IGSNRR OpenIR
Nitrogen addition stimulated compensatory growth responses to clipping defoliation in a Northern Tibetan alpine meadow
Zong, Ning1; Shi, Peili1,2
2019
Source PublicationGRASSLAND SCIENCE
ISSN1744-6961
Volume65Issue:1Pages:60-68
Corresponding AuthorZong, Ning(zongning@igsnrr.ac.cn)
AbstractGrazing and clipping defoliation are the most important human disturbances in natural grasslands. Compensatory growth is a common response to clipping defoliation, which is of great significance for forage production and livestock husbandry development. However, how clipping intensity affects plant compensatory growth and how nitrogen (N) addition regulates this response in alpine ecosystems are still unclear. A manipulative experiment including two clipping intensities (light and heavy) crossed with N addition was conducted in an alpine meadow ecosystem to examine the effects of how N addition regulated plant compensatory growth induced by clipping defoliation. Selective clipping was used to simulate animal feeding, that is, only grasses and sedges were clipped. Under the N addition treatment, the relative growth rate of grasses and total biomass after clipping were significantly higher than those under the no N addition treatment. The total community biomass showed over-compensatory growth in light clipping under N addition treatment, while it showed equal-compensatory growth under the other treatments. The over-compensatory growth in light clipping under the N addition treatments mainly resulted from the stimulated growth of grasses. Regression analysis showed that the relative growth rate and biomass of grasses were positively correlated with soil inorganic N content, but increasing N availability was not conducive to the growth of sedges and other forbs. Divergent responses of different plant functional groups to clipping and N addition would lead to changes in community structure and functioning. Both community biomass and compensatory growth tended to increase first and then reach a stable state with the increase in soil N availability. Our results show that although light clipping could largely stimulate forage production under N addition, excessive clipping cannot lead to a continuous increase in compensatory growth of plant biomass, even under N addition conditions, in this semiarid alpine meadow ecosystem.
Keywordclipping defoliation compensatory growth nitrogen addition plant production relative growth rate
DOI10.1111/grs.12219
WOS KeywordBELOW-GROUND BIOMASS ; CRITICAL LOADS ; SOIL-NITROGEN ; PLANT-PRODUCTION ; ECOSYSTEM ; GRASSLAND ; BIODIVERSITY ; RESPIRATION ; VEGETATION ; STEPPE
Indexed BySCI
Language英语
Funding ProjectYouth Innovation Research Team Project[LENOM2016Q0004] ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China[41703079] ; National Key Research and Development Program[2016YFC0501803]
Funding OrganizationYouth Innovation Research Team Project ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Key Research and Development Program
WOS Research AreaAgriculture
WOS SubjectAgriculture, Multidisciplinary ; Agronomy
WOS IDWOS:000454610400007
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/51300
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, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zong, Ning,Shi, Peili. Nitrogen addition stimulated compensatory growth responses to clipping defoliation in a Northern Tibetan alpine meadow[J]. GRASSLAND SCIENCE,2019,65(1):60-68.
APA Zong, Ning,&Shi, Peili.(2019).Nitrogen addition stimulated compensatory growth responses to clipping defoliation in a Northern Tibetan alpine meadow.GRASSLAND SCIENCE,65(1),60-68.
MLA Zong, Ning,et al."Nitrogen addition stimulated compensatory growth responses to clipping defoliation in a Northern Tibetan alpine meadow".GRASSLAND SCIENCE 65.1(2019):60-68.
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.