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Restoration effects of fertilization and grazing exclusion on different degraded alpine grasslands: Evidence from a 10-year experiment
Zong, Ning1; Shi, Peili1,2; Zheng, Lili1,2; Zhou, Tiancai1,2; Cong, Nan1; Hou, Ge1,2; Song, Minghua1; Tian, Jing1,3; Zhang, Xianzhou1; Zhu, Juntao1
2021-11-01
Source PublicationECOLOGICAL ENGINEERING
ISSN0925-8574
Volume170Pages:12
Corresponding AuthorZong, Ning(zongning@igsnrr.ac.cn) ; Zhu, Juntao(zhujt@igsnrr.ac.cn)
AbstractUnderstanding 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.
KeywordDegraded alpine grasslands Grazing exclusion Nitrogen and phosphorus addition Plant community structure Recovery effect
DOI10.1016/j.ecoleng.2021.106361
WOS KeywordQINGHAI-TIBETAN PLATEAU ; NITROGEN CRITICAL LOADS ; PLANT DIVERSITY ; MICROBIAL BIOMASS ; SOIL PROPERTIES ; NUTRIENT AVAILABILITY ; PHOSPHORUS LIMITATION ; ECOSYSTEM RESPIRATION ; COMMUNITY STRUCTURE ; NORTHERN TIBET
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaEnvironmental Sciences & Ecology ; Engineering
WOS SubjectEcology ; Engineering, Environmental ; Environmental Sciences
WOS IDWOS:000687624200006
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/165069
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZong, Ning; Zhu, Juntao
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.China Agr Univ, Coll Resources & Environm Sci, Key Lab Plant Soil Interact, Minist Educ, Beijing 100193, Peoples R China
Recommended Citation
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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