IB-CAS  > 植被与环境变化国家重点实验室
Can more carbon be captured by grasslands? A case study of Inner Mongolia, China
Sha, Zongyao; Bai, Yongfei1; Lan, Hai2; Liu, Xuefeng3; Li, Ruren4; Xie, Yichun5
2020
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume723
AbstractGrasslands cover a large part of the Earth's surface and play an important role in the global carbon cycle. Previous studies have indicated that nearly half of the grassland vegetation cover has experienced degradation on a global scale; if this degradation is reversed, grasslands can act as potential carbon sinks. However, the question of how much more carbon (carbon gap) could be sequestrated by grassland vegetation by regulating human activities remains unanswered. Here, we present an innovative approach to assess the achievable carbon gap through focal analysis of long-term Moderate Resolution Imaging Spectroradiometer (MODIS) Net Primary Production (NPP) dataset or observed NPP (ONPP). In focal analysis, region segmentation was done to produce spatially homogeneous patches of the same types of soil, topography, and vegetation, referred to as S-T-V units, to minimize the variation in environmental conditions and their impacts on the NPP. Then, the ONPP within each S-T-V unit was rectified by offsetting the variations in potential NPP determined by the climate-oriented Miami NPP model. Hence, spatial variations in the climate-rectified ONPP (ONPPCR) in an S-T-V unit were solely determined by different human activities across locations. In a case study of the Inner Mongolia grassland of China, three focal statistics, namely mean (Mean), 95% percentile threshold (95%PCT), and maximum (Max) within each S-T-V unit were computed for ONPPCR for each year from 2000 to 2014 to assess the annual carbon uptake that was achievable by updating grassland management practices. The carbon gaps were assessed to be 11.8, 58.9, and 74.6 gC/m(2) per year based on Mean, 95%PCT, and Max, respectively, compared to 65.0 gC/m(2) per year based on the traditional pixel-based approach. We conclude that the carbon gap patterns identified from focal analysis are practically achievable and are more valuable in formulating policy-related decisions for grassland management. Implementing sustainable management practices that are currently being practiced at locations with high ONPPCR in neighboring degraded areas is expected to increase the carbon sequestration by grassland vegetation by one-third. (C) 2020 Elsevier B.V. All rights reserved.
KeywordFocal analysis Grassland Carbon sink Carbon source Geoinformatics
Subject AreaEnvironmental Sciences
DOI10.1016/j.scitotenv.2020.138085
Indexed BySCI
Language英语
WOS KeywordNET PRIMARY PRODUCTIVITY ; QUANTITATIVE ASSESSMENT ; HUMAN APPROPRIATION ; VEGETATION ; DEGRADATION ; MANAGEMENT ; DYNAMICS ; EFFICIENCY ; IMPACTS ; BIOMASS
WOS Research AreaEnvironmental Sciences & Ecology
WOS IDWOS:000535897200006
PublisherELSEVIER
SubtypeArticle
Publication PlaceAMSTERDAM
EISSN1879-1026
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41871296, 51774204] ; Guangdong Innovative and Entrepreneurial Research Team Program [2016ZT06D336] ; GDAS' Special Project of Science and Technology Development [2017GDASCX-0101]
Corresponding Author Emailzongyaosha@whu.edu.cn ; yfbai@ibcas.ac.cn ; hlan@terpmail.umd.edu ; lxf02@shu.edu.cn ; yxie@emich.edu
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/21748
Collection植被与环境变化国家重点实验室
Affiliation1.Wuhan Univ, Sch Remote Sensing & Informat Engn, Wuhan 430079, Peoples R China
2.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
3.Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA
4.Shanghai Univ, Sch Commun & Informat Engn, Shanghai 200072, Peoples R China
5.Shenyang Jianzhu Univ, Sch Transportat Engn, Shenyang 110044, Liaoning, Peoples R China
6.Eastern Michigan Univ, Dept Geog & Geol, Ypsilanti, MI 48197 USA
Recommended Citation
GB/T 7714
Sha, Zongyao,Bai, Yongfei,Lan, Hai,et al. Can more carbon be captured by grasslands? A case study of Inner Mongolia, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,723.
APA Sha, Zongyao,Bai, Yongfei,Lan, Hai,Liu, Xuefeng,Li, Ruren,&Xie, Yichun.(2020).Can more carbon be captured by grasslands? A case study of Inner Mongolia, China.SCIENCE OF THE TOTAL ENVIRONMENT,723.
MLA Sha, Zongyao,et al."Can more carbon be captured by grasslands? A case study of Inner Mongolia, China".SCIENCE OF THE TOTAL ENVIRONMENT 723(2020).
Files in This Item:
File Name/Size DocType Version Access License
1-s2.0-S004896972031(4135KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sha, Zongyao]'s Articles
[Bai, Yongfei]'s Articles
[Lan, Hai]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sha, Zongyao]'s Articles
[Bai, Yongfei]'s Articles
[Lan, Hai]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sha, Zongyao]'s Articles
[Bai, Yongfei]'s Articles
[Lan, Hai]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 1-s2.0-S0048969720315989-main.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.