scholarly journals The Implications of Ecological Sensitivity on Exploitation of Unutilized Land: A Case Study in Ji’Nan City, China

2011 ◽  
Vol 10 ◽  
pp. 275-281 ◽  
Author(s):  
Xiaoming Wang ◽  
Zhengfu Bian
Keyword(s):  
Ecological Sensitivity

scholarly journals Evaluation of ESV Change under Urban Expansion Based on Ecological Sensitivity: A Case Study of Three Gorges Reservoir Area in China

2021 ◽  
Vol 13 (15) ◽  
pp. 8490
Author(s):  
Hongjie Peng ◽  
Lei Hua ◽  
Xuesong Zhang ◽  
Xuying Yuan ◽  
Jianhao Li
Keyword(s):  
Three Gorges Reservoir ◽  
Urban Expansion ◽  
Urban Land ◽  
Three Gorges Reservoir Area ◽  
Three Gorges ◽  
Ecological Sensitivity ◽  
Reservoir Area ◽  
Green Development ◽  
Source Data

In recent years, ecosystem service values (ESV) have attracted much attention. However, studies that use ecological sensitivity methods as a basis for predicting future urban expansion and thus analyzing spatial-temporal change of ESV are scarce in the region. In this study, we used the CA-Markov model to predict the 2030 urban expansion under ecological sensitivity in the Three Gorges reservoir area based on multi-source data, estimations of ESV from 2000 to 2018 and predictions of ESV losses from 2018 to 2030. Research results: (i) In the concept of green development, the ecological sensitive zone has been identified in Three Gorges reservoir area; it accounts for about 35.86% of the study area. (ii) It is predicted that the 2030 urban land will reach 211,412.51 ha by overlaying the ecological sensitive zone. (iii) The total ESV of Three Gorges Reservoir area showed an increasing trend from 2000 to 2018 with growth values of about USD 3644.26 million, but the ESVs of 16 districts were decreasing, with Dadukou and Jiangbei having the highest reductions. (iv) New urban land increases by 80,026.02 ha from 2018 to 2030. The overall ESV losses are about USD 268.75 million. Jiulongpo, Banan and Shapingba had the highest ESV losses.

scholarly journals Construction of ecological security pattern based on the importance of ecosystem service functions and ecological sensitivity assessment: a case study in Fengxian County of Jiangsu Province, China

2020 ◽  
Vol 23 (1) ◽  
pp. 563-590
Author(s):  
Xingxing Jin ◽  
Luyao Wei ◽  
Yi Wang ◽  
Yuqi Lu
Keyword(s):  
Economic Development ◽  
Ecosystem Service ◽  
Ecological Environment ◽  
Small Scale ◽  
Ecological Security ◽  
Ecological Sensitivity ◽  
Resistance Surface ◽  
Ecological Resistance ◽  
Security Pattern

AbstractThe construction of ecological security pattern is one of the important ways to alleviate the contradiction between economic development and ecological protection, as well as the important contents of ecological civilization construction. How to scientifically construct the ecological security pattern of small-scale counties, and achieve sustainable economic development based on ecological environment protection, it has become an important proposition in regulating the ecological process effectively. Taking Fengxian County of China as an example, this paper selected the importance of ecosystem service functions and ecological sensitivity to evaluate the ecological importance and identify ecological sources. Furthermore, we constructed the ecological resistance surface by various landscape assignments and nighttime lighting modifications. Through a minimum cumulative resistance model, we obtained ecological corridors and finally constructed the ecological security pattern comprehensively combining with ecological resistance surface construction. Accordingly, we further clarified the specific control measures for ecological security barriers and regional functional zoning. This case study shows that the ecological security pattern is composed of ecological sources and corridors, where the former plays an important security role, and the latter ensures the continuity of ecological functions. In terms of the spatial layout, the ecological security barriers built based on ecological security pattern and regional zoning functions are away from the urban core development area. As for the spatial distribution, ecological sources of Fengxian County are mainly located in the central and southwestern areas, which is highly coincident with the main rivers and underground drinking water source area. Moreover, key corridors and main corridors with length of approximately 115.71 km and 26.22 km, respectively, formed ecological corridors of Fengxian County. They are concentrated in the western and southwestern regions of the county which is far away from the built-up areas with strong human disturbance. The results will provide scientific evidence for important ecological land protection and ecological space control at a small scale in underdeveloped and plain counties. In addition, it will enrich the theoretical framework and methodological system of ecological security pattern construction. To some extent, it also makes a reference for improving the regional ecological environment carrying capacities and optimizing the ecological spatial structure in such kinds of underdeveloped small-scale counties.

R/Urban trends in Beijing. Three cases from the city's peri-urban periphery

TERRITORIO ◽  
2012 ◽  
pp. 112-116
Author(s):  
Annelies De Nijs ◽  
Pei-Chun Wen ◽  
Wu Di
Keyword(s):  
Urban Agriculture ◽  
Urban Areas ◽  
Sustainable Production ◽  
Government Policies ◽  
Contemporary China ◽  
Ecological Sensitivity ◽  
Urban Periphery ◽  
Productive Land

In contemporary China, the evolution of productive land is related to specifi c government policies and the changing spatial conditions of the nation. Urban agriculture is particularly developed in the friction area between the (ever growing) urban and (threatened) rural territories. Different ways of cultivating the peri-urban areas are described in the paper, through the exploration of three cases of urban agriculture in Beijing. Whereas the fi rst two - Liuminying and Xiedao - show a major concern for sustainable production and agro-tourism, with a less embedded relationship with their respective contexts, the Taihu project is more rooted to its locale and provides a strong answer to the ecological sensitivity of the site. It can be argued that the Taihu case study exemplifi es an alternative to China's ever-booming amount of and seemingly randomly placed agro-tourism sites.

scholarly journals Evaluating Urban Land Carrying Capacity Based on the Ecological Sensitivity Analysis: A Case Study in Hangzhou, China

2017 ◽  
Vol 9 (6) ◽  
pp. 529 ◽  
Author(s):  
Jinyeu Tsou ◽  
Yanfei Gao ◽  
Yuanzhi Zhang ◽  
Sun Genyun ◽  
Jinchang Ren ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Carrying Capacity ◽  
Urban Land ◽  
Ecological Sensitivity ◽  
Land Carrying Capacity
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