本文選題：貧困縣 + 空間分布格局�。� 參考：《經(jīng)濟(jì)地理》2017年10期

【摘要】：以90 m分辨率全國DEM數(shù)據(jù)和GIS空間分析方法為基礎(chǔ),以中國貧困縣為研究對象,探討影響縣域財富空間分布的地形環(huán)境動因。通過計算地面坡度、地形起伏度、河網(wǎng)長度與密度等,探討地形因子與縣域財富分布的空間耦合關(guān)系。結(jié)果表明,貧困縣主要位于我國三大地形階梯的第二階梯,以黃土高原、秦巴山地、云貴高原最為集中,該區(qū)域也位于胡煥庸人口分界線兩側(cè)附近。研究表明,復(fù)雜的地形條件對貧困縣的空間分布具有相當(dāng)強度的正向驅(qū)動作用。其中,70%的貧困縣位于地面平均坡度在10°以上的區(qū)域;72%的貧困縣位于3×3鄰域窗口內(nèi)(270 m×270 m)地形起伏度達(dá)50 m以上的區(qū)域。值得注意的是,山區(qū)地域90 m分辨率DEM數(shù)據(jù)在相當(dāng)程度上弱化了坡度和地形起伏度計算結(jié)果,而貧困縣地形環(huán)境在真實情況下更為惡劣,嚴(yán)重阻礙經(jīng)濟(jì)發(fā)展,進(jìn)一步印證地形條件對貧困縣分布的影響�？梢�,貧困摘帽已不能依賴先天不足的第一產(chǎn)業(yè),政府主導(dǎo)性產(chǎn)業(yè)向貧困縣地域的強勢布局,及由此產(chǎn)生可能的羊群效應(yīng)有望推動區(qū)域平衡發(fā)展。
[Abstract]:Based on 90m resolution national DEM data and GIS spatial analysis method, the topographic and environmental factors influencing the spatial distribution of wealth in poor counties in China are discussed. The spatial coupling relationship between topographic factors and county wealth distribution is discussed by calculating the surface slope, topographic fluctuation, river network length and density. The results show that the poverty-stricken counties are mainly located in the second step of the three major terrains in China, with the Loess Plateau, the Qinba Mountains and the Yungui Plateau being the most concentrated, and the region is also located near the two sides of Hu Huanyong's population demarcation line. The study shows that the complex terrain conditions have a strong positive driving effect on the spatial distribution of poor counties. Among them, 70% of the poor counties are located in areas with an average slope of 10 擄or above. 72% of the poor counties are located in an area of 270m 脳 270m within the 3 脳 3 neighborhood window) where the relief degree of the terrain is more than 50 m. It is worth noting that the DEM data with 90 m resolution in mountainous area weakens the calculation results of slope and topographic fluctuation to a certain extent, while the terrain environment in poor counties is even worse in real conditions, which seriously hinders the development of economy. To further verify the impact of terrain conditions on the distribution of poor counties. It can be seen that poverty can no longer rely on the natural shortage of the primary industry, the strong layout of the government leading industries to the poor counties, and the potential herd effect will promote the balanced development of the region.
【作者單位】： 南京郵電大學(xué)地理與生物信息學(xué)院;南京師范大學(xué)虛擬地理環(huán)境教育部重點實驗室;江蘇省地理信息資源開發(fā)與利用協(xié)同創(chuàng)新中心;威斯康辛大學(xué)麥迪遜分校地理系;
【基金】：國家自然科學(xué)基金項目(41601411、41701185) 江蘇省自然科學(xué)基金青年項目(BK20160893) 江蘇省高校哲學(xué)社會科學(xué)研究項目(2016SJB630001) 江蘇省高校自然科學(xué)研究面上項目(16KJB170012) 南京郵電大學(xué)校引進(jìn)人才項目(NYY215017) 江蘇省高校哲學(xué)社會科學(xué)重點項目(2017ZDIXM123) 中央高�；究蒲袠I(yè)務(wù)費專項資金項目(30920140122012)
【分類號】：F127;K901
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本文編號：1826189