干旱区生态环境知识资源中心(Arid): Precipitation and topography modulate vegetation greenness in the mountains of Baja California, Mexico

Arid

DOI	10.1007/s00484-019-01763-5
	Precipitation and topography modulate vegetation greenness in the mountains of Baja California, Mexico
	Jose Del-Toro-Guerrero, Francisco 1; Kretzschmar, Thomas 1; Bullock, Stephen H.2
通讯作者	Jose Del-Toro-Guerrero, Francisco
来源期刊	INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
ISSN	0020-7128
EISSN	1432-1254
出版年	2019
卷号	63 期号:10 页码:1425-1435
英文摘要	Vegetation greenness (normalized difference vegetation index, NDVI) showed significant temporal and spatial correlations with precipitation and topography-derived features within the context of slope aspect (South- (SFS) and North-facing slopes (NFS) and an intermountain valley (IMV)) in a semi-arid Mediterranean-climate watershed in northwestern Baja California, Mexico. Rank correlation with annual precipitation (1986-2016) showed a strong positive relationship with wet season NDVI at SFS (Rs = 0.82), IMV (Rs = 0.79), and NFS (Rs = 0.65) but moderate relation and only on hillslopes in the dry season (SFS, Rs = 0.47; NFS, Rs = 0.39). Thus, the vegetation on the more xeric SFS sites was more responsive to intra-annual and inter-annual precipitation than on either IMV or NFS. The correlation of NDVI with six topography-derived environmental attributes (elevation, slope gradient, curvature, drainage density, topographic wetness index, solar radiation) was weak to moderate, varied in degree and significance between years with exceptionally high or low NDVI, and often differed in sign between SFS, NFS, and IMV. Results showed that precipitation controlled vegetation greenness, under the three aspect conditions, more closely than did the other topography-derived features, and the sparse deciduous vegetation of SFS showed stronger associations with precipitation than IMV or NFS. The measurement of these relationships should be continued and complemented by other studies to improve the overall model, because they are important to modeling ecohydrology and productivity, and may be of use for projecting and hindcasting vegetation dynamics.
英文关键词	NDVI Hydro-climatological variability Precipitation controls Topographic controls Hillslope vegetation greenness Correlation analyses Semi-arid mountainous watershed Mediterranean-type ecosystems
类型	Article
语种	英语
国家	Mexico
收录类别	SCI-E
WOS记录号	WOS:000486176300011
WOS关键词	LAND-COVER CHANGE ; INTERANNUAL VARIABILITY ; CLIMATE ; NDVI ; PATTERNS ; PRODUCTIVITY ; SHRUBLANDS ; ALGORITHM ; DYNAMICS ; RAINFALL
WOS类目	Biophysics ; Environmental Sciences ; Meteorology & Atmospheric Sciences ; Physiology
WOS研究方向	Biophysics ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Physiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216364
作者单位	1.CICESE, Dept Geol, Ensenada 22860, Baja California, Mexico; 2.CICESE, Dept Biol Conservac, Ensenada 22860, Baja California, Mexico
推荐引用方式 GB/T 7714	Jose Del-Toro-Guerrero, Francisco,Kretzschmar, Thomas,Bullock, Stephen H.. Precipitation and topography modulate vegetation greenness in the mountains of Baja California, Mexico[J],2019,63(10):1425-1435.
APA	Jose Del-Toro-Guerrero, Francisco,Kretzschmar, Thomas,&Bullock, Stephen H..(2019).Precipitation and topography modulate vegetation greenness in the mountains of Baja California, Mexico.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,63(10),1425-1435.
MLA	Jose Del-Toro-Guerrero, Francisco,et al."Precipitation and topography modulate vegetation greenness in the mountains of Baja California, Mexico".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 63.10(2019):1425-1435.