摘要
以兰州市为研究对象,采用2000年、2005年和2010年的土地成果资料,系统分析了全市近10a的土地利用动态变化。选取土地动态度、土地利用程度、土地利用结构多样性、优势度和均匀度5个指标,定量评价兰州市土地变化的方向和速度及土地利用空间格局的演变。结果表明:2000—2010年兰州市土地利用结构发生了显著的变化,农用地减少,建设用地和未利用地增加;从土地利用速度及土地利用程度来看,全市土地利用仍处于调整期;土地景观格局模型表明兰州市土地多样性指数和均匀度减少,土地优势度指数呈逐渐增加趋势,土地空间格局的变化与经济发展、种植结构密切相关,人类活动是导致其变化的根本原因。
Based on land data derived from 2000,2005 and 2010,the land use dynamic change of Lanzhou City in recent 10 years was systematically analyzed.By using land dynamic degree,land use degree,land use structure diversity,dominance and evenness,quantitative evaluation of changes of Lanzhou City land in the direction and speed and the evolution of land use spatial pattern were carried out.The results showed that land use structure in Lanzhou City had changed significantly from 2000 to 2010,agricultural land reduced,however,construction land and unused land increased;with respect to land-use speed and land use degree,land use in the city was still in a period of adjustment;land landscape pattern model showed that the diversity index and evenness of Lanzhou City land had reduced,but land dominance index has increased gradually;the change of land spatial pattern was closely related to economic development and cropping structure,the true reason of land use patter change of Lanzhou City was due to human activities.
出处
《水土保持研究》
CSCD
北大核心
2013年第3期231-236,共6页
Research of Soil and Water Conservation
基金
国家公益性行业科研项目(201211050-04)
重点区域土地生态状况调查与评估(DCDJ12154-01)
