RCEES OpenIR  > 城市与区域生态国家重点实验室
Restoration of ecosystem carbon and nitrogen storage and microbial biomass after grazing exclusion in semi-arid grasslands of Inner Mongolia
Wu, Xing; Li, Zongshan; Fu, Bojie; Zhou, Wangming; Liu, Huifeng; Liu, Guohua
2014
Source PublicationECOLOGICAL ENGINEERING
ISSN0925-8574
Volume73Issue:1Pages:395-403
AbstractThe semi-arid grasslands in Inner Mongolia have been degraded as a result of long-term grazing and poor grassland management. A series of ecological restoration strategies have been implemented to enhance the ecosystem services of China's grasslands. To understand the response of ecosystem C and N to grazing exclusion within a nationwide conservation project-Returning Grazing Lands to Grasslands (RGLG), the C and N storages in different parts of the plant-soil system as well as soil microbial biomass carbon (MBC) and nitrogen (MBN) contents were determined and compared between three grazing exclusion sites (6 years) and the paired adjacent grazing sites in the Hulunbuir grassland of Inner Mongolia. Our results showed that the exclusion of grazing for 6 years resulted in significant increases of ecosystem biomass and soil C and N contents, leading to a substantial restoration of ecosystem C and N storage. The average C and N accumulation rates in the whole ecosystem were 173.6 g C m(-2) year(-1) and 19.8 g N m(-2) year(-1), respectively. The accumulation of C and N in soil contributed to more than 87.6% and 98.2% of the increases in ecosystem C and N, respectively, indicating that the restoration of ecosystem C and N were mainly due to the increase of C and N in soil after exclusion of grazing. The higher MBC and MBN in exclosure sites than grazing sites might be partly because of the enhanced organic matter inputs from plant litter and root exudates. The significant correlations between soil organic matter and microbial biomass suggested that soil microbial biomass could be a sensitive indicator of the soil C and N dynamics. These results indicated that exclusion of grazing pressure within the RGLG project is an effective restoration approach to control grassland degradation in this region. However, more comprehensive multidisciplinary studies are needed to evaluate the effectiveness of the RGLG project and to improve the management strategies for grassland restoration. (C) 2014 Elsevier B.V. All rights reserved.
Department城市与区域生态国家重点实验室
KeywordGrazing Exclusion Returning Grazing Lands To grassLands (Rglg) Project Carbon And Nitrogen Storage Soil Microbial Biomass Restoration Semi-arid Grassland
Citation statistics
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/9223
Collection城市与区域生态国家重点实验室
Recommended Citation
GB/T 7714
Wu, Xing,Li, Zongshan,Fu, Bojie,et al. Restoration of ecosystem carbon and nitrogen storage and microbial biomass after grazing exclusion in semi-arid grasslands of Inner Mongolia[J]. ECOLOGICAL ENGINEERING,2014,73(1):395-403.
APA Wu, Xing,Li, Zongshan,Fu, Bojie,Zhou, Wangming,Liu, Huifeng,&Liu, Guohua.(2014).Restoration of ecosystem carbon and nitrogen storage and microbial biomass after grazing exclusion in semi-arid grasslands of Inner Mongolia.ECOLOGICAL ENGINEERING,73(1),395-403.
MLA Wu, Xing,et al."Restoration of ecosystem carbon and nitrogen storage and microbial biomass after grazing exclusion in semi-arid grasslands of Inner Mongolia".ECOLOGICAL ENGINEERING 73.1(2014):395-403.
Files in This Item: Download All
File Name/Size DocType Version Access License
Restoration of ecosy(695KB) 开放获取--View Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, Xing]'s Articles
[Li, Zongshan]'s Articles
[Fu, Bojie]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Xing]'s Articles
[Li, Zongshan]'s Articles
[Fu, Bojie]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Xing]'s Articles
[Li, Zongshan]'s Articles
[Fu, Bojie]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Restoration of ecosystem carbon and nitrogen storage and microbial biomass after grazing exclusion in semi-arid grasslands of Inner Mongolia.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

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