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对提取干旱区盐渍化信息的若干方法进行了评述,并且选取位于干旱区地带的盐渍化典型区域——阿克苏地区的库车、新和、沙雅县以及和田地区的于田县作为研究区进行实证分析。并采用同一时相的ETM+数据,运用K-T变换、比值变换以及通过NDVI指数和分类来提取信息发现效果明显。通过实证分析发现:虽然研究区都地处塔里木盆地周边地区,一个是塔北绿洲,另一个是塔南绿洲。但由于水文(盐渍化形成的关键)、气候(形成盐渍化土壤的驱动力)、地形(盐渍化土壤分布及差异的主要因素)、人类活动(盐渍化土壤形成的重要因素)等因素差异的存在,导致了盐渍化情况的差异。
A number of methods for extracting salinization information from arid areas were reviewed, and the typical salinization areas in the arid area - Kuche, Xinhe and Shahe, in Aksu and Yutian in Hetian District for empirical analysis. And using the same phase of ETM + data, the use of K-T transform, ratio transformation and the NDVI index and classification to extract the information found significant results. Empirical analysis shows that although the study areas are located in the surrounding area of the Tarim Basin, one is the Tabei Oasis and the other is the Tannan Oasis. However, due to hydrology (the key to the formation of salinization), the climate (driving forces that form salinized soils), the topography (salinization of soils and the major contributors to differences), human activity (an important factor in the formation of salinized soils) The existence of other factors, led to the salinization of the differences.