摘要
根据杭州市的城市发展速度、特殊的地理位置和辐射腹地的地形结构,应用地理区位空间原理,分析了杭州市城市扩建中诱发水土流失的空间分布特点。(1)以市区为中心,向西呈扇状辐射,辐射圈带的宽度窄,过渡快;(2)层状地形面和2条主公路将扇状带分割呈网格状圈带;(3)环境保护高效带与建筑活动集中带突变明显;(4)建筑材料集中获取带是水土流失的突发带;(5)土地利用多变的城市菜篮子地逐渐向坡地移动,是诱发水土流失的主要潜在策源地。
According to the rate of economic development and the characteristics of geographic location and topographic structure of Hangzhou city, the spatial distribution characteristics of soil and water loss caused by urbanization construction are analyzed. The conclusions are as follows: (1) Taking city area as a center, the influence circle zones of urbanization construction expand toward west at fanshaped. The width of influence circle zone is narrow; (2) The terrace topographic structure and two highways divide fanshaped influence circle zones into checked net circle zones; (3) The transition is very sudden from the good results zone of protecting environment to the concentrated zone of construction; (4) The providing zone of building materials is the main occurring zone of soil and water loss; (5) The vegetable plots of various utility ways are main potential source of soil and water loss because these vegetable plots move toward slope land step by step.
出处
《水土保持通报》
CSCD
北大核心
2002年第6期20-22,25,共4页
Bulletin of Soil and Water Conservation
基金
浙江省自然科学基金项目资助 (40 1 0 0 5)
关键词
城市扩建
水土流失
空间地理场
杭州市
Hangzhou city
urbanization construction
soil and water loss
spatial geographical region
