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Xinjiang University (2009)

Study on the Space Thermal Environment of Typical Oasis in the Arid Region Using Remote Sensing Technology

田源; Tian Yuan

Titre : Study on the Space Thermal Environment of Typical Oasis in the Arid Region Using Remote Sensing Technology

Auteur : 田源; Tian Yuan

Grade : Master’s Theses 2009

Université : Xinjiang University

Résumé
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

Mots clés : Arid Region Oasis Thermal Environment

Présentation (CNKI)

Page publiée le 15 septembre 2014, mise à jour le 19 février 2018