干旱区生态环境知识资源中心(Arid): Improving remote sensing-based net primary production estimation in the grazed land with defoliation formulation model

Arid

DOI	10.1007/s11629-018-5200-2
	Improving remote sensing-based net primary production estimation in the grazed land with defoliation formulation model
	Ye Hui 1,6; Huang Xiao-tao 2,6; Luo Ge-ping1,6 ; Wang Jun-bang 3,6; Zhang Miao 4,6; Wang Xin-xin 5
通讯作者	Luo Ge-ping
来源期刊	JOURNAL OF MOUNTAIN SCIENCE
ISSN	1672-6316
EISSN	1993-0321
出版年	2019
卷号	16 期号:2 页码:323-336
英文摘要	Remote sensing (RS) technologies provide robust techniques for quantifying net primary productivity (NPP) which is a key component of ecosystem production management. Applying RS, the confounding effects of carbon consumed by livestock grazing were neglected by previous studies, which created uncertainties and underestimation of NPP for the grazed lands. The grasslands in Xinjiang were selected as a case study to improve the RS based NPP estimation. A defoliation formulation model (DFM) based on RS is developed to evaluate the extent of underestimated NPP between 1982 and 2011. The estimates were then used to examine the spatiotemporal patterns of the calculated NPP. Results show that average annual underestimated NPP was 55.74 gC.m(-2)yr(-1) over the time period understudied, accounting for 29.06% of the total NPP for the Xinjiang grasslands. The spatial distribution of underestimated NPP is related to both grazing intensity and time. Data for the Xinjiang grasslands show that the average annual NPP was 179.41 gC.m(-2)yr(-1), the annual NPP with an increasing trend was observed at a rate of 1.04 gC.m(-2)yr(-1) between 1982 and 2011. The spatial distribution of NPP reveals distinct variations from high to low encompassing the geolocations of the Tianshan Mountains, northern and southern Xinjiang Province and corresponding with mid-mountain meadow, typical grassland, desert grassland, alpine meadow, and saline meadow grassland types. This study contributes to improving RS-based NPP estimations for grazed land and provides a more accurate data to support the scientific management of fragile grassland ecosystems in Xinjiang.
英文关键词	Remote sensing Defoliation formulation model Net primary production Grazed land Spatial-temporal patterns Xinjiang
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000458657000007
WOS关键词	DIFFERENCE VEGETATION INDEX ; ESTIMATING ABOVEGROUND BIOMASS ; LEAF-AREA INDEX ; GRAZING INTENSITY ; INNER-MONGOLIA ; NORTHERN CHINA ; USE EFFICIENCY ; CLIMATE-CHANGE ; GRASSLAND ; SATELLITE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所 ; 中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217242
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Xinjiang, Peoples R China; 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Restorat Ecol Cold Reg Qinghai, Xining 810008, Qinghai, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; 4.Shaanxi Normal Univ, Northwest Land & Resources Res Ctr, Xian 710119, Shaanxi, Peoples R China; 5.Fudan Univ, Inst Biodivers Sci, Key Lab Biodivers Sci & Ecol Engn, Minist Educ, Shanghai 200433, Peoples R China; 6.China Univ, Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ye Hui,Huang Xiao-tao,Luo Ge-ping,et al. Improving remote sensing-based net primary production estimation in the grazed land with defoliation formulation model[J]. 中国科学院新疆生态与地理研究所, 中国科学院地理科学与资源研究所,2019,16(2):323-336.
APA	Ye Hui,Huang Xiao-tao,Luo Ge-ping,Wang Jun-bang,Zhang Miao,&Wang Xin-xin.(2019).Improving remote sensing-based net primary production estimation in the grazed land with defoliation formulation model.JOURNAL OF MOUNTAIN SCIENCE,16(2),323-336.
MLA	Ye Hui,et al."Improving remote sensing-based net primary production estimation in the grazed land with defoliation formulation model".JOURNAL OF MOUNTAIN SCIENCE 16.2(2019):323-336.