IGSNRR OpenIR
Enhanced Community Production rather than Structure Improvement under Nitrogen and Phosphorus Addition in Severely Degraded Alpine Meadows
Zong, Ning1; Shi, Peili1,2
2019-04-01
Source PublicationSUSTAINABILITY
ISSN2071-1050
Volume11Issue:7Pages:14
Corresponding AuthorZong, Ning(zongning@igsnrr.ac.cn)
AbstractFertilization is a common management measure for the restoration of degraded grasslands. In order to investigate whether fertilization can improve the severely degraded alpine meadows, we conducted a fertilization experiment on the Tibetan Plateau that began in 2008. The treatments were nitrogen (N) addition alone (50 kg N ha(-1) year(-1), LN; 100 kg N ha(-1) year(-1), HN) or combined with phosphorus (P) fertilizer [(50 kg N + 50 kg P) ha(-1) year(-1), LN+P; (100 kg N + 50 kg P) ha(-1) year(-1), HN + P] in a severely degraded alpine meadow. Eleven consecutive years of N and P fertilization did not significantly change plant species richness, while fertilization reduced the plant species diversity index, with the most significant reduction in HN and HN + P treatments. LN + P and HN + P treatments greatly increased community coverage and aboveground biomass, while N addition alone, especially the HN treatment, significantly reduced community coverage and aboveground biomass. Fertilization had no effect on edible pastures, while N and P fertilization significantly increased the biomass of forbs. The proportion of forbs to total aboveground biomass was more than 90%, and fertilization had no effect on this proportion. This shows that forbs still have an absolute advantage in the community. In addition, HN, LN + P, and HN + P treatments significantly reduced ecosystem stability. Community aboveground biomass was greatly enhanced in the N and P fertilization treatments, and this was beneficial for the ecosystem quality and soil hydrological functioning. However, fertilization treatments did not improve the community structure with either N addition alone or combined with P fertilizer, which was of little significance in providing forages for the sustainable development of livestock husbandry. To improve the structure of severely degraded alpine grasslands, it is necessary to combine other measures such as cutting the roots of forbs, fencing, or reseeding.
Keywordcommunity structure nitrogen and phosphorus fertilization plant production severely degraded alpine meadow ecosystem temporal stability Tibetan Plateau
DOI10.3390/su11072023
WOS KeywordQINGHAI-TIBETAN PLATEAU ; GRASSLAND ECOSYSTEM ; GRAZING EXCLUSION ; PLANT DIVERSITY ; NORTHERN TIBET ; CRITICAL LOADS ; CLIMATE-CHANGE ; SOIL-NITROGEN ; RESPONSES ; DEPOSITION
Indexed BySCI
Language英语
Funding ProjectNational Science Foundation of China[41703079] ; National Science Foundation of China[31870406] ; West Light Foundation of the Chinese Academy of Sciences ; National Key Research and Development Program[2016YFC0501803] ; National Key Research and Development Program[2017YFA0604802]
Funding OrganizationNational Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; National Key Research and Development Program
WOS Research AreaScience & Technology - Other Topics ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS IDWOS:000466551600200
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/59358
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZong, Ning
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Lhasa Natl Ecol Res Stn, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zong, Ning,Shi, Peili. Enhanced Community Production rather than Structure Improvement under Nitrogen and Phosphorus Addition in Severely Degraded Alpine Meadows[J]. SUSTAINABILITY,2019,11(7):14.
APA Zong, Ning,&Shi, Peili.(2019).Enhanced Community Production rather than Structure Improvement under Nitrogen and Phosphorus Addition in Severely Degraded Alpine Meadows.SUSTAINABILITY,11(7),14.
MLA Zong, Ning,et al."Enhanced Community Production rather than Structure Improvement under Nitrogen and Phosphorus Addition in Severely Degraded Alpine Meadows".SUSTAINABILITY 11.7(2019):14.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zong, Ning]'s Articles
[Shi, Peili]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zong, Ning]'s Articles
[Shi, Peili]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zong, Ning]'s Articles
[Shi, Peili]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.