摘要
基于GIS和遥感技术,构建生态系统评价指标体系和评估模型,对不同水土保持措施下长汀县2005—2016年生态系统服务价值时空变化进行了评估。结果表明:长汀县2005—2016年生态系统服务价值空间上呈现四周高、中间低的分布趋势,4个阶段生态系统服务价值分别为101.08、88.39、109.14、134.11亿元,大气平衡调节价值平均占比35%,水源涵养价值占比15%,土壤保持价值占比21%,营养循环价值占比4%,有机质生产价值占比25%,各项生态系统服务价值呈现先减少后增加的趋势。在不同水土保持措施下,长汀县生态系统服务价值时空变化差异明显,濯田镇、三洲镇、河田镇和策武镇治理效果良好,生态系统服务价值增加显著,但山地植被覆盖有减少趋势。建议在山地丘陵地区实行草灌乔混交治理模式、小穴播草模式和老头松改造模式,并在破碎的崩岗裸露斑块区修建排水沟、挡土墙和沉沙池等水土保持工程设施;在林下套种适宜的植物,加快坡改梯进度,并实行分工合作制;在日常生产建设过程中注重绿化,防止水土流失,严格实施防止水土流失措施与主体工程同时设计、同时施工、同时投产使用的三同时制度。
The ecosystem evaluation index system and evaluation model were constructed based on GIS and remote sensing,and the temporal and spatial changes of ecosystem service values in Changting County from 2005 to 2016 were evaluated under the impacts of different soil and water conservation measures.The results showed that the ecosystem service values of Changting County spatially presented a trend of high around and low in the middle from 2005 to 2016,and the ecosystem service values in the four stages were 10.108 billion yuan,8.839 billion yuan,10.914 billion yuan and 13.411 billion yuan,respectively.Atmospheric balance value accounted for an average of 35%,water conservation value accounted for 15%,soil conservation value accounted for 21%,nutrient recycling value accounted for 4%,and organic matter production value accounted for 25%.The values of various ecosystem service showed a trend of first decreasing and then increasing.Under different soil and water conservation measures,there were significant differences in temporal and spatial changes of ecosystem service values in Changting County.In the towns of Zhuotian,Sanzhou,Hetian and Cewu,the governance effect was good,and the ecosystem service values were increased significantly,but the vegetation coverage of mountainous areas tended to be decreased.It was suggested to implement the modes of grass shrub arbor mixed management and old pine rehabilitation in mountainous and hilly areas,and to build drainage ditches,retaining walls and sand basins in the broken bare area of collapsed hills.Besides,interplanting suitable plants under the forest,speeding up the transformation of sloping fields into terraces and implementing the system of division of labor and cooperation were also needed to be considered.In the process of daily production and construction,it was important to pay attention to afforestation,prevent soil erosion,and strictly implement the three-simultaneous system of design,construction and operation of soil and water conservation projects.
作者
王培俊
刘旗
孙煌
林晓岚
范胜龙
WANG Peijun;LIU Qi;SUN Huang;LIN Xiaolan;FAN Shenglong(School of Public Management,Fujian Agriculture and Forestry University,Fuzhou 350002,China;College of Resources and Environment,Fujian Agriculture and Forestry University,Fuzhou 350002,China)
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2021年第5期219-228,共10页
Transactions of the Chinese Society for Agricultural Machinery
基金
福建省自然科学基金面上项目(2019J01397)。
关键词
生态系统服务价值
土地利用/覆盖变化
水土保持
长汀县
遥感
地理信息系统
ecosystem service value
land use and land cover change
soil and water conservation
Changting County
remote sensing
geographic information system
