The Improvement of the Urban Fringe Rural Settlements Land Towards Urbanization Based on Niche Fitness Evaluation
Received date: 2012-12-05
Request revised date: 2013-04-05
Online published: 2013-08-20
Copyright
Based on the reformed niche-fitness model theory,an evaluation method was developed to assess the urbanization suitability of over 2000 rural settlements sites around urban fringe zone of Lianyungang City. It is indicated that the sites suited for urbanization amount to 45%. Driven by various factors (such as gravity of road and terrain elevation resistance),the distribution of rural settlements urbanization suitability presents significant aggregation and mutation characteristics. The rural settlements that are suited for urbanization are mostly located in Huaguoshan, Chaoyang town and Haizhou economic development zone. The 10-minutes travel time cost line and the 10-meters contour line are two obvious lines which divided the suitability. The settlements located inside cost line area have 70% possibility of suitability for urbanization process, while the other merely have less than 30% possibility. The area inside the line which are suited for converting the rural settlements into urbanization, the other areas outside are suited for maintaining the status quo or being put into agricultural or forest usage. The composite line formed by two lines can be used as the "Red Line" of urban expansion in the study area, offering the limited scale on the development of the urban and the optimization allocation of urban-rural resource development.
Key words: niche; suitability evaluation; urban fringe; land remediation; Lianyungang City
LI Zhi , ZHOU Sheng-lu , WU Shao-hua , LU Li-gang , WU Ying-ying . The Improvement of the Urban Fringe Rural Settlements Land Towards Urbanization Based on Niche Fitness Evaluation[J]. SCIENTIA GEOGRAPHICA SINICA, 2013 , 33(8) : 972 -978 . DOI: 10.13249/j.cnki.sgs.2013.08.972
Table 1 Logistic nonlinear regression equation and coefficient test表 1 Logistic回归方程及其系数的显著性检验 |
模型 | 非标准化系数 | T | Sig. | B 的 95.0% 置信区间 | 共线性统计量 | ||||
---|---|---|---|---|---|---|---|---|---|
Ba | 标准误差 | 下限 | 上限 | 容差 | VIF | ||||
Ln(1/y) | (常量) | 1.532 | 0.201 | 3.872 | 0.000 | 1.146 | 1.918 | ||
x18 | -0.5231 | 0.235 | -1.3428 | 0.039 | -0.974 | -0.072 | 0.343 | 2.732 | |
x16 | 0.73465 | 0.151 | 3.038 | 0.000 | 0.445 | 1.025 | 0.164 | 4.453 | |
x15 | -1.29031 | 0.231 | -5.987 | 0.000 | -1.734 | -0.847 | 0.293 | 4.12 | |
x17 | 0.53246 | 0.145 | 3.93 | 0.000 | 0.254 | 0.811 | 0.389 | 3.904 | |
x10 | 0.00207 | 0.001 | -1.321 | 0.105 | 0.000 | 0.004 | 0.773 | 1.232 | |
x1 | 0.0001 | 0.000 | 5.632 | 0.000 | 0.000 | 0.000 | 0.771 | 1.353 | |
x2 | 0.00002 | 0.000 | 1.895 | 0.096 | 0.000 | 0.000 | 0.202 | 3.867 | |
x7 | 0.00005 | 0.000 | -4.239 | 0.003 | 0.000 | 0.000 | 0.112 | 3.531 | |
x8 | 0.00003 | 0.000 | 2.349 | 0.005 | 0.000 | 0.000 | 0.323 | 3.453 |
Table 2 The main factors and its level of rural settlements urbanization suitability Niche State表 2 农居点用地城镇化生态适宜性“态”的主要影响因素及分值 |
因素 | 分值 | ||||
---|---|---|---|---|---|
100 | 80 | 60 | 40 | 20 | |
农居点高程(m) | <15 | 15~30 | 30~100 | 100~300 | >300 |
固定资产累积量(万元/hm2) | >130 | 130~100 | 100~70 | 70~40 | <40 |
农村企业收入(元/人) | >22000 | 22000~18000 | 18000~14000 | 14000~10000 | <10000 |
农村人均纯收入(元/人) | >8000 | 8000~6000 | 6000~4000 | 4000~2000 | <2000 |
农村人口密度(人/m2) | >0.0045 | 0.0045~0.0042 | 0.0042~0.0039 | 0.0039~0.0033 | <0.0033 |
Table 3 The main factors and parameter level of rural settlements urbanization suitability Niche Potential表3 农居点用地城镇化生态适宜性“势”的主要影响因素及参数 |
邻居单元 | 初始分值Ai | 导向权重δi | |
---|---|---|---|
几何类型 | 属性类型 | ||
点状邻居 | 一级商业中心 | 100 | 1 |
二级商业中心 | 50 | 0.2 | |
线状邻居 | 城市主干道 | 100 | 1 |
城市次干道 | 50 | 0.6 | |
面状邻居 | 城镇用地型邻居 | / | 1 |
工矿用地型邻居 | / | 0.3 | |
农业用地型邻居 | / | 0.1 | |
其他用地型邻居 | / | 0 |
Fig. 1 Spatial aggregation distribution of rural settlements urbanization remediation suitability in study area图 1 研究区农居点用地城镇化整治适宜度空间聚集分布 |
Fig. 2 Spatial distribution characteristics of rural settlements urbanization suitability in the typical township图 2 典型乡镇农居点用地城镇化整治适宜性空间分布特征 |
Table 4 Spatial distribution and differentiation of rural settlements urbanization suitability in the typical township表4 典型乡镇区农居点用地城镇化整治适宜性空间分布及分异 |
分区 | 极不适宜(hm2) | 不适宜(hm2) | 低度适宜(hm2) | 中度适宜(hm2) | 高度适宜(hm2) | 总计(hm2) | |
---|---|---|---|---|---|---|---|
旅行成本时区 | <5 min | 48 | 170 | 64 | 563 | 40 | 884 |
5~10 min | 53 | 99 | 50 | 305 | 177 | 683 | |
10~15 min | 234 | 109 | 50 | 4 | 4 | 400 | |
15~30 min | 128 | 13 | 49 | 0 | 0 | 190 | |
>30 min | 119 | 121 | 32 | 0 | 0 | 273 | |
总计 | 582 | 512 | 245 | 871 | 220 | 2430 | |
高程区 | <10 m | 302 | 272 | 127 | 676 | 220 | 1598 |
10~30 m | 171 | 184 | 97 | 130 | 0 | 582 | |
30~100 m | 84 | 43 | 21 | 65 | 0 | 213 | |
100~300 m | 24 | 11 | 0 | 0 | 0 | 35 | |
>300 m | 1 | 0 | 0 | 0 | 0 | 2 | |
总计 | 582 | 512 | 245 | 871 | 220 | 2430 |
The authors have declared that no competing interests exist.
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