| Nowadays,ecological and environmental problems are becoming increasingly prominent.Social and economic development and ecological security are contradictory and unified interrelated bodies,which are mutually opposed and transformed.Land is the main carrier of terrestrial ecosystem,and the change of its utilization mode will inevitably lead to the change of its structure to the ecosystem,thus affecting the regional ecological security.Research according to the way of land use,the estimation of ecosystem service value,make "hills and green" monetization,to become visible "jinshan silver",analysis the influence of land use change on ecosystem service value,in order to maintain regional ecological security,the system of regional sustainable utilization of land resources and ecological civilization construction,ecological protection is of important value.As a typical arid region,xinjiang has extremely fragile ecological environment.It is an arduous and urgent task for xinjiang to maintain its ecological security,achieve regional sustainable development,build a "beautiful China" and promote regional coordinated development.Therefore,this paper selected as the study area in xinjiang,the data for the region in 2007-2017 area of land use change data,from the area of each land use type change,change rate and utilization degree and the use structure of land use change is analyzed,and reveals the problems existing in the process of land use change and the analysis of the cause of land use change.In addition,with reference to thank heights on the ecosystem service value assessment system,build the ecosystem service value assessment system in xinjiang,including the construction land ecosystem service value coefficient of determination and introduce adjustment coefficient to modify the model,get in line with the actual situation in xinjiang ecosystem services value evaluation model;The sensitivity index was introduced to verify the accuracy and effectiveness of the ecological service value coefficient,and to test the reliability of the ecosystem service value in xinjiang.Finally,the value of ecological services in xinjiang is obtained through the evaluation model,and the contribution rate of the variation of ecosystem services value is introduced to reveal the internal correlation between land use change and ecosystem services value.The countermeasures and Suggestions to promote the rational utilization of land resources and the protection of ecological system are put forward.This study can provide ecological cost data for the formulation of land resource planning and utilization and the decision-making of economic activities,and provide reference opinions for the protection,governance and ecological civilization construction of the ecological environment.The main conclusions are as follows:(1)in this paper,land use change in xinjiang is quantitatively analyzed by calculating indexes.Through the analysis,it can be found that in the current land use types in xinjiang,the unused land area is the largest,with 96.2965 million hectares,accounting for more than 57% of the total area of xinjiang.From the change trend ofvarious land use types in xinjiang during the study period,it can be seen that the area of cultivated land,garden land,woodland,construction land and water area presents an increasing trend,while the area of pasture land and unused land presents a decreasing trend.In terms of growth,the forest area increased by as much as2,266,700 hectares,followed by the cultivated land area which increased the most and the unused land which decreased the most,which decreased by 2.4214 million hectares.From the perspective of change rate and dynamic attitude,among the seven types of land use,the growth rate of garden area is the largest,reaching 118.65%,maintaining the annual growth rate of 11.87%,and the change rate is the fastest,which is consistent with the development direction of agricultural economy in xinjiang in the past.Secondly,the rapid growth of forestland area is the achievement of ecological and environmental protection in xinjiang.(2)evaluate and analyze the ecosystem service value of xinjiang through the ecosystem service value assessment model.Through the evaluation and analysis,it is found that the value of ecosystem services in xinjiang shows a growing trend during the study period,from 777.931 billion yuan in 2007 to 813.685 billion yuan in 2017,an increase of 35.754 billion yuan,which indicates that xinjiang has made certain achievements in environmental protection and governance.Different types of land use have obvious changes in the value of ecosystem services.From the perspective of growth,the largest increase in the value of ecosystem services is the forest ecosystem,whose ecosystem service value has increased by 38.350 billion yuan.Secondly,the added value of ecosystem services is the largest value of water ecosystem services;In terms of growth rate,the value of ecosystem services in the garden is the fastest growing,with a growth rate of 118.65%.The value of grassland ecosystem services accounts for 50% of the total value of ecosystem services in xinjiang,indicating that the grassland ecosystem and the total value of ecosystem services in xinjiang are closely linked.The ecosystem of xinjiang plays an important role in water conservation,biodiversity maintenance and soil conservation.Therefore,in the future process of environmental protection and governance development,attention should be paid to the strengthening of these three ecosystem services. |
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