Effects Of Land-use Change On Ecosystem Services In Agro-Pastoral Ecotone

Land-use change plays a decisive role in ecosystem services.In recent years,the land-use pattern of the agro-pastoral ecotone has undergone tremendous changes,brought great pressure to the ecological environment,at the same time,which had a certain impact on the ecosystem service.Therefore,the mechanism process of land use change affecting the ecosystem service function should be clarifying,development of optimal land-use planning to achieve sustainable management.To provide the basis for improve ecosystem environment and make ecosystem services more profitable for humanity.Based on the five periods of land-use image in 1976,1989,1998,2007 and 2014,this paper used the In VEST model and the RUSLE model to calculate the soil conservation,water retention and carbon storage.Uses economic data to make a statistical analysis of the number of livestock,crop yield and pork production.In the end,driven by the policy of returning farmland to forests and pastures,the influence of land-use change on ecosystem services was discussed.The main conclusions of this study are as follows:1.In 1976-2014 years,Wuchuan county land-use change obviously.The area of farmland showed a trend of increasing and then decreasing;the overall area of woodland showed an upward trend;the whole area of grassland decreased first and then increased;the area of u construction land changed with time,the area was increasing,showing an upward trend.2.Ecosystem supply services in the study area show different trends.Crop production showed an upward trend,and the number of livestock showed a downward trend.Pork production showed a decline trend after 2000.3.Soil conservation in the study area showed a gradual increase trend,and water retention decreased first and then increased.Overall,ecosystem regulation services showed an increasing trend after 2000.4.Ecosystem regulation services also have different change characteristics in the past 40 years.There is a synergistic relationship between carbon storage,water retention and soil conservation.There is a synergistic or trade-off relationship between water retention and soil conservation.