摘要
以下辽河平原为研究对象,选取1980年、2010年和2018年Landsat TM/ETM+OLI卫星图像进行解译,得到3期土地利用数据,定量分析下辽河平原近40年土地利用时空变化特征。结合地形、交通通达度及限制转化因子采用FLUS(Future Land Use Simulation)模型对流域未来土地利用变化情景及景观格局进行了预测。结果表明:1980-2018年水田、林地、草地、沼泽面积均减少,其中水田面积减少量最大,占比减少了8.59%,旱地、水域和城镇的面积均有所上升,旱地的增长面积最大,占比增加了6.19%;水田、林地、水域转入为旱地面积最大,旱地转出为建设用地面积最大;1980-2018年景观格局发生了较大变化,景观的破碎化程度降低,斑块之间的连通度、聚集程度升高,土地利用的集约化程度增大;2018-2040年,下辽河平原建设用地和水田的变化面积最大,城市化过程更加显著,景观的多样性及空间异质性降低,人类对环境的干扰能力变大。
Xialiaohe Plain was taken as the research object.Landsat TM/ETM+OLI satellite images in 1980,2010 and 2018 were selected for interpretation to obtain three periods of land use data.The spatial and temporal change characteristics of land use in the Xialiaohe Plain in the past 40 years was analyzed quantitatively.The future land use change scenarios and landscape patterns of the watershed were predicted by FLUS(Future Land Use Simulation)model based on topography,transportation accessibility and limiting conversion factors.The results showed that:The paddy field,woodland,grassland and marsh decreased from 1980 to 2018,among which the paddy field decreased the most,and its proportion decreased by 8.59%.The dry land,water area and construction land all increased,and the dry land increased largest,accounting for 6.19%.The paddy field,woodland and water area converted to dry land was the largest,and the dry land converted to construction land was the largest.The landscape pattern changed mostly from 1980 to 2018.The degree of landscape fragmentation decreased,the degree of connectivity and aggregation between patches and the degree of land use intensification increased.From 2018 to 2040,the area of construction land and paddy field in the Xialiaohe Plain will change mostly,and the urbanization process will be more significant,and the diversity and spatial heterogeneity of landscape will decrease,and the ability of human to disturb the environment will increase.
作者
吕乐婷
杨勇
姜俊超
乔皓
白少杰
LYU Leting;YANG Yong;JIANG Junchao;QIAO Hao;BAI Shaojie(School of Geograpgy,Liaoning Normal University,Dalian 116000,China)
出处
《地理信息世界》
2021年第5期73-78,共6页
Geomatics World
基金
国家自然科学基金项目(41701208)。
