| In recent years,as my country has incorporated ecological security into its homeland security system,it has also paid more attention to issues of ecological security and ecological protection.As the core carrier of ecological civilization construction,nature reserves are urgently needed for relevant construction and improvement.The nature reserve of Ningwu County includes a national nature reserve and three provincial nature parks,which play a particularly important role in the ecological protection of the Loess Plateau.In this study,Ningwu County Nature Reserve was used as the research area,and remote sensing images and land survey data were used as basic data to evaluate the ecosystem service value of the research area from 2010 to 2020,and summarize the ecological service value characteristics of different protected areas.Based on this,the land parcels extracted from the overlapping areas of each protected area are optimized and integrated,and then the service value of the integrated protected area is evaluated,and the integration result is verified,in order to provide a quantitative basis for the optimization of the protected area in the early stage of integration,and to provide the protection of the protected area.Sustainable development provides scientific support.research shows:The main land types of the forest park are woodland and arable land.During the study period,rivers and grasslands have changed drastically.The main land type transferred out is grassland,and the main land type transferred is woodland.The main land types of wetland parks are river and woodland,except the types of land outside the wasteland have changed drastically.Forest land and rivers are the main types of land that are transferred in,and cultivated land is the main type of land that is transferred out;the main land types of geoparks are woodland and grassland,and the cultivated land changes drastically.The main types of land that are transferred are grassland and woodland.The main transfer land is cultivated land.In terms of ecological service value evaluation,the total value of the three types of protected land has increased during the study period.The value of forest parks has increased the most by woodland,and grassland has decreased the most.The dominant function of ecological service value is to maintain biodiversity and climate regulation.The value of woodland and rivers contributes the most.The total increase in total service value is mainly due to the increase in the value of wasteland.Woodland flow;Wetland parks have the highest increase in value of woodland,and the lowest of arable land.The main function is hydrological regulation,and forest land and rivers have the highest contribution.The change in total value is mainly caused by the flow of grassland and arable land to woodland;the largest increase in value of geopark woodland the largest reduction in arable land,maintenance of biodiversity and hydrological adjustment are the leading functions of service value,and rivers and forest land contribute the most.The positive flow of arable land and wasteland to forest land increases the total service value.In terms of the evaluation of the ecological service value of the integrated protected land,the forest land in the integrated forest park has gathered,and the contribution to the total value has been further increased.The leading role of maintaining biodiversity and climate regulation has become more prominent,which is conducive to the overall coordination of forest land protection and protection.The relationship of utilization is to give full play to the ecological,economic and social benefits of the forest park;the integrated wetland park is the same as the original boundary,and the hydrological adjustment-led function is conducive to the restoration of river water resources and the ecological functions of the wetland,so as to realize the ecological resources.Sustainable development;the integrated geopark forest land is the main value-contributing land category.The main value-providing function is to maintain biodiversity,hydrological regulation and soil conservation,which is in line with the development characteristics of the geopark’s ecological service value.For future ecological development,Realizing the unification of ecological restoration,tourism development,and poverty alleviation plays an important role.This research introduces a more specific and more intuitive quantitative basis for the optimization and integration of nature reserves—eco service value assessment,and provides a new attempt and idea for realizing effective ecological protection and sustainable development of protected areas. |
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