IGSNRR OpenIR
Sensitivity and Applicability of Landscape Leakiness Index in Determining Soil and Water Conservation Function of a Subtropical Riparian Vegetation Buffer Zone
Xu, Shanshan1,2; Zhao, Qinghe1,2; Liu, Yu3; Ding, Shengyan1,2; Qin, Mingzhou1,2
2018-06-05
Source PublicationENVIRONMENTAL ENGINEERING SCIENCE
ISSN1092-8758
Pages10
Corresponding AuthorZhao, Qinghe(zhaoqinghe@henu.edu.cn)
AbstractThe leakiness index (LI) is an effective tool to measure the potential of landscapes in retaining resources (e.g., water and soil) that are vital for plant growth and environmental improvement in arid and semiarid landscapes by using vegetation coverage (VC) and digital elevation model (DEM) data derived from remote sensing images. However, sensitivity and applicability of LI in subtropical area have been rarely reported. In this study, effect of data resolution of the input parameters (VC and DEM) of LI was analyzed by using upscaling and downscaling methods. We also try to demonstrate application potential of LI in the Beijiang riparian vegetation buffer zone, a subtropical area, by comparing the result produced from LI with that from the universal soil loss equation (USLE). Results indicated that sensitivity of DEM to resolution and its influence on LI were lower compared with VC. LI sharply increased from 0.33 to 0.68 with decreasing VC, but minimally varied with increasing DEM. Performance of LI showed fluctuating changes in 1995, 2000, 2005, 2010, and 2015 with leakiness values of 0.09, 0.12, 0.21, 0.24, and 0.23, respectively. LI was significantly and positively correlated with erosion rate calculated using USLE in the corresponding period (p=0.025), suggesting that LI can exhibit high potential in indicating soil and water conservation function in the targeted area. With decreasing data resolution (from 30 to 60, 80, 90, 120, 250, and 500m), LI displayed a knee point at 120m resolution scale; hence, 120m resolution could be the critical scale for using LI to larger regions. This preliminary attempt can provide a better understanding of LI, and will contribute to the limited knowledge regarding the sensitivity and application potential of LI to subtropical area.
KeywordBeijiang River leakiness index sensitivity and applicability soil and water conservation subtropical riparian buffer zone
DOI10.1089/ees.2018.0061
WOS KeywordLOESS PLATEAU ; RAINFALL SIMULATION ; SPATIAL-PATTERN ; SOUTHERN CHINA ; EROSION ; RUNOFF ; SEDIMENT ; COVER ; MODEL ; RIVER
Indexed BySCI
Language英语
Funding ProjectNational Natural Sciences Foundation of China[41301197] ; National Natural Sciences Foundation of China[41771202] ; Colleges and Universities Key Scientific Research Projects of Henan Province[18A170004] ; Program for Innovative Research Team (in Science and Technology) in University of Henan Province[16IRTSTHN012]
Funding OrganizationNational Natural Sciences Foundation of China ; Colleges and Universities Key Scientific Research Projects of Henan Province ; Program for Innovative Research Team (in Science and Technology) in University of Henan Province
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000434367200001
PublisherMARY ANN LIEBERT, INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54941
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhao, Qinghe
Affiliation1.Minist Educ, Key Lab Geospatial Technol Middle & Lower Yellow, Kaifeng, Peoples R China
2.Henan Univ, Coll Environm & Planning, Jinming Rd, Kaifeng 475004, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Xu, Shanshan,Zhao, Qinghe,Liu, Yu,et al. Sensitivity and Applicability of Landscape Leakiness Index in Determining Soil and Water Conservation Function of a Subtropical Riparian Vegetation Buffer Zone[J]. ENVIRONMENTAL ENGINEERING SCIENCE,2018:10.
APA Xu, Shanshan,Zhao, Qinghe,Liu, Yu,Ding, Shengyan,&Qin, Mingzhou.(2018).Sensitivity and Applicability of Landscape Leakiness Index in Determining Soil and Water Conservation Function of a Subtropical Riparian Vegetation Buffer Zone.ENVIRONMENTAL ENGINEERING SCIENCE,10.
MLA Xu, Shanshan,et al."Sensitivity and Applicability of Landscape Leakiness Index in Determining Soil and Water Conservation Function of a Subtropical Riparian Vegetation Buffer Zone".ENVIRONMENTAL ENGINEERING SCIENCE (2018):10.
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