海河流域土地利用变化图谱分析(英文)

[目的]定量探求海河流域土地利用类型转换、变化强度与空间分布规律,以期为该地区土地利用的科学管理提供依据。[方法]在遥感技术与地理信息技术支持下,解译并绘制了研究区 40 年(1970~2010 年)5 期(1970 年、1980 年、1990 年、2000 年和 2010 年)的土地利用图,并以此为基础进行空间叠加构建了土地利用变化图谱、过程图谱、涨势图谱和演变模式 4 种图谱,分析了土地利用格局变化规律。[结果]整体上看,耕地转化为建设用地是40 年来海河流域最主要的土地利用变化特征;非稳定区域面积占到 35%,海河流域土地利用变化剧烈,加强土地科学管理十分必要;1980～1990 年期间各土地利用类型新增转化均最小,形成了增量波动低谷,表明在此时期土地利用类型之间转化最为平缓。[结论]该研究结果表明与常规转移矩阵法相比,地学信息图谱方法在土地利用变化分析方面有着明显优势,能够展示兴趣区的空间位置分布,表现出多维空间信息。

Geo-information Tupu Analysis of Land Use Change in Haihe River Basin

[Objective] This study was to provide basis for the scientific management of land use in Haihe River Basin(HRB) through the quantitative exploration of the land use conversion,changes of intensity and spatial distribution in this region.[Method] With the support of remote sensing technology and geographic information technology,the land use maps of the study area in 40 years(1970-2010) were interpreted and plotted.Four kinds of tupu,namely,land use change tupu,process tupu,arising tupu and evolution mode tupu were built through the spatial overlay of the land use maps to analyze the change rules of land use patterns.[Result] The conversion of arable land to construction land was the main characteristics of land use changes in HRB for the 40 years;the area of non-stable region accounted for 35% of the total,indicating that the land use changed remarkably,thus,it was necessary to strengthen the scientific land management in HRB;the new conversions to all land use patterns were all the lowest in 1980-1990,indicating that land use changed slowly during this period.[Conclusion] The results indicate that,compared with conventional transfer matrix method,geo-information tupu has obvious advantage in analyzing land use changes that it can demonstrate the spatial distribution of interest region,display the multi-dimensional spatial information.