摘要
为掌握武威市经济与生态的可持续发展道路,以2000—2020年GlobeLand30土地利用/覆被数据为基础,通过单一土地利用动态度、综合土地利用动态度及土地利用转移矩阵等方法,研究了武威市土地利用/覆被时空变化特征,并结合气象数据明晰了土地利用/覆被变化的驱动机制。结果表明:2020年武威市土地利用类型以裸地为主,裸地面积为17628.2 km^(2),占武威市总面积的53.24%,主要分布在研究区的北部荒漠区;2000—2020年,武威市灌木地、林地综合动态度最高,表明两者稳定度较低,其次是人造地表、水体和冰川积雪,裸地、耕地、草地和湿地4种土地利用/覆盖类型在20年内动态度较低,相对比较稳定;2000—2020年武威市土地利用主要转移方向呈现耕地转入人造地表、林地转入草地、裸地转入耕地和人造地表的现象。研究得到武威市气温和降雨量对土地利用/覆被变化的影响相对有限,只对湿地、水体和林地等土地利用/覆被类型有一定影响,武威市土地利用/覆被变化的主要驱动力为社会经济因素,其中GDP、房地产投资、政府政策对土地利用/覆被类型的变化影响显著。
In order to grasp the sustainable development path of economy and ecology in Wuwei City,based on GlobeLand30 land use/cover data from 2000 to 2020,the spatiotemporal variability characteristics of land use/cover changes was analyzed through single land use dynamic attitude,comprehensive land use dynamic attitude and land use transfer matrix in Wuwei City.The meteorological data was used to clarify the driving mechanism of land use/cover change.The results show that in 2020,the land use type of Wuwei City is dominated by the bare land,with a area of 17628.2 km^(2),accounting for 53.24%of the total area,mainly distributed in the northern desert area of the study area.From^(2)000 to 2020,shrublands and woodlands in Wuwei City has the highest combined motility,indicating that both are less stable,followed by man-made surfaces,water bodies and glacial snow.And the land use/cover types of bare land,cropland,grassland,and wetland has low motility and are relatively stable over the 20-year period.From^(2)000 to 2020,the main land use transfer direction presents the phenomenon of the transfer of cropland to man-made surface,forest land to grassland,and bare land to cropland and man-made surface in Wuwei City.The study shows that temperature and rainfall have relatively limited effects on land use/cover changes in Wuwei City,and only have some effects on land use/cover types such as wetlands,water bodies and woodlands.The main driving forces of land use/cover changes in Wuwei City are socio-economic factors,among which GDP,real estate investment and government policies have significant effects on the change of land use/cover type.
作者
张治国
康鸿杰
ZHANG Zhi-guo;KANG Hong-jie(Gansu Institute of Natural Resources Planning and Research,Lanzhou 730000,China)
出处
《科学技术与工程》
北大核心
2023年第20期8579-8587,共9页
Science Technology and Engineering
基金
甘肃省自然科学基金(22JR5RA602)。
关键词
土地利用/覆被
武威市
转移矩阵
动态度
驱动力
land use/cover
Wuwei City
transfer matrix
dynamic attitude
driving forces
