摘要
以环太湖区县1980年、2000年和2018年土地利用遥感数据为基础,采用当量因子法、景观格局指数、相关分析等方法,分析太湖沿岸五公里景观格局演变趋势,并对生态系统服务价值与景观格局的耦合作用进行研究。结果表明:近四十年来,研究区景观类型呈现耕地减少、建设用地增加的趋势。景观破碎化程度加深,连通性降低,景观格局趋向复杂化,景观结构稳定性减弱。耕地破碎且形状趋于复杂,建设用地面积快速增长并呈大面积连片分布态势。研究区生态系统服务价值总体呈降低趋势,水域景观对生态系统服务价值总量贡献最大。景观格局变化对生态系统服务价值影响明显,其中香农多样性指数、香农均匀度指标、蔓延度指数与生态系统服务价值高度相关。
Based on the remote sensing data of land use in the counties around Taihu Lake in 1980,2000 and 2018,the evolution trend of five kilometers of landscape pattern along the coast of Taihu Lake was analyzed by equivalent factor method,landscape pattern index and correlation analysis.The coupling effect of ecosystem service value and landscape pattern was studied.The results show:First the main trend of landscape types in the study area is the decrease of cultivated land and the increase of construction land.Second the degree of landscape fragmentation in the study area is deepened,the connectivity is reduced,the landscape pattern tends to be complicated,and the stability of landscape structure is weakened.The cultivated land is broken and the shape tends to be complex,and the construction land area is growing rapidly and showing a large area of contiguous distribution.Third the value of ecosystem services in the study area showed a decreasing trend,and the water landscape contributed the most to the total value of ecosystem services.Forth landscape pattern change has a significant impact on ecosystem service value,and Shannon diversity index,Shannon evenness index and contagion index are highly correlated with ecosystem service value.
出处
《城市问题》
CSSCI
北大核心
2021年第4期95-103,共9页
Urban Problems
基金
江苏省大学生创新创业训练计划2019年立项项目(201910332070Y)。
关键词
景观格局演变
生态系统服务价值
五公里缓冲区
太湖
evolution of landscape pattern
ecosystem service value
five-kilometer buffer zone
Taihu Lake
