【作者】 李万海；

【导师】 赵雨森； 邓立文；

【作者基本信息】 东北林业大学 ， 林业， 2004， 硕士

【摘要】 本文根据两景LandsatTM影像，以及部分航片和一些免费的MODIS数据，利用TM精纠正和TM分幅纠正后镶嵌结果，通过人机交互进行土地利用、土地盐碱化、土地沙化图像判读，并计算各类土地盐碱化、土地沙化面积，然后进行数据集成分析与专题图设计和编制。根据实地调查情况，建立图像判读标志，并对解译结果进行了补充、修改，以确保解译结果的精度。然后采用实地调查和分析统计方法，以植被种类组成、植被区系特征、生活型特征以及生态类型特征，来分析大庆地区荒漠化植物区系特征，并提出了荒漠化治理的一些对策。 结果表明：(1)大庆地区属于生态环境脆弱带和农牧交错地区，受自然因素和人为因素的影响，土地“三化”日益严重：(2)卫星遥感图像解译结果表明，在植物种类组成中，明显反映出大庆荒漠化植物种类相对集中分布于少数的植物科中以及少数的几个大属之中；(3)大庆地区荒漠化植物以多年生草本为主体，而且主要是沙生植物和耐盐碱性植物而具有一定的生态多样性和物种多样性；(4)大庆地区荒漠化区域植物以中生和旱生为主，湿生植物相对较少，说明本区的干旱性质。更多还原

【Abstract】 According to the analysis of two Landsat TM images, some aerial photographs and free MODIS data, this paper interpreted the images from the aspects of land utilization, salinization and soil sanding by way of man-machine interaction using TM correction and enchasing after TM image dividing correction. Then, the salinazaion and sanding area of different types of land were calculated, and data integrated analysis and special maps design and weaving were performed. The interpretation results were supplemented and modified to ensure the interpretation precision by developing labels of image interpretation based on investigation results of the spot According to the vegetation component, plant life-form and ecotypes characteristics. The desertification florn characteristic of Daqing district was analyzed with investigation on the spot and statistical method. Some countermeasures of desertification fathering are also put forward according to the local conditions.The results of this paper are as follows. (1) Daqing city lies in a farming-herd interleaving zone with frail ecological environment Because of natural and man-made factors, land salinization, sanding and grassland decreasing are more serious. (2) TM image interpretation results obviously show that the desertification plants in Daqing city belongs to several plant sections and categories. ( 3) Most of the desertification plants are perennial herbs, which are made up of psammophytes and xerophytes with zoology and species diversity. (4) Most plants in desertification area are yeyophytes and mesophytes and there is few hygmphytes, which shows that this area is droughty.更多还原