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Landscape Pattern Process Analysis Based on the Geo-information Tupu in Jiaodong Mountain Area

Author: SongPing
Tutor: QiWei
School: Shandong Agricultural University
Course: Management of land resources
Keywords: Geological information map Land use dynamic change CCA order Environmental gradient Vertical differentiation
CLC: P901
Type: Master's thesis
Year: 2013
Downloads: 1
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Abstract


Mountainous area usually has complicated terrain conditions, leading to large space-time variability of ecological factor such as soil, sunshine, temperature and precipitation, which determines the complex opposite sex of space points of land-use landscape pattern. Research on the relation between environmental factors and land use landscape pattern is important to the rational use of land resources and landscape ecological design.Geological information map is based on the graphics thinking, adding the mathematical parameter description and knowledge rules description to the graphics, to combine form (graphics)-number (mathematical model)-manage (knowledge rales)(Shupeng Chen,2001). As a result, the theory and methods of geological information map can provide a new thinking theory and methodology for the research on landscape ecology.This research studied the change on environmental gradient of mountainous land landscape pattern with the change of sampling scale and time scale and environmental factors impact on the landscape distribution pattern of land use degree change with the aid of technical support such as ERDAS and ARCGIS software and the theory of landscape ecology on the basis of using CCA sorting method in establishing geological database of city Qixia.(1) From1987to1992, the cultivated land, grass slope land and unused land area is greatly reduced, garden plot and woodland area increased significantly. In this period the amount of woodland increasing is the largest, and the amount of cultivated land rolling out is the highest.In1992-1997, the biggest change of land-use types is still cultivated land, and mainly converted to forest land, garden land and slope land, followed by the grass slope-land and garden plot. In addition, the amount of mountain areas of unused also reduce, so does the waters areas influenced by climatic conditions.From1997to2003, area of forest land rolling out is the biggest, the cultivated land, garden land, slope land, construction land and water area had increased. Area change from2003to2010in map unit of transfer in slope land area, the largest mainly converted into farmland, forest land, garden land and construction land; Secondly, forest land and construction land, the area of cultivated land, garden land and grassland increased, but water and unused land area decreased. From atlas and cell sorting table, the land use between23years total variation characteristics of cultivated land area is greatly reduced, garden land, forest land and construction land area increased significantly, the waters area basic remains unchanged.(2) Studies have shown that in23years, Qixia has obvious temporal and spatial variation features of land using change. On the whole time:land and unused land is sharply reduced, garden land and construction land was significantly increased, the slope increases slightly with water area, woodland basic remains unchanged.(3)The research analyzed the space difference of land use landscape pattern and different contribution rate of environmental factors in different scales and the environmental interpretation distribution of land use pattern and spectrum analysis method based on the geological information and the transfer matrix of landscape type analysis land landscape pattern dynamic evolution regulation from1987to2010. To provide a scientific basis and reference for the rational use of mountain land resources by analyzing the influence to vertical mountain landscape pattern from terrain factor with the composite index of the extent of land use from three angles of elevation, slope and aspect.It is found by canonical correspondence analysis that there are significant differences of different environmental factors on the degree of influence of different land use types. Slope, elevation and topographic factors are important environmental factors that affect the distribution of land use landscape pattern environmental factors have scale effect to contribution rate of the landscape pattern distribution and it can be chosen intuitively the best scale between environmental factors and land use pattern.It can be found the environmental factor which can influence different land use types greatly analysis relations between seven kinds of land use types and environmental factors to guide the rational planning and utilization of land resources in the study area, which has important guiding significance to the agricultural structure adjustment. From sorting diagram it can also be found the space difference of land use landscape pattern revealing land-use landscape pattern distribution features of city Qixia, for the land use structure optimization and providing referential basis for the research of land use fragmentation.(4) On the vertical gradient, farmland and garden in plot Qixia mainly distributed in the hilly-gully region under300m, construction land are mainly concentrated in the region under200m, so below300m elevation area land use comprehensive degree is higher, and with the increase of elevation, the proportion of forest land, slope land and unused land is more and more big, the comprehensive land use degree is gradually disappearing.In2010, land use degree comprehensive index and index of1987is the same at trend, but higher than1987, especially in more than30-200m height and300m elevation area; in more than300m elevation area, the amount of garden area and woodland risen more than the amount of cultivated land and grass slope has decreased, and unused land decrease.

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CLC: > Astronomy,Earth Sciences > Physical Geography > General theory and methods > Landscape Architecture,regional theory
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