| Spatial correlation is an essential property for the physical existence of geographicalissues. Features among geographical issues demonstrates interdependency, interaction,influence and mutually effective. It is defined as the first law by Dr. A. Tobler, who isa scientist of the Science Institute of America; he also indicates that all issues andphenomena illustrate interdependency in terms of space. Furthermore, suchinterdependency degree decreases with the increasing distance. Therefore, it hasmagnificent sense in both theoretical and practical aspects to investigateinterdependency patterns among geographical issues.This paper uses the spatial spawn of Shiyang River Basins as a research target,which treats interpretation of remote sensing images of year1987,2000and2010asbasis, by applying remote sensing, GIS and spatial statistic analysis, the fundamentalcorrelation pattern of settlement of spatial spawn in Shiyang River, which in terms ofboth micro and macro can be achieved through analyzing internal and externalrelationship of settlement:1. Features of land transfer of Shiyang River BasinsSetting up land transfer matrices for1987-2000and2000-2010of Shiyang RiverBasin respectively, we can tell that the agriculture land transfer is the most obviousphenomenon between year1987and2010, by regarding2000as a middle points, itfirst increases and then decreases, the agriculture land has lost181.63km2in general.Moreover, land for construction keeps increasing, it is more and more obvious fromyear2000to2010, it increases12.95km2per year. Grass and forest land varies notthat much compared with former two.2. The feature of distribution of settlement and expiation in Shiyang RiverBy analyzing relationship between settlement of Shiyang River and related factors,and spatial distribution of social factors, it can be concluded that spatial distribution ofsettlement mainly concentrates in altitude of1294-1635m, slope smaller than2°,NDVI at0.1–0.58, average annual rainfall is145-220mm, population density is175-200person/km2, economy density is2200~9500K/km2, spatial distribution ofsettlement follows major roads and water systems, in general, the spatial distributionof settlement illustrates obvious axis distribution characteristics in Shiyang River. 3. Spatial evolution feature of settlement in Shiyang RiverThe driving elements of spatial spawn of Shiyang River Basins keep varying, thehighest spawn rate is always located two major city fields. Expansion of settlementspace has not yet formed a continuous expansion of the space axis. While the use ofsemivariogram for its settlement space variation (difference) measure, expansion ofsettlement space is distributed slow expansion to the gathering space expansion of thetransformation.4. The confirmatory spatial data analysis of expansion of settlement in ShiyangRiverStudies have shown that the distribution of settlement in Shiyang River has certainconvergence characteristics of the overall intensity; the intensity of settlementexpansion is associated in terms of space, the use of the CSDA technology whileintroducing three convergent spatial econometric model to carry estimation andtesting, found that from1987to2000the distribution of settlements has related withits own surrounding ones, the autocorrelation from2000to2010of the distribution ofsettlement may come from its data error in terms of spatial autocorrelation. |
