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Study On The Relationship Between Soil ?surface Temperature Characteristics And Landscape Pattern Around The Ebinur Lake Wetland Edge

Posted on:2017-06-20Degree:MasterType:Thesis
Country:ChinaCandidate:Y SuFull Text:PDF
GTID:2323330509951874Subject:Geography
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As the important wetland in Xinjiang,The Ebinur Lake has very important ecological significance to the region and the northern Xinjiang. In recent years, the Ebinur Lake?s ecological environmental has been more and moer degradation, due to the influence of the change of natural environment and human activities. Based on the edge of the Ebinur lake wetland as the study area, through on-the-spot investigation data for the study area soil characteristic data; using Arc GIS and ENVI software processing Landset8 remote sensing images.,we can get the landscape pattern in the study area,and the surface temperature data.Soil and the characteristics of land surface temperatureare are discussed under different landscape pattern.We analyzes the edge zone of landscape types and the distribution of landscape types, and studies the different landscape pattern, the impact on the landscape processes. The conclusion as follows:1.According to the landscape area of large, different landscapes can be divided into three categories, the largest landscape are the grassland landscape and saline-alkali grassland landscape, secondary are bare land landscape and wetland landscape area, forest landscape and farmland landscape area are the smallest.Landscape degree of polymerization is one of the best wetland landscape, the degree of polymerization is: 98.74%; Bare land landscape,the minimum degree of polymerization, the polymerization degree is: 89.41%. Based on the analysis of landscape diversity and heterogeneity index, the study area within the larger gap between the proportion of various landscape types(maximum: 33.97%, the minimum is: 3.40%), within the system anti-interference ability is weak. Advantage of the uneven distribution of landscape types, landscape for landscape and saline-alkali grassland landscape, but these two kinds of landscape vegetation coverage is low, so the study area within the landscape stability is poorer. The spread of the landscape degree is better(65.54%), but not conducive to study landscape pattern in the area to develop in the direction of more optimized.2, Distribution of landscape types influence the surface temperature: the obvious cooling effect of the water, the surface temperature of the bare landscape. The surface temperature of different landscape pattern are significantly different, and the land surface temperature and vegetation coverage has a strong correlation. The landscape types of the diversity and changes of vegetation cover change on landsurface temperature control ability is weak; landscape of the surface temperature is higher in the proportion of the smaller, changes of vegetation cover change on land surface temperature control ability is weak.3, Analysis the characteristic of salt ions content in a vertical direction can be learned: the landscape types in the study area of vertical distribution of soil salinity differences significantly, among them, the farmland landscape due to human activities caused 0-5cm and 5-20 cm soil salinity vertical differentiation is not obvious. Analysis of soil salinity level distribution shows that, Landscape types, the prevailing wind direction, relative slope and so on will affect the distribution of soil salt will influence the distribution of soil salinity.4, Potassium sodium ions can be concluded that study area has good correlation with chloride ion(three correlation of two kinds of ions in the area of > 0.93 * *),magnesium ion and sulfate ion good correlation(three correlation of two kinds of ions in the area of > 0.82 * *), calcium ion has good correlation with sulfuric acid root ion(three correlation of two kinds of ions in the area of > 0.60 *), which demonstrates the salts of research of roughly: potassium chloride, sodium chloride,calcium sulfate, magnesium sulfate.5, Through the analysis of soil phosphorus content, phosphorus content in soil showed that the Ebinur Lake area is relatively low,(< 2% of the total weight of soil)showing poor phosphorus characteristics.
Keywords/Search Tags:landscape Landscape pattern, surface temperature, soil properties
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