灵丘县土地利用变化对生态系统服务价值的影响

Impact of land use change on ecosystem service value in Lingqiu County

关键词:  生态系统服务  土地利用变化  乡村振兴  脱贫

Key words:  ecosystem service value  land use change  rural revitalization  poverty alleviation

摘要:

为评价灵丘县土地利用变化对区域生态系统服务价值的影响，采用当量因子法分析2010—2016年该县土地利用及其生态价值的时空变化。结果表明：1）灵丘县土地利用变化幅度较小，总面积不变的情况下，建设用地增加163.91 hm²，增加最多；草地减少137.92 hm²，减少量最大； 2）灵丘县生态系统服务价值达30亿元以上，7年间生态价值总体有稍微下降趋势，共减少667.02万元，水域生态价值减少幅度最大，减少384.24万元；3）耕地、建设用地和其他用地与生态系统服务价值呈负相关，水域、林地、园地、草地及未利用地呈正相关。总体上，灵丘县土地利用未对生态环境造成明显破坏，但也不能忽视在经济发展过程中人类的生活方式对环境造成的影响，应该进一步控制建设用地面积增长，保护生态用地，积极探索基于生态保护的生态资产运营模式和机制，实现社会-经济-生态效益可持续发展。

Abstract:

To evaluate the effect of land use changes on the value of ecosystem services (ESV) in Lingqiu County,Shanxi Province,this study analyzed the temporal and spatial changes of land use and ESV from 2010 to 2016 using the method of evaluating the value equivalent factor in unit area.The results showed that:1) Land use change in Lingqiu County was small.The area of construction land and grassland changed a lot compared with other land use forms,which increased by 163.91 hm² and decreased by 137.92 hm²,respectively.2) The total ESV of Lingqiu County was more than 3 billion yuan at present,though it declined slightly over the past 7 years,which was reduced by 6.67 million yuan and mainly caused by the reducing of water ecological value;3) ESV was positively related to waters,forest,garden plot,grassland,unutilized land and negatively related to crop land,construction land and other land.In general,land use in Lingqiu County did not cause significant damage to the ecological environment.However,the environmental impact could not be ignored because of the human activities.In conclusion,it is necessary to further optimize the growth of construction land,protect ecological land and actively explore the ecological asset operation models and mechanisms based on the ecological protection,and finally achieve the society-economy-ecology's sustainable development.