基于地形起伏度的耕地與聚落耦合關(guān)系演變研究——以都江堰市為例
文內(nèi)圖片:
圖片說明:都江堰市2005年和2011年不同地形起伏度下耕地分布
[Abstract]:Based on DEM data, the temporal and spatial distribution characteristics and differentiation laws of cultivated land, settlement and cultivated land-settlement coupling types in Dujiangyan City were quantitatively analyzed by using cultivated land and settlement data in Dujiangyan City in 2005 and 2011, and with the help of Arc GIS software platform. The results show that: 1) the topographic fluctuation degree of Dujiangyan City is mainly plain, followed by platform and hills, and the mountainous area is small. 2) the distribution area of cultivated land and settlement in plain area is the largest, and decreases with the increase of topographic fluctuation. 3) the less cultivated land type is mainly distributed in urban area and construction town, the more cultivated land type is mainly distributed in platform area, and the equilibrium type of cultivated land and settlement is mainly distributed around Dujiangyan city. 4) in different topographic ups and downs, taking the small undulating mountain as the boundary, the different coupling types of cultivated land and settlement change obviously in plain, platform and hilly area, the less cultivated land is in the increasing trend, while the other types are in the decreasing trend. In the small undulating mountain area to the great undulating mountain area, the variation range of each type is small and the change trend is more complex.
【作者單位】: 四川師范大學(xué)西南土地資源評價(jià)與監(jiān)測教育部重點(diǎn)實(shí)驗(yàn)室;四川師范大學(xué)地理與資源科學(xué)學(xué)院;
【基金】:國家自然科學(xué)基金(40301196)
【分類號】:C912.8
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相關(guān)博士學(xué)位論文 前1條
1 王雨o,
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