to grazing exclusion, varied among plant functional groups. Both NRE and PRE were higher in grasses than in sedges or forbs, while forbs had higher N and P concentrations in both green and senesced leaves. NRE and PRE of grasses and sedges changed little along the grazing exclusion gradient except the decreased NRE of grasses after 34 years of grazing exclusion, while both NRE and PRE of forbs increased with the duration of grazing exclusion. Variation in community nutrient resorption efficiencies was largely driven by forbs, and nutrient resorption efficiencies were negatively correlated with senesced leaf nutrient concentrations. Nutrient concentrations and resorption efficiencies of different plant functional groups and plant communities varied in their relationships with soil properties. Overall, our study highlights the importance of forbs in plant nutrient use pattern of grassland communities along the grazing exclusion gradient, and offer insights for grassland management to boost ecosystem nutrient cycling.
WOS关键词SOIL PROPERTIES ; LEAF NUTRIENTS ; LIFE-SPAN ; NITROGEN ; EFFICIENCY ; PATTERNS ; PROFICIENCY ; RESPONSES ; STEPPE ; LEAVES
资助项目National Key Research and Development Program of China[2016YFC0500700] ; Chinese Academy of Sciences Field Station Alliance Project[KFJ-SW-YW028-07] ; Natural Science Foundation of Shaanxi Province[2020JQ-971] ; Science and Technology Projects of Shaanxi Academy of Sciences[Y20Z606F13]
WOS研究方向Environmental Sciences & Ecology ; Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000728757700003
资助机构National Key Research and Development Program of China ; Chinese Academy of Sciences Field Station Alliance Project ; Natural Science Foundation of Shaanxi Province ; Science and Technology Projects of Shaanxi Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/168756]  
专题中国科学院地理科学与资源研究所
通讯作者Su, Jishuai; Cheng, Jimin
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Shaanxi Acad Sci, Inst Bot Shaanxi Prov, Key Lab Soil Resource & Biotech Applicat, Xian Bot Garden Shaanxi Prov, Xian 710061, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yi,Su, Jishuai,Jing, Guanghua,et al. Forbs dominate plant nutrient resorption of plant community along a 34-year grazing exclusion gradient in a semiarid grassland[J]. ECOLOGICAL ENGINEERING,2022,175:9.
APA Zhang, Yi,Su, Jishuai,Jing, Guanghua,&Cheng, Jimin.(2022).Forbs dominate plant nutrient resorption of plant community along a 34-year grazing exclusion gradient in a semiarid grassland.ECOLOGICAL ENGINEERING,175,9.
MLA Zhang, Yi,et al."Forbs dominate plant nutrient resorption of plant community along a 34-year grazing exclusion gradient in a semiarid grassland".ECOLOGICAL ENGINEERING 175(2022):9.

入库方式： OAI收割

来源：地理科学与资源研究所

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