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Topographic controls on vegetation index in a hilly landscape: a case study in the Jiaodong Peninsula, eastern China
Wang, Yetang1,2; Hou, Xiyong3; Wang, Maojian1; Wu, Li3; Ying, Lanlan3; Feng, Yinyin1; Wang, YT (reprint author), Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 73000, Peoples R China. wangyetang@163.com
2013-09-01
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
Volume70Issue:2Pages:625-634
Contribution Rank[Wang, Yetang; Wang, Maojian; Feng, Yinyin] Shandong Marine Fisheries Res Inst, Shandong Prov Key Lab Marine Ecol Restorat, Yantai 264006, Peoples R China; [Wang, Yetang] Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 73000, Peoples R China; [Hou, Xiyong; Wu, Li; Ying, Lanlan] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
AbstractThis study examined topographic influence on spatial and temporal variability in the normalized difference vegetation index (NDVI) derived from the Satellite Pour l'Observation de la Terre-Vegetation at the regional and landscape scales in the Jiaodong Peninsula. The generalized additive models were used to quantify the spatial variation of NDVI attributable to local terrain and topographically related variables including altitude, exposure to incoming solar radiation, topographic wetness index, distance to the nearest stream and distance from the coast. NDVI distribution shows significant dependence on topography. The variables explained 38.3 % of variance in NDVI at the peninsula, and 30-45.3 % of variance in NDVI at the woodland, cropland, and grassland landscapes. At the Jiaodong Peninsula scale, NDVI is influenced primarily by distance from the coast. However, topographic wetness index has the most explanatory power for NDVI at the woodland, cropland, and grassland landscapes. Through a statistical nonparametric correlation analysis (Spearman's r), the study indicates that spatial distribution of NDVI changes during the period 1998-2009 and future change trend of persistence determined by Hurst exponent is closely associated with topography and topography-based attribution. These results highlight the importance of topographic changes at landscape and regional scales as an important control factor on NDVI patterns.; This study examined topographic influence on spatial and temporal variability in the normalized difference vegetation index (NDVI) derived from the Satellite Pour l'Observation de la Terre-Vegetation at the regional and landscape scales in the Jiaodong Peninsula. The generalized additive models were used to quantify the spatial variation of NDVI attributable to local terrain and topographically related variables including altitude, exposure to incoming solar radiation, topographic wetness index, distance to the nearest stream and distance from the coast. NDVI distribution shows significant dependence on topography. The variables explained 38.3 % of variance in NDVI at the peninsula, and 30-45.3 % of variance in NDVI at the woodland, cropland, and grassland landscapes. At the Jiaodong Peninsula scale, NDVI is influenced primarily by distance from the coast. However, topographic wetness index has the most explanatory power for NDVI at the woodland, cropland, and grassland landscapes. Through a statistical nonparametric correlation analysis (Spearman's r), the study indicates that spatial distribution of NDVI changes during the period 1998-2009 and future change trend of persistence determined by Hurst exponent is closely associated with topography and topography-based attribution. These results highlight the importance of topographic changes at landscape and regional scales as an important control factor on NDVI patterns.
KeywordTopography Spatial Variation Temporal Variation Ndvi
Subject AreaEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
Funding OrganizationScientific Research Encouragement Foundation for Outstanding Young and Middle Scientist of Shandong Province [BS2010HZ018]; Public Science and Technology Research Funds Projects of Ocean [201205001]; National Natural Science Foundation of China [40801016]; Knowledge Innovation Program of the Chinese Academy of Sciences [kzcx2-yw-224]; Taishan Scholar Position [TS200651036]
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Indexed BySCI
WOS KeywordGENERALIZED ADDITIVE-MODELS ; ENVIRONMENTAL GRADIENTS ; FOREST COMMUNITIES ; SPECIES RICHNESS ; BURN SEVERITY ; WATER-CONTENT ; LAND-USE ; PATTERNS ; VARIABILITY ; ECOSYSTEM
SubtypeArticle
Language英语
Funding Project海岸带信息集成与综合管理实验室
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS IDWOS:000323737300014
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/7002
Collection海岸带信息集成与战略规划研究中心
Corresponding AuthorWang, YT (reprint author), Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 73000, Peoples R China. wangyetang@163.com
Affiliation1.Shandong Marine Fisheries Res Inst, Shandong Prov Key Lab Marine Ecol Restorat, Yantai 264006, Peoples R China
2.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 73000, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yetang,Hou, Xiyong,Wang, Maojian,et al. Topographic controls on vegetation index in a hilly landscape: a case study in the Jiaodong Peninsula, eastern China[J]. ENVIRONMENTAL EARTH SCIENCES,2013,70(2):625-634.
APA Wang, Yetang.,Hou, Xiyong.,Wang, Maojian.,Wu, Li.,Ying, Lanlan.,...&Wang, YT .(2013).Topographic controls on vegetation index in a hilly landscape: a case study in the Jiaodong Peninsula, eastern China.ENVIRONMENTAL EARTH SCIENCES,70(2),625-634.
MLA Wang, Yetang,et al."Topographic controls on vegetation index in a hilly landscape: a case study in the Jiaodong Peninsula, eastern China".ENVIRONMENTAL EARTH SCIENCES 70.2(2013):625-634.
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