Effect of urbanization on the dynamics of ecosystem services: An analysis for decision making in Kolkata urban agglomeration

Abstract

The structural strength and functional diversity of ecosystems were maintained by natural process, where the living organisms interact with their physical environment and exchange materials between them. Land use and land cover change exert signi cant impact on ecosystem services and their values, especially in the urban agglomerations. Kolkata urban agglomeration of India has been selected to determine the causes in changes of ecosystem services under present and projected land use land cover scenario. Land use land cover maps of 1990, 2000, 2010 and 2020 were prepared by support vector machine method, using LANDSAT satellite imageries and projected maps were produced with the help of CA-Markov model. Built-up land was increased by 65.39% during 1990-2020 and it will be increased by 76.88% during the period 1990-2040. Built-up lands are mainly encroaching crop lands and wetlands. The ecosystem service value will be decreased from $38486.49 during 1990 to $28060.79 during 2040. The rate of change of ecosystem service value was -27.09% during the same period. In Kolkata urban agglomeration, area under very low ecosystem service value will be increased from 16.60 to 58.88% during 1990-2040; whereas, the area coverage of very high ecosystem service value will be decreased from 2.69 to 2.35% during the same period. Water supply contributed highest ecosystem service value followed by disturbance regulation and nutrient cycling; whereas, lacking in soil formation, pollination and biological control services contributed lowest. The study will contribute for decision making process in sustainable management of natural resources and also provide some useful guidelines for the improvement of ecological quality in the study landscape.

A Multi-Scenario Land Expansion Simulation Method from Ecosystem Services Perspective of Coastal Urban Agglomeration: A Case Study of GHM-GBA, China

“…Previous studies on land expansion have mainly set constraints and predicted land use scale based on historical data or empirical values. In contrast with other studies, Das et al (2022) used CA-Markov models to predict land use land cover and the causes of ecosystem service change in the Kolkata urban agglomeration by 2040 [45]. Barred and Demicheli (2003) proposed a bottomup approach that combines land use factors with a dynamic approach to simulate land use scenarios in Lagos, offering the possibility of exploring future spatial patterns of land use under specific assumptions [46].…”

Evaluation of Urban Ecological Security and Measurement of Urban Ecological Resilience

“…He then supplemented and revised it in 2015 . Studies on ecosystem service function are analyzed from the perspective of administrative regions (Guo et al, 2001;Li et al, 2009;Mamat et al, 2013;Zhao et al, 2013;Kremer et al, 2016;Gashaw et al, 2018;Ruiz-Sandoval et al, 2019;Solomon et al, 2019;Yu et al, 2022) and natural divisions such as watersheds and urban agglomeration Das et al, 2022; in terms of research scale.…”

Analysis of the gains and losses of ecosystem service value under land use change and zoning in Qiqihar

“…He then supplemented and revised it in 2015 (Xie et al, 2015). Studies on ecosystem service function are analyzed from the perspective of administrative regions (Guo et al, 2001;Li et al, 2009;Mamat et al, 2013;Zhao et al, 2013;Kremer et al, 2016;Gashaw et al, 2018;Ruiz-Sandoval et al, 2019;Solomon et al, 2019;Yu et al, 2022) and natural divisions such as watersheds and urban agglomeration (Liu et al, 2020;Pan et al, 2021;Das et al, 2022;Huang et al, 2022) in terms of research scale.…”