| Ecosystem services value is one of the main methods to evaluate eco-environment change. Landscape ecology has the same research object with ecosystem services value. Therefore, it is an effect assessment method, the ecosystem services value evaluation system, to evaluate landscape function change which caused by landscape pattern change. Nevertheless, at present, the ecosystem services value evaluation system, such as Constanza and Xie Gaodi, both of their methods are based on global or great region scale, and their classification for landscape ecosystem which can directly reflect human activities are not perfect, and also the value assessment methods are still under immature development. In arid area, the landscape types and characteristics have obvious differences compared with humid region. So, to explore a scientific and suitable evaluation method and system for evaluating oasis-desert ecosystem services value in arid area is necessarily and urgently.Considering these problems discussed above, based on the predecessor's achievements, this research focused on next five major topics:1) Some landscape indexes have been relatively analyzed by using multi-periods landscape data of Qitai, Wusu, Shanshan oasises in Xingjing area for demonstrating the relativity relation among these landscape indexes. And then the author discussed the value for the ecological evaluation of typical oasis in arid area from across and longitudinal direction respectively. The Results showed that it is difficult or imprecise in landscape ecology comparison assessment by single landscape pattern indexes. The landscape spatial analysis method should combine ecological processes and other data indexes which can response the real situation, only by this way, the landscape pattern spatial analysis has more practical application value in landscape ecology and eco-environmental assessment.2) Based on MODIS data, combining with the method of remote sensing ecological, we calculated the terrestrial ecological services value of Xinjiang area in 2000a. And then the quantitative relationship between NPP and ecological services value had been approached by statistical method. The results showed that, the total terrestrial ecological services value of Xinjiang area is 8.87105×1011 yuan in 2000a, in which the service value of CO2 fixation is the highest, expiration O2 is second, nutrition circulation is last. The service value varied with different land cover, the forest had the highest service value of 44073.39 yuan·hm-2, and farmland had a higher value of 39100.37 yuan·hm-2, bushes and grassland is also higher than 15000 yuan·hm-2, but the bare or dessert land is only 116.14 yuan·hm-2, the city land is almost 0 yuan·hm-2. The spatial distribution of ecological services value is similar to FVC and NPP, which revealed a high relativity relationship. Conbining with analysis results of the relationship between Ecosystem Service Value and NPP, and relative data from 3 similar cases of other researchers, the author believe that it is a favorable linear correlative relationship between ecosystem services value and NPP. Therefore, it is a relative reliable and feasible approach to fast estimate ecosystem services value from NPP by the support of RS technology. This research results give an approach to evaluate terrestrial ecological services value dynamical and expediently.3) By using of the overlay image matting approach, NPP from MODIS data product (MOD17A3), and the landscape types maps of typical oasis in Xinjiang area, based on RS(Remote Sensing) and GIS(Geographic information system), the author have extracted and calculated the NPP of all landscape types in the landscape-scale. This work could give a support in method and basic data for the constuction of landscape scale ecological system services value calculation in arid area.4) According to the relationship between NPP and ecosystem services value, the Equivalent factors which have not in Constanza and Xie Gaodi systems have been reckoned, and then, the image matting approach based on Constanza system is constructed to calculate the ecosystem services value for arid area in landscape scale.5) By using of the evaluation system of Constanza, Xie Gaodi and the image matting approach, the ecosystem services value have been comprehensively evaluated based on temporal multi-phase landscape pattern in the arid region of QiTai and WuSu in Xinjiang. The results indicated that three systems have same conclusion in the tendencies of landscape development, but the image matting approach has the most significant meaning for instructing ecosystem services evaluation in arid area, and the Constanza system take second place, Xie Gaodi system at last. These also illustrate that it is credible of this evaluation system proposed by author for evaluating oasis-desert ecosystem services value based on the landscape scale, and this evaluation system can be applied on the eco-environment assessment of arid area for its more accuracy results coming from the detailed classification on landscape types.6) Because of the effects of increasing global climate change and human activities, the natural and artificial landscape may change correspondingly. In this study, we proposed an approach called image matting method to monitoring the dynamic characteristic of NPP, and constructing an ecosystem services assessment system based on landscape scale which has temporal dynamic property, and been verified through the practical examples. At the same time, by using of the transformation matrix of landscape and the climate factors change, we have explained the reasons of the region ecosystem services change.In this paper, Based on the method of remote sensing ecological, calculated the terrestrial ecological services value of Xinjiang area in 2000a. And then the quantitative relationship between NPP and ecological services value had been approached by statistical method., the author tried to propose an approach to calculate the ecosystem services value by using of the NPP based on MODIS data product in the scale of landscape, and construct the feasible technical route and approach for the landscape ecosystem services value evaluation in arid area. It is of important significance for the Green GDP being subordinated to society develop assessment system through dynamic analyzing on the ecosystem services value change by using of NPP. It is beneficial and helpful for some researchers do the similar field work to do further study.
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