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暴雨季节,常因大雨、暴雨或长期降水量过于集中而发生洪涝灾害,使人们的生命、财产安全遭到巨大损失,而加强水源保护涵养对调节径流有重要的意义,将洪水储蓄,有利于水资源的循环利用。本文以金堂县为研究区,首先确定研究区生态系统遥感影像分类体系,对landsat8遥感影像数据,进行大气校正、裁剪,而后使用遥感监督分类技术,得到金堂县生态系统的分类数据,最后结合谷歌地球高清晰图像进行人工修正,获得最终生态系统类型分布图。然后结合水源涵养能力评估算法:综合蓄水能力法、降水储存量法对水源涵养能力进行量化,并比较分析了两种方法所得结果的异同和原因。最终对研究区的水源涵养法进行评价与综合分析,提出了关于研究区域水源涵养的保护措施和建议。研究成果及数据可以为金堂县及其他地区的生态系系统科学管理、保护和决策提供参考。
During the heavy rainy season, floods and floods often occur due to heavy rainfall, heavy rain or long-term precipitation, which greatly damages people’s lives and property safety. Strengthening conservation and conservation of water resources is of great significance to regulating runoff. Saving flood water is conducive to Recycling of water resources. In this paper, Jintang County as the research area, first of all, to determine the ecosystem image classification system of the study area, landsat8 remote sensing image data, atmospheric correction, cropping, and then use remote sensing classification technology to get the classification data of Jintang ecosystem, and finally combined with Google Earth’s high-resolution images were manually corrected for the final ecosystem type distribution. Then, combining with the evaluation method of water conservation capacity: the comprehensive water storage capacity method and the precipitation storage capacity method were used to quantify the water conservation capacity, and the similarities and differences between the two methods were analyzed. Finally, the water source conservation law in the study area is evaluated and comprehensively analyzed, and the protection measures and suggestions on water source conservation in the study area are put forward. The research results and data can provide reference for scientific management, protection and decision-making of ecosystem system in Jintang County and other areas.