【作者】 田源；

【作者基本信息】 新疆大学 ， 地图学与地理信息系统， 2009， 硕士

【摘要】 绿洲是干旱区特有的一种自然地理状态.绿洲的存在严格地受山地-绿洲-荒漠系统物质能量流动的作用,因此研究新疆的绿洲就要把重点放在研究山地-绿洲-荒漠间的相互作用过程,包括绿洲内部能量的流动方式以及绿洲与荒漠、山地之间的界面过程以及相互作用的机理等。鉴于上述新疆独特的山地-绿洲-荒漠系统。本文基于遥感技术,采用温度这一指标来研究绿洲内部以及绿洲与荒漠之间的能量的流动方式以及相互作用的机理。具体研究内容如下:第五章:在研究区的选取上,选择了绿洲主体以及克里雅河的下游地区。继而分析了绿洲平均温度的分布特征,得出地表温度受下垫面类型的影响比较明显,地表土地类型的分布基本决定了地温的总体分布。通过对温度相异图的研究发现温度的分布同时也受到不同土地利用类型空间分布的影响,如由于水体比较均一,所以其温度变化比较平缓,而在绿洲内部,由于其道路加耕地的网状结构,使得温度的变化比较剧烈。在分析了绿洲温度分布特征后,本文又对克里雅河下游河段进行了温度变化的趋势分析,得出在南北方向上,没有温度变化趋势,而在东西方向上,温度变化比较明显。同时也说明克里雅河对其河道两边的影响范围十分有限。第六章:本文从景观格局的角度分析了土地利用类型和温度场的关系,表明地表景观的变化会导致温度场相应的变化。从第五章的分析中发现林地的温度明显低于周边耕地的温度,因此,本文接着分析了绿洲内部林地对温度场的廊道效应。利用Arcgis软件的缓冲区分析功能,间隔50米,计算了不同缓冲区温度的统计数值,发现林地对周边环境的影响范围大概可以确定为200米;采用相同的分析方法,间隔300米,又分析了克里雅河对周边环境温度的影响范围,得出该范围在900米左右,可见克里雅河两岸的生态环境十分脆弱。接着分析了植被盖度和温度的关系,发现植被盖度与地表温度存在着很强的负相关关系。更多还原

【Abstract】 Oasis is a unique geographical status in the arid area. the existence of oasis is strictly by the material and energy flow of the Mountain - Oasis - Desertification system.So ,to study the oasis in XinJiang,it is should to focus on the research of the interaction process between the Mountain - Oasis - Desertification system. Including the flow of energy of the oasis,and the interface between the process of the oasis,desert, and the mountains.and the mechanism of interaction.Because of the unique mountains- oasis - Desert System in XinJiang.This article use temperature as a index to study the interaction process between the Mountain - Oasis - Desertification system. Including the flow of energy of the oasis,and the interface between the process of the oasis,desert, and the mountains.and the mechanism of interaction.Chapter5:In the question of select study area,this article chose the main oasis,and the downstream of Keriya River,and analysis the distribution of average temperature in the oasis.it is found that surface temperature is affect by the class of land surface type obviously.and the distribution of surface temperature is determined by the surface land use type.With the study of temperature dissimilarity map.we found that the distributions of temperature are subject to different types of spatial distribution of land-use at the same time. For example,Due to relatively homogeneous body of water, its relatively slow temperature changes;In the internal of oasis, because of its network structure of roads and arable land, temperature changes fast.After analysis the characteristics of temperature distribution of oasis.This article analysis the temperature change of the downstream of Keriya River using trend analysis.and found that in the north-south direction, there is no trend of temperature changes; In the east-west direction, the temperature changes more obvious.This result show that the impact of the radius of Keriya River is very Limited.Chapter6:This article analysis land-use types and the relationship between the temperature field from the perspective of landscape pattern.It is indicate that the surface changes in the landscape will lead to corresponding changes in temperature field. From the analysis of Chapter 5 of the temperature found in woodland was significantly lower than the temperature of the surrounding farmland.So, This article then analyzes the woodland of oasis on the temperature field within the corridor effect.With the use of Buffer analysis function of Arcgis software,at intervals 50m,this article calculated temperature statistics of different buffer values,and found the affected area for woodland on the surrounding environment is about 200 meters;using the same analytical methods,at intervals 300m,then this article analyzes the Keriya River on the impact of the surrounding ambient temperature range,and the result show that the distance is about 900 meters.so we could make a conclusion that the eco-environment of Keriya River is very fragile.Then this article analyses the relationshops between vegetation cover and the temperature using 2-D Scatter Plots,and the result show that there is a strong negative correlation between the vegetation cover and land surface temperature.更多还原