Dynamic Change Analysis of Urban Green Land in Jinan City Based RS and Geo-information Tupu

The three-period (1995, 1998 and 2003) remote sensing images in Jinan City, China are selected. And the information of green land, construction land, woodland and water body is extracted by using the image processing module of remote-sensing software and computerized interpretation module. Both the change table and transfer matrix table of land use area are analyzed by modeling module of remote-sensing software. Then, the Geo-information Tupu is obtained; and the temporal and spatial variation of land use in Jinan City is monitored and analyzed by Geo-information Tupu and transfer matrix. Result shows that land use structure change of Jinan City in the years 1995-1998 shows a transformation from green land to construction land. Area of green land circulating into construction land reaches 62.27 square kilometers, accounting for 25.84% of the initial green land. In the year 1998, areas of woodland and green land are reduced due to the urban expansion of Jinan City. However, with the enhancement of people's awareness of environmental protection, areas of woodland and green land gradually increase in the year 2003, which are still less than those in the year 1995.

Tupu methods of spatial-temporal pattern on land use change:a case study in the Yellow River Delta

Comprehensive study on land-use change of spatial pattern and temporal process is the key component in LUCC study nowadays. Based on the theories and methods of Geo-information Tupu (Carto-methodology in Geo-information, CMGI), integration of spatial pattern and temporal processes of land-use change in the Yellow River Delta (YRD) are studied in the paper, which is supported by ERDAS and ARC/INFO software. The main contents include: (1) concept models of Tupu by spatial-temporal integration on land-use change, whose Tupu unit is synthesized by "Spatial·Attribute·Process" features and composed of relatively homogeneous geographical unit and temporal unit; (2) data sources and handling process, where four stages of spatial features in 1956, 1984, 1991, and 1996 are acquired; (3) integration of series of temporal-spatial Tupu, reconstruction series of "Arising" Tupu, spatial-temporal Process Tupu and the spatial temporal Pattern Tupu on land-use change by remap tables; (4) Pattern Tupu analysis on land-use change in YRD during 1956-1996; and (5) spatial difference of the Pattern Tupu analysis by dynamic Tupu units. The various landform units and seven sub-deltas generated by the Yellow River since 1855 are different. The Tupu analysis on land-use in the paper is a promising try on the comprehensive research of "spatial pattern of dynamic process" and "temporal process of spatial pattern" in LUCC research. The Tupu methodology would be a powerful and efficient tool on integrated studies of spatial pattern and temporal process in Geo-science.

Characteristics of landscape information Tupu of the Yellow River swings and its subdeltas during 1855―2000

Based on the theories and methods of cartography on spatial pattern and temporal evolution in Geo-information Tupu (Carto-methodology in Geo-information, CMGI) and the quantitative measurements of pattern and process in landscape ecology, the methodology of landscape information Tupu in studying the swing process of the Yellow River (YR) over the Yellow River Delta (YRD) during 1855― 2000 has been demonstrated. The main content includes: (1) methodology of landscape information Tupu; (2) evolution process Tupu of YR rump channels; (3) evolution process Tupu of the 7 pieces of subdeltas in YRD during 1855―2000; (4) landscape information Tupu of the modern YRD and the current YRD; (5) landscape information Tupu of YR rump channels on the 7 pieces of subdeltas during 1855―2000; and (6) corridor-matrix landscape information Tupu by YR swings. The methodology of landscape information Tupu here is still primary but we hope that it could provide a new tool for exploring an integrated research on spatiotemporal approaches for landscape "pattern and process".

哈尼梯田土地利用空间格局及其变化的信息图谱研究

以云南省元阳县为例,建立土地利用空间格局及变化信息图谱,对其图谱特征进行分析。结果表明:土地利用时空演变征兆图谱更直观形象的揭示区域土地利用变化的基本模式,提供时空复合的表达方式;土地利用斑块形态与空间扩展图谱的建立应用空间格局研究中的相关概念和方法,将微观、宏观层次图形信息与变化过程结合;土地利用变化景观特征图谱建立以度量空间格局变化为目标的景观指数体系。

基于地学信息图谱的珠海淇澳岛土地利用格局分析

利用珠海淇澳岛1996、2003、2009、2013年4期高分遥感影像数据,通过遥感解译得到1996—2013年土地利用的基本情况,运用GIS技术及地学信息图谱基本理论,合成3个时段土地利用格局变化图谱,了解该区土地利用格局的时空变化.研究结果表明珠海淇澳岛在1996—2013年的土地利用发生显著变化:(1)从总体变化趋势来看,林地、建设用地的面积都有所增加.林地的新增面积最大,新增面积为492.30 hm^2,主要来源于滩涂与海域,集中分布在岛屿西北角;其次是建设用地,新增面积为143.38 hm^2,主要来源于裸地与林地.海域、滩涂与裸地的面积呈减少趋势,海域主要转为滩涂,滩涂主要转为林地,裸地主要转为建设用地.坑塘水面的面积变化起伏.(2)从格局变化的空间分布上看,虽稳定型占据主体地位,但岛屿西北角存在极大不稳定性.(3)从格局变化的时间分布上看,土地变化模式具有明显的阶段性,土地利用变化主要集中在1996—2009年,2009—2013年的用地格局趋于稳定.

基于国产高分影像的海岸带盐田和水产养殖区图谱特征分析

海岸带区域水陆相接,盐业和水产养殖业发展迅速。本文基于国产高空间分辨率卫星遥感影像,对海岸带盐田和水产养殖区进行了全面的分析,总结了盐田和水产养殖区地物的颜色、色调、大小、形状、纹理、位置等遥感影像图谱特征,以期为盐田和水产养殖区遥感监测提供技术支撑。

浙江省耕地利用转型时空演变特征分析

基于浙江省2000、2010、2020年3期土地利用数据,构建涉及耕地利用转型的图谱分析模型,利用ArcGIS 10.6软件揭示浙江省耕地利用转型的时空演变特征。结果表明,浙江省耕地利用转型以林地占补和向建设用地转出为主,空间上由杭嘉湖平原、杭绍甬地区、甬温沿海经济带向浙中盆地丘陵区呈“C”型集聚,“东占西补”特征明显;耕地利用转型数量和空间分离度增加,耕地面积“占大于补”,但占补缺口正在缩小;耕地利用转型以后期变化型(即变化发生在2010—2020年)为主,林地是耕地补充的主要来源,建设用地占用耕地问题严重。基于此,建议持续盘活存量、带动增量、应对变量,推动山水林田湖草系统治理逻辑下的耕地资源优化配置和土地利用空间正义,实现耕地补充和建设用地保障“双向平衡”,生态保护、粮食安全、发展空间“三位一体”。