黄河三角洲新生湿地土地利用变化图谱

在陈述彭先生提出的地学信息图谱理论和方法基础上,构建了土地利用图谱模型,在黄河三角洲新生湿地四期土地利用数据提取的基础上,合成了土地利用系列图谱,分别是1956～1984年,1984～1991年,1991～1996年三个时序。本文从黄河三角洲新生湿地土地利用强度变化、土地利用结构变化和土地利用格局变化三个方面进行了土地利用变化图谱分析,为地学信息图谱在土地利用变化研究中的应用提供了典型案例和实证。

Tupu Analysis of Land Use Changes in the New-born Wetland of the Yellow River Delta (YRD)

The Geo information Tupu is a kind of methodology that is brought up by academician Chen Shupeng, supported by such advanced technologies as Remote Sensing (RS), Geographical Information System (GIS), Internet Communication, Virtual Reality and Cartography by computer, etc Based on the theories and methods of Geo information Tupu, the thesis puts forward series of Tupu Model on land use based on Tupu unit in the new born wetland of the Yellow River Delta (YRD) According to data from remote sensing and vector by ERDAS and ARC/INFO, four pieces of land use data are achieved By spatial and process integration in GRID on land use change of 1956,1984,1991,and 1996, three periods of land use change are defined by 1956～1984, 1984～1991,and 1991～1996 By analyzing three different ways of land use changes, which include changes in land use intensity, changes in land use structure and changes of distribution in the process of land use Tupu units, it provides typical applications of land use change analysis by the methods of Geo information Tupu It is composed of three aspects in Tupu analysis, which include spatial query in Tupu, ordinance in Tupu units and transfer matrixes of area and probability It analyzes land use changes in the three various temporal units The new born wetland (approx 85758 hm 2) in the Yellow River Delta (YRD) is located in the active river mouth in the East of the YRD, which is one separate part of the Nature Reserve in YRD During 1956 to 1996, land use intensity was arising then falling down to some extent since 1991 In land use structure, wetland and water body is the mainly usage during these period, but it tend to decline as a whole Pasture and farm land are arising greatly from wetland and water body Residential and industrial lands are the most stable type in land usage.Farm land is the second stable type in land usage.