| Under the background of new-type urbanization,there appears hollow villages and potential extinction risk of rural areas gradually.Corresponding researches have to be done.To scientifically predict and judge the development trend and possible directions for different kinds of villages,apart from doing researches on their current situation,there is a need for intensive research on their longitudinal evolution.Besides,with the development of information technologies,especially 3 S technology,the rise and application of interdisciplinary research and new-type software technologies have offered new ideas for rural study in China.Based on differences of their main driving forces,3 categories,totally 9 administrative villages,are selected as research objects in this research.Taking the statistical and geographic information data gained in field research as the basic data sources,the current situation of rural spatial morphology and its evolution in recent decade are quantitatively studied with the application of software technologies and methods in other related disciplines,such as ArcGIS,ENVI and AHP,etc.Specific contents are as follows:Firstly,quantitatively evaluating the rural spatial morphology.8 kinds of driving factors are quantitatively classified based on ArcGIS or charts.Then weights of 8 driving factors in the evolution process are calculated with the method of AHP and are used as coefficients in the overlay analysis process of 8 quantized drawings or charts.And final grade distribution drawings of 9 villages are gained and interpreted to gain development advantages and disadvantages of 3 types of villages.Secondly,quantitatively studying the evolution of rural spatial morphology.Rural spatial morphology is defined as the combination of intangible social economic morphology and tangible material spatial morphology in this research.Thus,there are mainly two parts in the process of quantitatively study on its evolution.For the former,the population density and per capita net income are used as evaluating vectors.And evaluation trends of different villages are interpreted at this level.For the latter,the land use type is used as the evaluation vector.On the basis of Google historical image maps,variation diagrams of the land use type of 9 villages can be obtained with collaborative applications of ENVI and ArcGIS and the material spatial morphology evolution trends of different villages can be judged and interpreted.Taking these two aspects into consideration,the development trend of the spatial morphology of different types of villages are obtained.Thirdly,studying the correlation between quantized grades and evolution trends of rural spatial morphology.Development advantages and disadvantages of 3 types of villages can be obtained with the quantitatively evaluation of rural spatial morphology.And their trends of evolution can be gained through quantization.By comparing and analyzing these two aspects,their correlations can be obtained.In conclusion,the suburban radiated villages own the greatest advantages of development and their spatial morphology evolution trend is growth,which means their development should be vigorously supported.The resource exploited villages have certain advantages of development and their spatial morphology evolution trend is progressive,which means they deserve certain support to develop.The comprehensive independent villages' development advantages are the lowest and their social economic evolution trend is sharp growth while the material one is stable,which means a temporary wait-and-see attitude is applicable to them considering the social background. |
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