Quota Restrictions on Land Use for Decelerating Urban Sprawl of Mega City: A Case Study of Shanghai, China

Abstract

Abstract:The mega cities of China are faced with great pressure from conflict between huge land demand for construction use and limited resources. To improve this situation, it is necessary to slow the increasing rate of built-up land and even reduce the existing built-up land by improving land use efficiency. Herein, land use planning with urban sprawl deceleration is proposed. Land quotas are important tools for the control of land use planning in China, but the current quotas are mainly in the form of increment, thus cannot support land use planning with urban sprawl deceleration. To address these issues, we developed a model named "current-plan-requirement response (CPRR)", to optimize the land quotas. With this model, we investigated the current status of land use, the process of land use planning, and the requirements of land use planning with urban sprawl deceleration in Shanghai. It was found that the current land quotas have provided somewhat inhabited conversion of arable land to built-up land, but scarcely any regulation of land use efficiency or protection of natural environment. Then, the land quotas were optimized and quota management recommendations were made. The optimized land quotas included four aspects of quotas: arable land protection, ecological conservation, scale constraint on built-up land and economical and intensive land use. These new land quotas could be used to guide reduction of built-up land and increase ecological land in China's mega cities. It might also be beneficial for easing conflict between supply and demand of built-up land, for building an eco-friendly city land-use structure.

A New High-Resolution Rural Built-Up Land Extraction Method Based on Artificial Surface Index with Short-Wave Infrared Downscaling

“…Research on the structural features of built-up areas and expansion patterns is of great significance to sustainable development [2,3], urban construction [4], urban environmental monitoring [5,6], and other scientific topics. The precise identification and monitoring of built-up areas provide a basis for urban and rural planning [7] and contribute to the optimal allocation of land resources [8].…”

Quota and Space Allocations of New Urban Land Supported by Urban Growth Simulations: A Case Study of Guangzhou City, China

“…However, new population prediction is fairly flexible [14], and the new urban land per capita was set by the central government [15], lacking pertinence for different regions. In rapid urbanization, more quota of new urban land implies more development opportunities [16,17]. Therefore, the government may try to adjust the new predicted population to obtain more quota of new urban land.…”

Farmland Preservation and Urban Expansion: Case Study of Southern Ontario, Canada

“…Preserving agricultural land for current and future generations is a worldwide topic that must be addressed urgently (Hertel, 2011;Caldwell et al, 2017;FAO, 2021). Research on the threats of urbanization on farmland resources specifically is of global priority and is evident in Canada (Qiu et al, 2015;Epp and Caldwell, 2018;Connell, 2020;Cameron and Connell, 2021), the United States (Moroney and Castellano, 2018;Narducci et al, 2019), Europe (Tan et al, 2009;Perrin, 2013;Skog and Steinnes, 2016), and China (Chien, 2015;Zhang et al, 2016;Hu et al, 2018;Duan et al, 2021;Miao et al, 2021). There is a need to address complex drivers contributing to farmland loss as well as diminishing physical capacity of lands to support climate change mitigation and adaptation measures (Masson-Delmotte et al, 2021).…”