Arid
Drought monitoring with NDVI-based standardized vegetation index
Peters, AJ; Walter-Shea, EA; Ji, L; Vina, A; Hayes, M; Svoboda, MD
通讯作者Peters, AJ
来源期刊PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING
ISSN0099-1112
出版年2002
卷号68期号:1页码:71-75
英文摘要

Drought is one of the major natural hazards affecting the environment and economy of countries worldwide, Reliance on weather data alone is not sufficient to monitor areas of drought, particularly when these data can be untimely, sparse, and incomplete. Augmenting weather data with satellite images to identify the location and severity of droughts is a must for complete, up-to-date, and comprehensive coverage of current drought conditions, The objective of this research was to standardize, by time of year, the Normalized Difference Vegetation Index (NDVI) to augment drought-monitoring techniques. The Standardized Vegetation Index (SVI) describes the probability of vegetation condition deviation from "normal," based on calculations from weekly NDVI values, The study was conducted with 12 years (1989-2000) of Advanced Very High-Resolution Radiometer (AVHRR) satellite images. Z-scores of the NDVI distribution are used to estimate the probability of occurrence of the present vegetation condition at a given location relative to the possible range of vegetative vigor, historically. The SVI can be interpreted as vegetation condition based on the fact that vegetation is an efficient integrator of climatic and anthropogenic impacts in the boundary layer of the atmosphere. It thereby provides a spatially and temporally continuous short-term indicator of climatic conditions. Findings indicate that the SVI, along with other drought monitoring tools, is useful for assessing the extent and severity of drought at a spatial resolution of 1 km. The SVI is capable of providing a near-real-time indicator of vegetation condition within drought regions, and more specifically areas of varying drought conditions.


类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000173277700008
WOS关键词SATELLITE DATA ; AVHRR DATA ; UNITED-STATES ; PATTERNS ; DESERT ; COVER
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Physical Geography ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/143537
作者单位(1)Univ Nebraska, Ctr Adv Land Management Informat Technol, Lincoln, NE 68588 USA;(2)Univ Nebraska, Sch Nat Resources Sci, Lincoln, NE 68588 USA;(3)Univ Nebraska, Natl Drought Mitigat Ctr, Lincoln, NE 68588 USA
推荐引用方式
GB/T 7714
Peters, AJ,Walter-Shea, EA,Ji, L,et al. Drought monitoring with NDVI-based standardized vegetation index[J],2002,68(1):71-75.
APA Peters, AJ,Walter-Shea, EA,Ji, L,Vina, A,Hayes, M,&Svoboda, MD.(2002).Drought monitoring with NDVI-based standardized vegetation index.PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING,68(1),71-75.
MLA Peters, AJ,et al."Drought monitoring with NDVI-based standardized vegetation index".PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING 68.1(2002):71-75.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Peters, AJ]的文章
[Walter-Shea, EA]的文章
[Ji, L]的文章
百度学术
百度学术中相似的文章
[Peters, AJ]的文章
[Walter-Shea, EA]的文章
[Ji, L]的文章
必应学术
必应学术中相似的文章
[Peters, AJ]的文章
[Walter-Shea, EA]的文章
[Ji, L]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。