红枫湖流域聚落空间格局特征及其影响因素分析
Spatial patterns and factors impacting settlements in Hongfeng lake watershed
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摘要: 研究流域聚落空间格局特征及其分布规律,可以为聚落优化与调控提供依据。文章以红枫湖流域2000年、2005年、2010年3个时期的TM影像为主要数据,借助Erdas8.5、Arcgis9.3等软件提取出红枫湖流域内聚落、旅游、道路及河流等用地,划分聚落等级,并利用聚落面积百分比图和密度图分析流域内聚落的空间分布特征,同时划分道路、河流缓冲区并利用等高线形成坡度图来探讨流域聚落分布和道路、河流及地形地貌的关系。研究结果表明,红枫湖流域的聚落斑块数量和面积在增加,数量由852个增加到2 592个,面积由1 204.3 ha增加到4 200 ha;聚落平均密度由0.44个/km2上升到1.33个/km2;聚落百分比值较大和密度值高的地区都是平坦的坝地,聚落面积和聚落密度的空间分布、变化基本一致,面积小的聚落在快速增长,增加的聚落主要由耕地转换而来;聚落扩展方式主要是分散扩展、带状扩展、块状扩展;聚落的空间形态主要有散点式、干枝式、规则式;道路对聚落分布的影响力越来越大,而河流对聚落分布的影响却在逐渐减弱;居民点面积随着坡度的增大而减少,且25°~80°地区的聚落面积增长率持续上升。Abstract: This study aims to explore the spatial patterns of settlements and the underlying regional rules in the Hongfeng lake watershed, the results of which would provide a scientific basis for settlement optimization and regulation. Based on the Thematic Mapper (TM) images of Hongfeng lake watershed in 2000, 2005 and 2010, data for settlements, tourism-use areas, roads and rivers were extracted with the aid of Erdas8.5, ArcGIS9.3 software. The Hongfeng lake watershed was divided into a 1,000 m × 1,000 m grid with the percentage of settlements in each grid square calculated to determine settlement size-grade. The spatial distribution of settlements was converted to density figures using the Kernel Density function in Spatial Analyst Tools, and road and river buffer areas were determined. The results showed that in the Hongfeng lake watershed settlement numbers and area are rising (the number of settlement patches increased from 852 to 2,592, total area increased from 1,204.3 ha to 4,200 ha, and the average settlement density rose from 0.44/km2to 1.33/km2). A high area percentage of settlements and high settlement density are found in flat areas. Changes in the spatial distribution of the area of settlements and the settlement density are generally consistent. Small settlement patches grow rapidly. Settlement growth is mainly from farmland. Settlement expansion mainly occurs in scattered, banded and massive extensions. The spatial forms of the settlements are mostly scattered points, branches, and rules. Roads have a significant influence on settlement distribution. However, the influence of rivers is gradually declining. The total area of residential zones tends to decrease with increases in slope, but increases with the rate of settlement in 25°-80°areas.
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Key words:
- settlements /
- Hongfeng lake /
- spatial patterns /
- roads /
- river /
- gradient
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[1] Guangjin Tian,Zhi Qiao,Yaoqi Zhang. The investigation of relationship between rural settlement density, size, spatial distribution and its geophysical parameters of China using Landsat TM images[J] Ecological Modelling,2012,231:25-36. [2] 张霞,魏朝富,倪九派,等.重庆市低山丘陵区农村居民点分布格局及其影响因素[J]中国农业资源与区划.2012,33(3):45-50. [3] 肖飞,杜耘,凌峰.江汉平原村落空间分布与微地形结构关系探讨[J]地理研究,2012,31(10):1785-1792. [4] 马利邦,郭晓东,张启媛.甘谷县乡村聚落时空布局特征及格局优化[J]农业工程学报,2012,28(13):217-225. [5] 马旭,王青,丁明涛,等.岷江上游山区聚落生态位及其模型[J]生态与农村环境学报,2012,28(5):574-578. [6] 马晓冬,李全林,沈一.江苏省乡村聚落的形态分异及地域类型[J]地理学报,2012,67(4):516-525. [7] 王跃,陈亚莉.苏州城郊村镇分布特征[J]地理学报,2005,60(2):229-236. [8] Fengkai Zhu,Fengrong Zhang,Can Li,et al.Functional transition of the rural settlement: Analysis of land-use differentiation in a transect of Beijing,China[J]Habitat International,2014,41:262-271. [9] Minghong Tan,Xiubin Li.The changing settlements in rural areas under urban pressure in China: Patterns,driving forces and policy implications[J]Landscape and Urban Planning,2013,120:170-177. [10] 曾山山,周国华,肖国珍,等.地理学视角下的国内农村聚居研究综述[J]人文地理,2011,(2):68-73. [11] 周晓芳,周永章,欧阳军.喀斯特高原盆地聚落空间演变:以贵州省红枫湖水系盆地为例[J]地域研究与开发,2012,31(3):145-150. [12] 罗光杰,李阳兵,王世杰.岩溶山区聚落分布格局与演变分析:以普定县后寨河地区为例[J]长江流域资源与环境,2010,19(7):802-807. [13] 余丹,饶静,王震洪.基于GIS的红枫湖流域的景观格局分析[J]农业与技术,2012,32(1):58-59. [14] 焦树林,艾其帅.喀斯特流域退耕还林项目的碳汇效应分析:以贵州省红枫湖流域为例[J]安徽农业科学,2011,39(28):17402—17404,17407. [15] 罗光杰,李阳兵,王世杰.岩溶山区聚落格局演变等级效应及其与交通条件的关系:以贵州省后寨河、王家寨、茂兰地区为例[J]中国岩溶,2011,30(3):320-326. [16] 海贝贝,李小建,许家伟.巩义市农村居民点空间格局演变及其影响因素[J]地理研究,2013,32(12):2257-2269. [17] 鲁西奇.散村与集村:传统中国的乡村聚落形态及其演变[J]华中师范大学学报,2013,52(4):113-130 [18] 金其铭.农村聚落地理[M].北京:科学出版社,1988:59-86,97-99. [19] 贺艳华,曾山山,唐承丽,等.我国中部地区农村聚居分异特征及形成机制[J]地理学报,2013,68(12):1643-1656. [20] 刘福昌.论坡度量测的理论依据、方法与成果应用[J]贵州师范大学学报(自然科学版),1996,14(3):7-13. [21] 周晓芳,周永章.贵州典型喀斯特地貌区农村聚落空间分布研究:以清镇红枫区、毕节鸭池区和关岭-贞丰花江区为例[J]中国岩溶,2011,30(1):78-85. [22] 周晓芳,周永章,欧阳军.基于BP 神经网络的贵州3个喀斯特农村地区人居环境评价[J]华南师范大学学报(自然科学版),2012,44(3):132-138.
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