摘要
基于辽东湾北部区1985、1993、2002、2014年4期遥感影像数据,并与相应土地利用/覆被变化(LUCC)的遥感解译数据相联系,评估生态系统服务价值(ESV)的动态演变.结果表明:(1)研究区的土地利用方式变化较明显,湿地和水系的面积不断减少,而水产养殖和建设用地面积逐渐增加;(2)研究区的生态系统服务价值总体上呈减少趋势,生态系统服务功能退化,其中,湿地和水系为主要代表的自然滨海湿地退化状况较明显;(3)研究区平均生态系统服务价值的等级差别较大,在空间上总体表现为由海岸滨海湿地及河流沿岸向内陆减少的趋势;(4)研究区域生态系统服务价值及其动态演化均呈现出显著的空间自相关性,并具有较强的高/低值聚集现象,但是自相关性与聚集程度均在弱化,即其空间分布正趋向于破碎化.
Based on the northern Liaodong Bay area 1985,1993,2002,2014,four remote sensing image data,and with the corresponding land use/cover change(LUCC)remote sensing data,evaluation of ecosystem services value(ESV)of dynamic evolution.The results show that:(1)The change of land use pattern in the study area is obvious,the area of wetland and water system is decreasing,while the area of aquaculture and construction land is increasing.(2)The overall value of ecosystem services in the study area shows a decreasing trend,and the ecosystem service function degrades.Among them,the degradation of natural coastal wetlands,mainly represented by wetlands and water systems,is more obvious.(3)The grade of the average ecosystem service value in the study area varies greatly,and the overall spatial performance is the trend of coastal wetlands and river coastal areas decreasing to the inland.(4)The research on regional ecosystem service value and its dynamic evolution shows significant spatial auto-correlation and strong high/low value aggregation,but the auto-correlation and aggregation degree are weakening,that is,their spatial distribution tends to be fragmented.
作者
闫晓露
郑欢
李洪飞
YAN Xiaolu;ZHENG Huan;LI Hongfei(Marine Economics and Sustainable Development Research Center,Liaoning Normal University,Dalian 116029,China;School of Geography,Liaoning Normal University,Dalian 116029,China)
出处
《辽宁师范大学学报（自然科学版）》
CAS
2020年第3期381-391,共11页
Journal of Liaoning Normal University:Natural Science Edition
基金
辽宁省哲学社会科学规划基金资助项目(L19CJY005)。
关键词
土地利用/覆被变化
生态系统服务价值
时空演变
空间自相关
辽东湾北部区
land use/cover change
ecosystem service value
spatial-temporal evolution
spatial auto-correlation
northern Liaodong Bay
