| Human-induced land use/cover change(LUCC)has significant effects on the climatic and ecological processes at both global and regional scales.It is an important driving force of global environmental change and has been one of the hot topics of international concerns.Since the modernization started after industrial revolution,the expansion of built-up areas(construction land)profoundly changed the status of LUCC and made the landscape of urban areas become a notable feature of a certain region.The changes of lifestyles,ideas and the global issues of resources,environment and ecology become more and more obvious because of construction land.The research on LUCC of historical period is an important part of LUCC international global research program.Limited by the available data,reconstruction of historical built-up areas confronts with some difficulties.So the existing research object rarely involved construction land on historical time.But there is still room for improvement in full extent of the reconstruction object,quantify of key factors,and precision of space analytical.Therefore,establishing the method of a more effective and comprehensive data recovery of construction land on historical time and producing a precision spatial data sets,which is consistent with the changes of regional construction land on historical time has its certain sense.This study chooses the construction land on historical time section as the research object,and follows the ideas of spatial pattern reconstruction under the control of data recovery.Supported by the data of historical records,modern statistical and natural resources,the spatial distributions of construction land(urban land and rural settlement land)of the typical time section in the past 200 years of Jiangsu Province with resolution of 200m×200m are finally established.We recovery the data of urban land by using data including the ancient city wall,town boundary on historical period(1820),and population,per capita land scale,society and economy on contemporary periods(1911,1936 and 1952).At the same time,we establish the data of rural settlement land by using data including population,per capita living scale,society and economy.Combining with the data set of land use interpreted by remote sensing data of(1985),we reconstruct the spatial pattern of construction land under certain assumptions including controls of quantity,boundary,suitability,and continuity.Ultimately,the results are verified by trend test?correlation test and quantification test.The main conclusions of this study are as follows:(1)The areas of construction land in Jiangsu Province are 963.46km~2(1820),1043.46 km~2(1911),1672.40 km~2(1936),1980.34 km~2(1952)and 10687.20 km~2(1985).(2)Land use suitability is used as the indicating factor in space reconstruction.The characteristic of continuity of land is achieved by python.Spatial pattern of construction land in Jiangsu on historical time section(1820?1911?1936?1952)are reconstructed on the basis of the elements of historical land use and the data set of land use(1985)interpreted by remote sensing.The spatial distribution of construction land has the characteristics of closing to water body and the main road.Meanwhile construction land expands with the effect of settlements,polarization and diffusion(3)The reconstruction results of construction land of the typical time section in the past 200 years of Jiangsu Province are proved to be rational according to the result verifications,which include the trend test of change process of urban land,the coordination analysis of construction land and production,the analysis of settlements' amount and spatial pattern?... |
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