Arid
DOI10.1016/j.jaridenv.2016.04.004
Using NDVI to measure precipitation in semi-arid landscapes
Birtwistle, Amy N.1; Laituri, Melinda1; Bledsoe, Brian2; Friedman, Jonathan M.3
通讯作者Laituri, Melinda
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2016
卷号131页码:15-24
英文摘要

Measuring precipitation in semi-arid landscapes is important for understanding the processes related to rainfall and run-off; however, measuring precipitation accurately can often be challenging especially within remote regions where precipitation instruments are scarce. Typically, rain-gauges are sparsely distributed and research comparing rain-gauge and RADAR precipitation estimates reveal that RADAR data are often misleading, especially for monsoon season convective storms. This study investigates an alternative way to map the spatial and temporal variation of precipitation inputs along ephemeral stream channels using Normalized Difference Vegetation Index (NDVI) derived from Landsat Thematic Mapper imagery. NDVI values from 26 years of pre- and post-monsoon season Landsat imagery were derived across Yuma Proving Ground (YPG), a region covering 3,367 km(2) of semiarid landscapes in southwestern Arizona, USA. The change in NDVI from a pre-to post-monsoon season image along ephemeral stream channels explained 73% of the variance in annual monsoonal precipitation totals from a nearby rain gauge. In addition, large seasonal changes in NDVI along channels were useful in determining when and where flow events have occurred. (C) 2016 Elsevier Ltd. All rights reserved.


英文关键词Normalized Difference Vegetation Index (NDVI) Yuma proving ground Landsat TM Sonoran desert Monsoon season Ephemeral stream channels
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000377732000003
WOS关键词VEGETATION DYNAMICS ; RIPARIAN VEGETATION ; SOIL-MOISTURE ; RAINFALL ; VARIABILITY ; RESPONSES ; DESERT ; PULSES ; REGION ; TRENDS
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
来源机构United States Geological Survey ; Colorado State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/194137
作者单位1.Colorado State Univ, Ecosyst Sci & Sustainabil, Ft Collins, CO 80523 USA;
2.Univ Georgia, Coll Engn, Athens, GA 30602 USA;
3.US Geol Survey, 2150 Ctr Ave,Bldg C, Ft Collins, CO 80526 USA
推荐引用方式
GB/T 7714
Birtwistle, Amy N.,Laituri, Melinda,Bledsoe, Brian,et al. Using NDVI to measure precipitation in semi-arid landscapes[J]. United States Geological Survey, Colorado State University,2016,131:15-24.
APA Birtwistle, Amy N.,Laituri, Melinda,Bledsoe, Brian,&Friedman, Jonathan M..(2016).Using NDVI to measure precipitation in semi-arid landscapes.JOURNAL OF ARID ENVIRONMENTS,131,15-24.
MLA Birtwistle, Amy N.,et al."Using NDVI to measure precipitation in semi-arid landscapes".JOURNAL OF ARID ENVIRONMENTS 131(2016):15-24.
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