【作者】 王权； 李阳兵；

【Author】 WangQuan;Li Yang-bing;School of Geography and Environmental Science,Guizhou Normal University;

【机构】 贵州师范大学地理与环境科学学院；

【摘要】 揭示当前多因素驱动下岩溶槽谷区典型地貌单元土地利用变化的一般规律、山-槽土地利用变化的差异性和耦合作用具有重要的意义。基于2005年、2010年、2014年、2017年高清影像为数据源并结合实地调研对影像进行对比验证,数据解译精度在96%以上。通过对土地利用变化的土地动态度相关指标计算,揭示出了岩溶槽谷区山-槽的土地利用变化幅度、速率以及空间分布的共同特征与差异。结果表明:(1)随着时间的发展,岩溶槽谷区山-槽土地利用幅度与速度在三个连续阶段是;2014～017年>2010～2014年>2005～2010年且西部槽谷>东部槽谷>中部槽谷,槽的土地利用变化速率较山快且稳定。(2)岩溶槽谷区山-槽的土地利用空间分布的共同特征是:城镇用地、居民用地、水田主要分布于槽;山地早地灌木林地、有林地、草地、山地早地等主要分布于山上。由于山-槽自然环境的不同与社会经济的影响,从而形成了西中东部槽谷变化出现各自差异以及土地利用受到局限性。更多还原

【Abstract】 Under the current multi-factor driving,it is great significance to reveal the general rules of land use change in typical landform unit of karst valley area and the difference and couple effect of the land-use change in mountain ~ trough.Based on the high-resolution images of2005 year,2010 year,2014 year and 2017 year as the data source,which combined with field survey to verify the image,the accuracy of data interpretation is above 96%.By calculating the land dynamic index reveales that the common characteristics and differences in the land use change amplitude,rate and spatial distribution of the karst trough valley area.The conclusion show that:(l)With the development of time,in three successive stages when the mountain trough land use amplitude and rate are 2014-2017 years>2010-2014 years>2005-2010 years and the western > the eastern > the middle and also the rate of land use change in the trough is faster and more stable man the mountain.(2)The common characteristics of the land use spatial distribution in the karst trough valley area are that the urban land,the residential land and the paddy field are mainly distributed in the trough,and shrubland,woodland,grassland,dry land are mainly distributed on the mountain.there are showing individual differences and land use is limited in karst trough valley area due to the difference of the mountain-trough natural environment and the influence of social economy.更多还原