Identifying the impact of urban development on abutting ecology in Chandigarh using remote sensing based ecological index

IF 4.7 3区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Environment, Development and Sustainability Pub Date : 2024-09-14 DOI:10.1007/s10668-024-05369-9
Nirwan Nirwan, Kavichelvan Kanagavel, Asfa Siddiqui
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Abstract

The city of Chandigarh has been urbanizing and expanding at an aggressive rate. Despite the urban expansion being mostly planned in nature has shown underlying indications of deteriorating ecological health in the city and its abutting natural resources. Changing migration patterns and decreasing vegetation cover are just few of the indicators raising the need to analyse the ecological quality of the region. Ecological quality can be seen as a measure of the health of an environment to sustain life. Remote sensing can be used to monitor the land surface over varied spatiotemporal extents. This study uses the Remote Sensing-based Ecological Index (RSEI) to study the spatiotemporal changes in the environmental quality of the city of Chandigarh over four decades. Four factors i.e., greenness, wetness, dryness, and heat that affect environmental quality are analysed using principal component analysis to calculate RSEI. The contribution of each of the indicators to RSEI and the spatial correlation of results are studied using correlation analysis and Moran’s Index. Landcover maps are developed using Cart classifier to understand the growth patterns and establish relation to changes in ecological index values. The change in RSEI for individual land cover categories shows the degradation of ecological health in natural resources. The RSEI values of vegetation and surface water show a deteriorating trend from 1991 to 2020. Furthermore, the study area shows intense degradation of RSEI values in the city outskirts where a major shift to built-up landcover has taken place. The association of landcover change and its impact on ecological quality can assist planners in adopting suitable strategies to assure that ecological health is integrated when urban expansion is carried out. This study provides insights into the development strategies and their impact on the ecological resources of the city that may otherwise not be identified by overall RSEI value and landcover assessment.

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利用基于遥感的生态指数确定昌迪加尔城市发展对周边生态的影响
昌迪加尔市一直在以迅猛的速度城市化和扩张。尽管城市扩张大多是有计划的,但城市及其周边自然资源的生态健康状况却在不断恶化。不断变化的移民模式和植被的减少只是其中的几个指标,这些指标表明有必要对该地区的生态质量进行分析。生态质量可被视为衡量环境是否健康以维持生命的标准。遥感技术可用于监测不同时空范围的地表。本研究使用基于遥感的生态指数(RSEI)来研究昌迪加尔市四十年来环境质量的时空变化。利用主成分分析法分析了影响环境质量的四个因素,即绿度、湿度、干度和热度,从而计算出 RSEI。利用相关分析和莫兰指数研究了每个指标对 RSEI 的贡献以及结果的空间相关性。使用 Cart 分类器绘制土地覆盖图,以了解增长模式并确定与生态指数值变化的关系。各个土地覆被类别的 RSEI 值变化显示了自然资源生态健康的退化。从 1991 年到 2020 年,植被和地表水的 RSEI 值呈恶化趋势。此外,研究区域的 RSEI 值在城市郊区严重退化,因为那里的土地覆被主要转向建筑用地。将土地覆盖变化及其对生态质量的影响联系起来,可帮助规划者在进行城市扩张时采取适当的策略,确保生态健康。这项研究为发展战略及其对城市生态资源的影响提供了见解,而这些见解可能无法通过整体 RSEI 值和土地覆盖评估来识别。
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来源期刊
Environment, Development and Sustainability
Environment, Development and Sustainability Economics, Econometrics and Finance-Economics and Econometrics
CiteScore
10.20
自引率
6.10%
发文量
754
期刊介绍: Environment, Development and Sustainability is an international and multidisciplinary journal covering all aspects of the environmental impacts of socio-economic development. It is also concerned with the complex interactions which occur between development and environment, and its purpose is to seek ways and means for achieving sustainability in all human activities aimed at such development. The subject matter of the journal includes the following and related issues: -mutual interactions among society, development and environment, and their implications for sustainable development -technical, economic, ethical and philosophical aspects of sustainable development -global sustainability - the obstacles and ways in which they could be overcome -local and regional sustainability initiatives, their practical implementation, and relevance for use in a wider context -development and application of indicators of sustainability -development, verification, implementation and monitoring of policies for sustainable development -sustainable use of land, water, energy and biological resources in development -impacts of agriculture and forestry activities on soil and aquatic ecosystems and biodiversity -effects of energy use and global climate change on development and sustainability -impacts of population growth and human activities on food and other essential resources for development -role of national and international agencies, and of international aid and trade arrangements in sustainable development -social and cultural contexts of sustainable development -role of education and public awareness in sustainable development -role of political and economic instruments in sustainable development -shortcomings of sustainable development and its alternatives.
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