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首页> 外文会议>The 28th International Symposium on Remote Sensing of Environment, Mar 27-31, 2000, Cape Town, South Africa >Change and Variation in Wadi Vegetation in a Hyper-arid Environment, studied by RS (LANDSAT TM and MSS) Timeseries
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Change and Variation in Wadi Vegetation in a Hyper-arid Environment, studied by RS (LANDSAT TM and MSS) Timeseries

机译：RS（LANDSAT TM和MSS）时间序列研究超干旱环境中旱谷植被的变化和变化

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摘要

Satellite monitoring of vegetation change is conducted in the hyper-arid area of the Eastern Desert of Egypt Perennial vegetation grows in wadis and in other landfonns where run-on water conditions prevail Arboreal vegetation, which is subject to change, is, however, very sparse (less than 4 trees/ha). Four different datasets are part of the change analysis: 1973, 1979, 1984 (all Landsat MSS images) and 1996 (TM). The change analysis is based on a subtraction between Red bands. A subsequent classification into two broad classes; increase and decrease, gives a total of eight trends across periods. These cross-periodic trends are interpreted according to field-data and meteorological trends. Although several sources of errors introduce variations in the change analysis, the results do reflect the field observations.
机译：卫星监测植被变化是在埃及东部沙漠的高干旱地区进行的，多年生植物生长在瓦迪斯和其他持续流水条件盛行的土地上，然而，树木植被非常稀疏，但极少发生（少于4棵树/公顷）。四个不同的数据集是更改分析的一部分：1973、1979、1984（所有Landsat MSS图像）和1996（TM）。更改分析基于红色波段之间的减法。随后分为两大类；增加和减少，得出整个期间的八个趋势。这些跨周期趋势是根据现场数据和气象趋势来解释的。尽管错误的几种来源在变更分析中引入了差异，但结果确实反映了现场观察。

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