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Restoration effects of fertilization and grazing exclusion on different degraded alpine grasslands: Evidence from a 10-year experiment

文献类型：期刊论文

作者Zong, Ning1; Shi, Peili1,3; Zheng, Lili1,3; Zhou, Tiancai1,3; Cong, Nan1; Hou, Ge1,3; Song, Minghua1; Tian, Jing1,2; Zhang, Xianzhou1; Zhu, Juntao1
刊名ECOLOGICAL ENGINEERING
出版日期2021-11-01
卷号170页码:12
ISSN号0925-8574
关键词Degraded alpine grasslands Grazing exclusion Nitrogen and phosphorus addition Plant community structure Recovery effect
DOI10.1016/j.ecoleng.2021.106361
通讯作者Zong, Ning(zongning@igsnrr.ac.cn) ; Zhu, Juntao(zhujt@igsnrr.ac.cn)
英文摘要Understanding the changes in vegetation parameters and soil nutrients in different stages of recovery is crucial for assessing and restoring degraded grasslands. Different degraded grasslands may respond differently to fertilization and grazing exclusion due to the change in species composition, while research in this aspect is still lacking. Two lightly (LD) and one heavily degraded (HD) plots were set up, with one LD plot under grazing exclusion (LDGE), aiming to investigate the effects of these management measures on forage restoration under different degraded alpine grasslands. Nitrogen (N) addition showed a tendency to reduce community cover and aboveground biomass in LD plot, but had no effect in LDGE and HD plots. N and phosphorus (P) combined additions (N + P additions) greatly enhanced the community cover and aboveground biomass, suggesting P addition can reverse the negative effects of N addition. In LDGE plot, all fertilization treatments enhanced the growth of palatable species, and only N + P additions increased it in LD plot, while fertilization did not improve palatable species in HD plot. Additionally, grazing exclusion promoted fertilization effects, and the effects of fertilization on palatable species were much more pronounced in LDGE plot than those in LD plot. The effects of nutritious enrichment were primarily controlled by soil pH change, while they were also regulated by the changes in soil nutrient availability in LD plot. These results suggest that grazing exclusion and fertilization (especially N + P additions) can additively enhance community production of the lightly degraded alpine grasslands, while the structure of heavily degraded alpine grasslands cannot be restored by nutrition enrichment due to the forbs-dominated structure although plant production was greatly enhanced, and other measures should be combined to restore the community structure in heavily degraded alpine grasslands.
WOS关键词QINGHAI-TIBETAN PLATEAU ; NITROGEN CRITICAL LOADS ; PLANT DIVERSITY ; MICROBIAL BIOMASS ; SOIL PROPERTIES ; NUTRIENT AVAILABILITY ; PHOSPHORUS LIMITATION ; ECOSYSTEM RESPIRATION ; COMMUNITY STRUCTURE ; NORTHERN TIBET
资助项目National Natural Science Foundation of China[42071066] ; National Natural Science Foundation of China[31870406] ; National Natural Science Foundation of China[41991234] ; National Natural Science Foundation of China[31770560] ; National Key Research & Development Program of China[2017YFA0604802] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20050102] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program[2019QZKK0302]
WOS研究方向Environmental Sciences & Ecology ; Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000687624200006
资助机构National Natural Science Foundation of China ; National Key Research & Development Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research (STEP) Program
源URL[http://ir.igsnrr.ac.cn/handle/311030/165068]  
专题中国科学院地理科学与资源研究所
通讯作者Zong, Ning; Zhu, Juntao
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China
2.China Agr Univ, Coll Resources & Environm Sci, Key Lab Plant Soil Interact, Minist Educ, Beijing 100193, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zong, Ning,Shi, Peili,Zheng, Lili,et al. Restoration effects of fertilization and grazing exclusion on different degraded alpine grasslands: Evidence from a 10-year experiment[J]. ECOLOGICAL ENGINEERING,2021,170:12.
APA Zong, Ning.,Shi, Peili.,Zheng, Lili.,Zhou, Tiancai.,Cong, Nan.,...&Zhu, Juntao.(2021).Restoration effects of fertilization and grazing exclusion on different degraded alpine grasslands: Evidence from a 10-year experiment.ECOLOGICAL ENGINEERING,170,12.
MLA Zong, Ning,et al."Restoration effects of fertilization and grazing exclusion on different degraded alpine grasslands: Evidence from a 10-year experiment".ECOLOGICAL ENGINEERING 170(2021):12.

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来源：地理科学与资源研究所

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