摘    要青藏高原地处内陆，受人类活动影响较小，且其间湖泊密布，所以能敏感地指示气候变化。本文利用Landsat系列卫星影像数据，通过ENVI、ArcGIS等软件，利用NDWI水体指数、决策树分类及目视解译相结合的方法，提取了纳木错湖泊2000年~2014年旱季和雨季湖泊动态变化面积，得出了湖泊面积随时间变化而不断扩张的结论。同时，本文结合当雄站点的气象观测数据，分析了旱季和雨季时期湖泊面积变化与降水量、温度之间的关系。根据旱季湖泊面积与旱季降水量、旱季温度的相关性拟合，雨季湖泊面积与雨季降水量、雨季温度的相关性拟合，得出降水量和温度均与湖泊面积呈线性正相关的结论。降水量与温度是纳木错湖泊面积扩张的驱动因素。89562

The Qinghai-Tibet Plateau is located in the inland and is less affected by human activities, and the lake is so dense that it can be sensitive to climate change。 In this paper, the dynamic change area of the lake in the dry season and the rainy season from 2000 to 2014 was extracted by using the NDWI water index, the decision tree classification and the visual interpretation method by using the Landsat series of satellite imagery data and the software of ENVI and ArcGIS。 The conclusions were drawn that the lake area changed with time。 At the same time, this paper analyzes the relationship between lake area change and precipitation and temperature during dry season and rainy season, combined with the meteorological observation data of Dangxiong site。 According to the correlation between the dry season lake area and the dry season precipitation and the dry season temperature, the correlation between the rainy season lake area and the rainy season precipitation and the rainy season temperature shows that the precipitation and temperature are linearly positive correlation with the lake area。 Precipitation and temperature are the driving factors for the expansion of the lake area。源Q于W优E尔A论S文R网wwW.yOueRw.com 原文+QQ75201,8766

毕业论文关键词：遥感；高原湖泊；面积监测；驱动机制

Keywords:  remote sensing; plateau lakes; area monitoring; drive mechanism 

目    录

1  前言 1

1。1  研究背景和意义 1

1。2  国内外研究进展 1

1。2。1  遥感在湖泊提取研究中的应用 1

1。2。2  青藏高原湖泊变化研究 1

1。3  研究内容和技术路线 2

2  研究区概况 3

2。1  自然地理概况 3

2。2  社会经济概况 3

3  研究数据和方法 3

3。1  数据类型及来源 3

3。1。1  数据源选择来自优Y尔L论W文Q网wWw.YouERw.com 加QQ7520~18766 依据 4

3。1。2  数据预处理 4

3。2  水体的光谱特征 4

3。3  湖泊面积提取 4

3。3。1  提取方法甄选 4

3。3。2  湖泊面积提取 5

4  湖泊的动态变化分析 6

4。1  湖泊逐年面积变化分析 6

4。2  湖泊面积旱季、雨季对比分析