摘要
为了探究阜平县生态风险,以2010年、2015年、2020年土地利用数据为基础,采用生态系统服务模型、景观生态风险模型,对二者的时空演变特征进行了定量分析,通过Z-score标准化划分了4类生态分区,揭示了阜平县生态环境时空演变特征。结果表明:(1)6种地类均有不同程度的改变,耕地增加最多,草地减少最多。高价值区主要分布于夏庄乡、龙泉关镇西部等林地、草地植被覆盖度高、水热条件较好的地区。阜平县以调节服务为主,且林地提供价值最高。(2)阜平县以较低生态风险区为主,占总面积的50%以上。在空间上呈“东南高、西北低”的分布特征。高生态风险区分布于北果园乡、王林口镇等区域,此区域人口数量多、景观类型细碎、零散分布。(3)4类生态分区变化程度较小,表明阜平县处于较为稳定的状态,高生态系统服务价值—低生态风险区(Ⅳ)占比最高,低生态系统服务价值—低生态风险区(Ⅲ)占比最低。通过生态分区研究,可为防范和降低区域生态风险与协调人地关系提供理论基础。
In order to explore the ecological risk in Fuping County,based on the land use data in the year of 2010,2015 and 2020,with the help of ecosystem service model and ecological risk model,the temporal and spatial evolution characteristics of ecosystem service value and ecological risk were quantitatively analyzed in the study.The temporal and spatial evolution characteristics of the ecological environment in Fuping County were revealed and classified by Z-score standardization through four ecological zones.The results showed that:(1)The six land use types had changed in varying degrees,and cultivated land and grassland had the largest proportion of increase and decrease.The high value areas were mainly distributed in the areas with high vegetation coverage and good water and heat conditions of woodland and grassland in the west of Xiazhuang Township and Longquanguan Town.Ecosystem services were mainly regulatory services,and woodland provided the highest ecosystem services value.(2)On the whole,the study area was dominated by low ecological risk area,accounting for more than half of the total area.With a spatial distribution characteristic of high level in southeast and low level in northwest.High ecological risk areas were distributed in densely populated areas,such as Beiguoyuan Township and Wanglinkou Town,where landscape types were fragmented and scattered.(3)The change degree of the four types of ecological zoning was small,which indicating that the study area was in a relatively stable state,high ecosystem service value-low ecological risk(Ⅳ)accounted for the highest proportion and low ecosystem service value-low ecological risk area(Ⅲ)accounted for the lowest proportion.The research of ecological zoning could provide a theoretical basis for preventing and reducing regional ecological risks and coordinating the relationship between human and land.
作者
徐维艺
阚瑶川
王国文
王一晴
张长春
XU Weiyi;KAN Yaochuan;WANG Guowen;WANG Yiqing;ZHANG Changchun(College of Land and Resources,Hebei Agricultural University,Baoding 071000,China;College of Resources and Environmental Sciences,Hebei Agricultural University,Baoding 071000,China)
出处
《林业与生态科学》
2022年第1期46-56,共11页
Forestry and Ecological Sciences
基金
河北农业大学科研发展基金计划项目(JY2019011)。
关键词
生态系统服务
生态风险
生态分区
阜平县
ecosystem services
ecological risk
ecological zoning
Fuping County
