结合地物分类的湿地蒸散量定量遥感集成模型

Integrated Quantitative Remote Sensing Model of Wetland Evapotranspiration Combined with Classification

湿地蒸散发量是湿地水量支出的重要组成部分。利用遥感技术可以合理有效地计算出地形复杂的湿地的蒸散发量。将遥感图像分类技术与定量遥感蒸散发模型结合起来,考虑各类地物不同的蒸散发源和水热传输机制,建立了集成模型,分析和计算了湿地主要地物的蒸散发量。通过对各地物类的样区平均蒸散发量与实测数据进行比较,证明结合地物分类的湿地蒸散发量计算集成模型能够取得很好的结果。

Evapotranspiration is an important component of the water budget of wetland. By using the remote sensing technology, the evapotranspiration of wetland can be computed effectively and appro priately. The remote sensing classification technology is combined with the quantitative remote sensing technology. In view of different land with different evapotranspiration sources and different water and heat transfer mechanisms, an integrated model is established and is used to analyze and compute the evapotranspiration of some major wetland. By comparing the average evapotranspiration of different wetland with the measured data, it is shown that the integrated quantitative remote sensing model of wetland evapotranspiration combined with classification can get a good result.