乌蒙山区土地利用变化及其对生态系统服务价值的影响

Land Use Change and Its Impact on Ecosystem Service Value in Wumeng Mountain Area

根据乐山市2010~2016年土地利用数据、气象数据和经济数据,并运用生态系统服务价值理论测算了研究区生态系统服务价值变化的情况。研究表明:2010~2016年期间林地、园地分别以1.45%、13.08%的变化率持续增加,耕地、牧草地、其他农用地、湿地面积均缓慢减少;生态系统服务价值由377.88亿元增加至382.35亿元,增长率为1.45%;由于林地和园地的生态系统服务价值系数较高,并且两者增加量远大于其他类型土地的减少量,因而各单项生态系统服务价值均为增长趋势,增长幅度较小。土地利用结构调整方向总体是科学合理的,土地利用生态效益明显提升。林地具有较高的敏感性,应切实加强林地资源保护与管理。

According to the statistical data of the land utilization, the meteorological and economic data in Leshan city during 2010~2016, by using the theory of ecosystem service value, the changes of ecosystem service value in the study area were estimated in this paper.The research showed that the change rate of woodland and garden land from 2010 to 2016 was increasing continuously with 1.45% and 13.08% respectively, and the cultivated land, grassland, other agricultural land and wetland were all decreasing slowly.The value of ecosystem services increased from 37.788 to 38.235 billion yuan, with the growth rate of 1.45%.Woodland and garden ecological service value coefficient was higher, and the increase in both was far greater than the decrease in other types of land, so the individual value of ecosystem services had an increasing trend with a small increase range.The land use structure adjustment direction was basically reasonable, and the land use ecological benefit was obvious.The forest land has high sensitivity, so the protection and management of forest land resources should be strengthened.