The Vegetation Drought Response Index (VegDRI): A new integrated approach for monitoring drought stress in vegetation

被引：316
|
作者：
Brown, Jesslyn F. [1 ]
Wardlow, Brian D. [2 ]
Tadesse, Tsegaye [2 ]
Hayes, Michael J. [2 ]
Reed, Bradley C. [3 ]
机构：
[1] SAIC, USGS, Earth Resources Observat & Sci Ctr, Sioux Falls, SD 57198 USA
[2] Univ Nebraska, Sch Nat Resources, Natl Drought Mitigat Ctr, Lincoln, NE 68583 USA
[3] US Geol Survey, Flagstaff Field Ctr, Flagstaff, AZ 86001 USA
来源：
GISCIENCE & REMOTE SENSING | 2008年 / 45卷 / 01期
关键词：
D O I：
10.2747/1548-1603.45.1.16
中图分类号：
P9 [自然地理学];
学科分类号：
0705 ; 070501 ;
摘要：
The development of new tools that provide timely, detailed-spatial-resolution drought information is essential for improving drought preparedness and response. This paper presents a new method for monitoring drought-induced vegetation stress called the Vegetation Drought Response Index (VegDRI). VegDRI integrates traditional climate-based drought indicators and satellite-derived vegetation index metrics with other biophysical information to produce a 1 km map of drought conditions that can be produced in near-real time. The initial VegDRI map results for a 2002 case study conducted across seven states in the north-central United States illustrates the utility of VegDRI for improved large-area drought monitoring.
引用
收藏
页码：16 / 46
页数：31
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