Study On Optimization Of Land Use/Cover In Changbai Mountain Area Based On Ecosystem Services Dynamic

There is a complex relationship between man and nature.Since the sustainable development concept was put forward,many scholars have done a lot of research to make rational use of natural resources.To achieve the goal of harmonious development between man and nature.The first priority for achieving sustainable development in the region is development.It is important not only to meet the needs of contemporary society for economic development,but also to ensure the sustainable use of natural resources and that the natural environment is not destroyed.This paper takes Changbai Mountain area as the research area.Having studied land cover changes and their imaging factors in the cities and counties in 2000,2010 and 2015.Through simulating four ecosystem services:food supply,water production,carbon stocks and habitat quality.Having analysed the changes in ecosystem services and their relationship to land cover changes during the period 2000-2015.Finally,the CA-Markov model is used to simulate the landscape pattern in 2030 under three development scenarios.To evaluate the changes of ecosystem services in three scenarios and to optimize landscape patterns in the optimal development scenario.lt provides scientific reference and opinions for the ecological environmental protection and sustainable development of Changbai Mountain area.The findings are as follows:(1)The area of forest land and construction land in the research area continued to increase between 2000 and 2015.and the area of other land cover types continued to decrease,and the changes were mainly concentrated between 2000 and 2010.There is not much difference in the attitude of construction land in the two periods,while the others are larger than the later period.From the perspective of changes,the area of farmland in Baishan City,Tonghua City,Tonghua County,Linjiang City,Jingyu County,Fusong County and Huinan County has decreased and the area of forest increased.In the later period the area of farmland increased and the area of forest decreased.Tumen City,Yanji City,Antu County,Hunchun City,Wangqingxian City and Dunhua City's urban expansion early,In the later period the area of farmland decreased and the area of forest increased.Other cities and counties have not changed significantly.Land cover changes in most of the cities and counties in the research area between 2010 and 2015 were more intense than in 2000-2010.(2)Distance from administrative centers and roads has an important influence on the distribution and change of land cover.The closer to the administrative center,the more obvious the increase in construction land and the more suitable for distribution.Farmland and forest are on the conversely.The closer to the road,the larger the proportion of construction land and farmland,the more suitable for distribution.Forest is the opposite.Others are not obvious.The lower the elevation,the more suitable the distribution of construction land,wetlands and farmland.Forest is the opposite.The smaller the slope,the more suitable the distribution of construction land,wetlands and farmland,the opposite of forest.The farther away from the river,the larger the proportion of forest land,the smaller the proportion of farmland,wetlands and construction land,while the others are not obvious.(3)The research area in the period 2000-2010 and 2010-2015,the food supply services is increasing.Carbon stocks decreased in the early stages and increased in the late stages.Overall decrease.Early improvement of habitat quality and it got worse later.Overall getting worse.Water production increases in the early stages and decreases in the later stages.Overall decrease.Inseparably linked to changes in precipitation.There is a positive correlation between changes in water production and changes in carbon reserves.Food supply is negatively correlated with water production,carbon reserves and habitat quality.(4)The model simulation Kappa coefficient is 0.8892.The simulation is better.Simulation of landscape patterns under three scenarios in2030.It is found that the change of land cover is close under ecological protection and planning development.The area of farmland decreased,the area of forest and wetlands increased.Construction land growth is slow under protection scenario.Construction land area increased by about 14.7 01%under the planning development scenario.The area of farmland and construction land under the rapid development scenario has grown significantly.Mainly to occupy forest land.Assessment of changes in ecosystem services in the three scenarios in 2030 in the context of the four ecosystem services for 2015.Shows that ecosystem services are optimal in ecological conservation scenarios,the second is planning development scenario,it s less significant change than 2015.The worst is over-exploitation scenario.Tonghua city and yanbian state should strictly control the cultivation of arable land and urban expansion,increase the strength of returning farmland to forest and wetland.Baishan city's urban development space is insufficient,we must focus on internal optimization and adjustment,It's ecological environment is pretty well,we must strengthen the protection of natural forests.