Methodology to detect long-term trends in groundwater by monitoring changes in vegetation distribution

被引：3

作者：

Hamandawana, Hamisai ^{[1
]}

机构：

[1] Inst Soil Water & Climate, Agr Res Council, ZA-0001 Pretoria, South Africa

来源：

INTERNATIONAL JOURNAL OF REMOTE SENSING | 2011年 / 32卷 / 12期

关键词：

OKAVANGO DELTA; CLIMATE-CHANGE; BOTSWANA; DESICCATION; PHOTOGRAPHS; KALAHARI; ECOLOGY; AFRICA; REGION;

D O I：

10.1080/01431161003747497

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

Multidate remotely sensed images, covering a period of 34 years (1967-2001), have been used to detect long-term trends in groundwater resources around Lake Ngami in the distal reaches of Botswana's Okavango Delta. The detection methodology is based on monitoring changes in the vegetation distribution of the studied area. The changes consist of sustained shifts from perennial wetland to an intermittently flooded dryland and a significant increase in woody species adapted to low water table conditions (e.g. Acacia mellifera and Acacia erioloba).

引用

页码：3329 / 3343

页数：15

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