| Land use/land cover change (LUCC) is an important content of geographical research on global change today. Analysis on dynamic about landscape spatial pattern is one of the key content of landscape ecology. Dabusu Langya Dam Nature Reserve because of its unique landscape Langya Pa Nai-Lin, late update fossils origin, the Dabusu wetlands and key state and the Protection of Birds has a special and important conservation value. However the climate is dry, the land salination, in addition the humanity to this area agriculture natural resource's extensive -like the development use, causes the salting of soil, the desertification, the poor denudation to aggravate, the land resource drop in quality, delivers the function to reduce, the frail ecological environment becomes worse and worse. The paper take the landscape ecology theory as the foundation, the synthesis application remote sensing and the geographic information system technology conducts the system research to the cotton cloth Soviet area land utilization change and the landscape ecology evolutionary process, since through to the different phase remote sensing data and the geography contributory data's processing analysis, carries on the synthesis classification, the extraction in the 1970s the cotton cloth Soviet area three phases (in 1975, in 1996, in 2001) the region landscape type, from quantity change, the spatial variation multiple perspectives, the multi-stratification planes has reflected near for 30 year land utilization and the landscape ecology evolution situation. Take 2001 land utilization digitization chart as the simulation initial period chart, has selected 11 kinds again intrinsic and under the external actuation factor and three kind of scene land demand, namely under the normal pattern's land demand (according to 1996 to 2001 land rate of change), under the economic development pattern's land demand (residential area and arid land area must increase, reduces protectorate wetland), under the ecological protection background land demand (i.e. maintenance biodiversity high land utilization type area, like swampy ground and so on), used the CLUE-S model simulation cotton cloth Soviet area the land utilization/cover change, the simulation time interval from 2001 to 2015, the main findings are as follows:1,In time series aspect, cotton cloth Soviet area from 1975 to 2001 the period arid land, the countryside residential area land, the reed bed and the swampy ground have been continuing to increase, what but with it correspondence is the lake water surface, the weed and the bare land big area reduces. In the spatial distribution change, from 1975 to 2001, the land utilization cover most obvious change occurred in studies middle the area, the big piece lake water surface natural ecosystem evolved for the reed bed half artificial ecosystem. The farmland world-wide studies the region, the saline and alkali land mainly distributes in the cotton cloth Soviet lake eastern area, the countryside residential area distribution disperses, even may take the punctual terrain feature in the macroscopic criterion to study.2,In the landscape criterion level, 1996 mottling several:in 1975 increased 2560, increased nearly 3 times, 2001 mottling several:in 1996 reduced 69, changes not in a big way. 1975, in 1996 and 2001 fractal dimension number approached in 1. in 1975 the cotton cloth Soviet area's landscape multiple coefficients were 1.8125, the uniformity index was 0.8726; in 1996 the cotton cloth Soviet area's landscape multiple coefficients were 1.8699, the uniformity index was 0.8992; in 2001 respectively was 1.8537 and 0.8914. 1975 various landscapes type's accumulation degree was highest, but 1996 various landscapes type's accumulation degree must be slightly lower than 2001; In the type criterion level, the cotton cloth Soviet area's landscape type take the arid land as the matrix, in 1975 accounted for 14.67%, in 1996 accounted for 24.02%, in 2001 was 26.68%. What the form-exponent aspect difference is big is the countryside residential area and the bare land, the countryside residential area form-exponent increases indicated that it which increases while the area, the shape is also getting more and more anomalous. After the bare land's form-exponent increases first, the reduced shape change is similarly very big. Seven types of landscape fractal dimension are lower, 1975 in accordance with the order steeled for: swamp |
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