临安区青山湖区域土地利用与景观格局时空变化研究  

Temporal and Spatial Changes of Land Use and Landscape Pattern in Qingshan Lake Region of Lin'an

作　　者：杜茗媛 舒美英 蔡建国[1,3] DU Ming-yuan;SHU Mei-ying;CAI Jian-guo(School of Landscape and Architecture,Zhejiang A&F University, Hangzhou, Zhejiang 311300;Jiyang College of Zhejiang A&F University Zhuji, Zhejiang 311800;Landscape and Architecture Institute Co.Ltd,Zhejiang A&F University,Hangzhou,Zhejiang,311300)

机构地区：[1]浙江农林大学风景园林与建筑学院,杭州311300 [2]浙江农林大学暨阳学院,浙江诸暨311800 [3]浙江农林大学园林设计院有限公司,杭州311300

出　　处：《陕西林业科技》2021年第5期28-34,共7页Shaanxi Forest Science and Technology

基　　金：国家自然基金项目(31270743)。

摘　　要：随着人类活动范围的日益扩张和城市进程的加快,了解土地利用和景观格局的变化对城市发展具有重要研究意义。选定杭州市临安青山湖区域2000、2005、2010、2015、2020年5个时期的Landsat遥感影像数据,利用ENVI5.3对研究区进行人工目视解译,定量分析近20年来的土地利用动态变化特征。研究表明:林地和耕地面积占比逐年减少,建设用地面积逐年增长,建设用地逐渐代替了林地成为优势景观类型;2010-2015年综合土地利用动态度变化最大,即此期土地类型转换最剧烈;耕地和草地的景观破碎化程度日趋严重,整体空间异质性和景观连接性增强,2010年景观类型最多样、最均衡,之后景观多样性指数下降,景观类型逐渐分布不均,景观结构亟待调整优化。青山湖今后应切实保护耕地和生态环境,对现有耕地和基本农田实行基本农田和标准农田保护,禁止自然资源和生态环境区域开发,保障土地资源可持续发展。With the expansion of human activities and the acceleration of urban development,it is of great significance to understand the changes of land use and landscape pattern for urban development.Based on the Landsat remote sensing image data of 2000,2005,2010,2015 and 2020 in the Qingshan Lake region of Lin'an,this paper applied envi5.3 to interpret the land use dynamic change in recent 20 years,and analyze the temporal and spatial changes of the landscape pattern of Qingshan lake region based on the landscape pattern index.Result showed:i)the proportion of woodland and cultivated land decreased year by year,and the area of construction land increased year by year.Construction land gradually replaced woodland and became the dominant landscape type;ii)during 2010-2015,the dynamic degree of comprehensive land use changed the most,indicating that the land type conversion was the most intense and the change was the largest;iii)the landscape fragmentation degree of cultivated land and grassland was becoming severe,the overall spatial heterogeneity was enhanced,and the landscape connectivity was enhanced.In 2010,the landscape types were the most diverse and balanced.After 2010,the landscape diversity index was declined,the landscape types were gradually uneven,and the landscape structure needed to be adjusted and optimized.The results can provide the basis for the optimization of land use structure and landscape pattern,and provide reference and suggestions for the development,construction and sustainable management of Qingshan Lake.

关 键 词：土地利用 遥感影像 景观指数 Fragstate 时空演变 青山湖区域 

分 类 号：X171.1[环境科学与工程—环境科学]