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首页> 外文会议>Proceedings of GlobWetland: Looking at Wetlands from Space >MONITORING LONG-TERM CHANGES IN FLOODING AND SOIL WETNESS, AND THEIR EFFECT ON THE SPATIAL DISTRIBUTION OF PLANTS IN THE CANDELARIA RIVER WATERSHED, SOUTHEAST MEXICO
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MONITORING LONG-TERM CHANGES IN FLOODING AND SOIL WETNESS, AND THEIR EFFECT ON THE SPATIAL DISTRIBUTION OF PLANTS IN THE CANDELARIA RIVER WATERSHED, SOUTHEAST MEXICO

机译：监测墨西哥东南部坎德拉里亚河流域洪水和土壤湿度的长期变化及其对植物空间分布的影响

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摘要

We used radar/ERS, MSS and TM imagery to assess the extent of flooding at different time periods (1974-2004), and we correlate this extent as a function of both precipitation, and river discharge. Also, conditions of soil wetness were estimated using JERS radar imagery to represent extreme scenarios of dry and wet years. Then, we compared both flooding extent, and soil wetness again the distribution and plant composition of wetlands. Differences in wetland extent between wet and dry scenarios were about 45%. Natural boundaries created by long-term levels of flooding and wetness change constrain the spatial distribution of aquatic plants, which current spatial location is not explained by existing hydrological patterns.
机译：我们使用雷达/ ERS，MSS和TM图像评估了不同时间段（1974-2004年）的洪水泛滥程度，并将该程度与降水和河流流量的函数相关联。此外，使用JERS雷达图像估算了土壤湿度条件，以代表干旱和潮湿年份的极端情况。然后，我们再次比较了洪水泛滥的程度和土壤湿度，以及湿地的分布和植物组成。干湿情景之间的湿地范围差异约为45％。长期的洪水和湿度变化造成的自然界线限制了水生植物的空间分布，当前的空间位置无法用现有的水文模式来解释。

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