[1]CHANG Ting,ZHOU Sheng-lu,DAI Liang,et al.Study on Urban and Rural Gradient Rule of Land Ecological Quality in Jintan City[J].Research of Soil and Water Conservation,2014,21(03):130-135.
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Study on Urban and Rural Gradient Rule of Land Ecological Quality in Jintan City
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 03
Page number:
130-135
Column:
Public date:
2014-06-28
- Title:
- Study on Urban and Rural Gradient Rule of Land Ecological Quality in Jintan City
- Keywords:
- land ecological index; hotspot spatial differentiation; transect gradient; circle gradient; Jintan City
- CLC:
- F301.24
- DOI:
- -
- Abstract:
- As a typical city with developed economy in the Yangtze River Delta region, land ecological problem of Jintan City is representative. In order to verify the influence of urbanization on the land ecological quality, this paper builds the indicator system of land ecological index from the perspectives of foundation, stress, structure and efficiency. The scores of four criteria layers and land ecological index were calculated in the unit of administrative village. Based on this, the distribution of land ecological quality in Jintan City is assumed to show urban and rural gradient rule, and this assumption is validated by using hotspots, circle gradient analysis and transect gradient analysis. The results are as followings: (1) the hotspot spatial distributive characteristics of land ecological index meets the urban and rural gradient rule, and this phenomenon is mainly caused by urbanization; (2) circle gradient analysis indicates that land ecological index raises along with ‘urban-urban fringe-inner suburbs-outer suburbs’ circle gradient in Jintan City, land ecological index increases by every 1.6% when there is a distance of 2 400 m away from town center, though criteria layer gradient is insignificant, but its scores showed an increasing trend from the inside; (3) the results show that ecological quality status of the town center is in the lowest land values, and land ecological quality of urban area is worse than the normal, it shows that urbanization had an adverse effects on the land ecological quality at a finer level, land ecological structure in Jintan City is the most significant factor to influence the composite index; (4) in this paper, land ecological index spatial differentiation is explored deeply. Moreover, the driving force for the spatial variation of land ecological indices and identification of the main factors will be explored in the further studies. This study could lead the government to implement policy that may improve the ecological quality in the process of urbanization.
- References:
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