湘鄂赣三省多级城镇用地扩张时空特征
作者简介:童陆亿,男,湖北宜昌人,博士生,主要从事城市土地利用转型研究。E-mail: lytongc@gmail.com
收稿日期: 2017-11-01
要求修回日期: 2018-02-24
网络出版日期: 2018-06-22
基金资助
国土资源部公益性行业科研专项基金(201511004)
Multi-level urban land expansion characterization using spatiotemporal statistics for Hunan, Hubei and Jiangxi
Received date: 2017-11-01
Request revised date: 2018-02-24
Online published: 2018-06-22
Copyright
构建了基于自由度、蔓延度和感观优劣度等时空统计分析模型的区域多级城镇用地扩张特征度量方法体系,分析了1990—2015年期间湖南、湖北和江西(湘鄂赣)三省327个县(市)全域、省域、城市群和地级市级别下的城镇用地扩张特征及其分异规律与模式。结果显示:①湘鄂赣三省多级城镇用地扩张时空特征存在分异性,且其主要源自特定级别下城镇用地扩张的空间异质性,以及特定区域不同级别度量结果的变异性;②区域多级城镇用地扩张分异特征能反映各县(市)在区域城镇建设用地扩张中所扮演的角色,本文识别出了湘鄂赣三省有序增长、持续蔓延、复合增长和复合蔓延等主要的镇用地扩张模式;③城市群和丘陵平原区,无序蔓延和复合蔓延模式表现较为明显;有序增长和复合增长模式在非城市群和山区城镇用地扩张中占主导地位。积极开展区域多级城镇用地扩张度量及其分异规律与模式分析,将助力多级、“差别化”城镇用地扩张管控和城市可持续发展战略研究。
童陆亿 , 胡守庚 . 湘鄂赣三省多级城镇用地扩张时空特征[J]. 资源科学, 2018 , 40(6) : 1175 -1185 . DOI: 10.18402/resci.2018.06.08
This study provided a framework for multi-level urban land expansion characterization through spatiotemporal statistics based on degree-of-freedom, degree-of-sprawl, and degree-of-goodness. This framework was used to estimate and analyze variable characteristics and patterns of urban land expansion from 1990-2015 in 327 counties that are administrated by Hubei, Hunan and Jiangxi provinces in central China at different levels. In addition, four different levels (overall, provincial, metropolitan and city) were examined. Results indicated that the variable characteristics of urban land expansion observed in counties administrated by Hubei, Hunan, and Jiangxi provinces at different levels were seriously generated during the period 1995-2015. In addition, varying spatiotemporal urban land expansion was, on one hand, derived by spatially heterogeneous urban land expansion among counties and on the other hand, shaped by variable outcomes of experiments estimating urban land expansion by the proposal framework in each county when characterizing the expansion at different levels. It was noteworthy that these varied sprawl characteristics might provide us with indicators for the status of counties gained among urban land expansion in large-scale regions; and with which, major urban land expansion patterns, mainly including controlled growth, floating growth, disorderly sprawl, and evolving sprawl, were identified in the study. More importantly, counties located in metropolitan and plain areas, compared to those from non-metropolitan and mountainous areas, generally witnessed dominated disorderly sprawl and evolving sprawl. Controlled growth and floating sprawl were dominate patterns in non-metropolitan, mountainous and hilly districts. Initiatives for promoting research on multi-level urban expansion estimation, variable characteristics, patterns and their inherent causative factors are of great importance for multi-level and special urban land expansion management and sustainable urban development strategies.
Figure 1 Location of Hunan, Hubei and Jiangxi provinces图1 湘鄂赣三省区位示意 |
Figure 2 Models for spatiotemporal urban land expansion characterization图2 城镇用地扩张时空特征度量模型 |
Table 1 Modified urban land expansion for Hunan, Hubei and Jiangxi Provinces from 2000 to 2015 (%)表1 1990—2015年湘鄂赣三省城镇用地扩张统计 |
| 时段/年 | 期初/期末城镇用地比例 | 城镇用地扩张规模 | 年均复合增长率 |
|---|---|---|---|
| 1990—1995 | 0.54/0.68 | 0.14 | 4.72 |
| 1995—2000 | 0.68/0.71 | 0.03 | 0.87 |
| 2000—2005 | 0.71/0.90 | 0.19 | 4.86 |
| 2005—2010 | 0.90/1.24 | 0.34 | 6.62 |
| 2010—2015 | 1.24/1.38 | 0.14 | 2.16 |
| 1990—2015 | 0.54/1.38 | 0.84 | 3.82 |
Table 2 Statistics for overall degree-of-freedom, degree-of-sprawl and degree-of-goodness for urban land expansion of Hunan, Hubei and Jiangxi Provinces from 1990 to 2015表2 1990—2015年湘鄂赣三省全域级别城镇用地扩张自由度、蔓延度与感观优劣度统计 |
| 扩张指数 | 最小值 | 最大值 | 均值 | 标准差 |
|---|---|---|---|---|
| 自由度 | 0.002 8 | 79.746 8 | 2.925 7 | 8.827 0 |
| 蔓延度 | 0.025 4 | 1.564 9 | 1.031 2 | 0.309 9 |
| 感观优劣度 | -3.332 9 | 6.032 1 | 1.187 9 | 1.704 5 |
Figure 3 Distributions of multi-level degree-of-goodness for urban land expansion of Hunan, Hubei and Jiangxi provinces from 1990 to 2015图3 1990—2015年湘鄂赣三省多级城镇用地扩张感观优劣度分布示意 |
Table 3 Statistics for provincial urban land expansion metrics of Hunan, Hubei and Jiangxi Provinces from 1990 to 2015表3 1990—2015年湘鄂赣三省省域级别城镇用地扩张指数统计 |
| 省份 | 扩张指数 | 最小值 | 最大值 | 均值 | 标准差 |
|---|---|---|---|---|---|
| 湖北省 | 自由度 | 0.003 2 | 14.862 5 | 1.393 8 | 2.723 5 |
| 蔓延度 | 0.067 6 | 1.406 5 | 0.956 1 | 0.295 7 | |
| 感观优劣度 | -2.440 8 | 5.897 2 | 1.629 1 | 1.767 7 | |
| 湖南省 | 自由度 | 0.018 0 | 40.858 3 | 2.414 4 | 6.304 5 |
| 蔓延度 | 0.564 5 | 1.564 9 | 1.212 0 | 0.194 8 | |
| 感观优劣度 | -3.226 8 | 4.155 1 | 1.161 8 | 1.660 8 | |
| 江西省 | 自由度 | 0.005 2 | 30.163 0 | 2.553 4 | 5.920 3 |
| 蔓延度 | 0.025 4 | 1.426 6 | 0.887 5 | 0.332 9 | |
| 感观优劣度 | -2.577 9 | 5.618 5 | 1.193 3 | 1.553 3 |
Table 4 Statistics for inland/non metropolitan urban land expansion metrics of Hunan, Hubei and Jiangxi Provinces from 1990 to 2015表4 1990—2015年湘鄂赣三省城市群/非城市群级别城镇用地扩张指数统计 |
| 区域级别 | 扩张指数 | 最小值 | 最大值 | 均值 | 标准差 |
|---|---|---|---|---|---|
| 城市群 | 自由度 | 0.003 2 | 109.445 1 | 6.818 4 | 15.823 1 |
| 蔓延度 | 0.165 4 | 1.428 4 | 1.036 6 | 0.271 7 | |
| 感观优劣度 | -3.647 7 | 5.884 5 | 0.428 9 | 1.975 0 | |
| 非城市群 | 自由度 | 0.005 0 | 29.566 1 | 1.056 3 | 2.809 2 |
| 蔓延度 | 0.025 4 | 1.564 9 | 1.028 5 | 0.328 0 | |
| 感观优劣度 | -2.572 6 | 5.677 8 | 1.713 3 | 1.391 5 |
Table 5 Statistics for city-level urban land expansion metrics of Hunan, Hubei and Jiangxi Provinces from 1990 to 2015表5 1990—2015年湘鄂赣三省地级及以上城市级别城镇用地扩张指数统计 |
| 扩张指数 | 最小值 | 最大值 | 均值 | 标准差 |
|---|---|---|---|---|
| 自由度 | 0.002 7 | 32.456 4 | 1.031 6 | 2.564 5 |
| 蔓延度 | 0.025 4 | 1.564 9 | 1.033 6 | 0.310 0 |
| 感观优劣度 | -3.156 7 | 6.071 5 | 1.825 8 | 1.665 0 |
Table 6 Horizontal variety of multi-level urban land expansion of Hunan, Hubei and Jiangxi Provinces from 1990 to 2015表6 1990—2015年湘鄂赣三省多级别城镇用地扩张特征横向分异性 |
| 区域级别 | 自由度变异系数 | 蔓延度变异系数 | 感观优劣度变异系数 |
|---|---|---|---|
| 全域 | 3.002 7 | 0.300 1 | 1.445 7 |
| 省域 | 2.469 4 | 0.300 1 | 1.277 8 |
| 城市群/非城市群 | 3.266 8 | 0.300 1 | 1.346 7 |
| 地级及以上城市 | 2.476 0 | 0.300 1 | 0.914 4 |
Figure 4 Vertical variety of multi-level degree-of-freedom and degree-of-goodness for urban land expansion of Hunan, Hubei and Jiangxi provinces from 1990 to 2015图4 1990—2015年湘鄂赣三省多级城镇用地扩张自由度与感观优劣度纵向分异性示意 |
Figure 5 Urban land expansion patterns and typical cities from Hunan, Hubei and Jiangxi provinces from 1990 to 2015图5 1990—2015年湘鄂赣三省城镇用地扩张模式与典型扩张区分布示意 |
Table 7 Frequencies for urban land sprawl patterns in different regions of Hunan, Hubei and Jiangxi Provinces from 1990 to 2015表7 1990—2015年湘鄂赣三省分区域城镇用地扩张模式频数统计 |
| 扩张模式 | 全域 | 城市群 | 非城市群 | 丘陵平原区 | 山区 |
|---|---|---|---|---|---|
| 有序增长 | 157 | 38 | 119 | 63 | 94 |
| 持续蔓延 | 39 | 30 | 9 | 33 | 6 |
| 复合增长 | 109 | 31 | 78 | 69 | 40 |
| 复合蔓延 | 22 | 10 | 12 | 17 | 5 |
| 总计 | 327 | 109 | 218 | 182 | 145 |
The authors have declared that no competing interests exist.
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