Regional water resources security assessment and optimization path analysis in karst areas based on emergy ecological footprint

Abstract

With the continuous growth of the world's social economy and population, problems such as water shortage and water environment deterioration need to be solved urgently. Combining the emergy carrying capacity of water resources and the emergy ecological footprint method, the water security and sustainable development status of the typical city in the karst region (Anshun City) was evaluated, and the internal driving factors and optimization suggestions were discussed. The research results of water security in Anshun City show that: The water resources carrying capacity fluctuates greatly with rainfall and is generally in a low-level surplus state. The ecological pressure index and the sustainable utilization index show a downward trend. The pressure intensity of social and economic systems on water resources is increasing, and the sustainable development of water resources is not optimistic. Water resources security is mainly affected by natural ecological mechanisms centered on mountain systems, geological structures and hydrological systems, as well as social mechanisms centered on changes in population scale, land development and utilization, and urban development. In the future, the sustainable development of water resources can be promoted by changing the mode of economic development, optimizing the allocation of water resources, and protecting the ecological environment.

Sustainable Management in River Valleys, Promoting Water Retention—The Opinion of Residents of South-Eastern Poland

“…Water security concerns both ecosystem health and economic development [2]. In environmental-ecological terms, water security shows the amount of water needed to maintain or improve environmental quality [3]. Available water resources are under pressure from many sectors, such as humanity [20].…”

Water resources safety assessment by combining an improved analytical comparison method with the alterable vague sets method in a typical karst region-A case study

“…For the time being, scholars' studies on influencing elements of water resources safety at home and abroad mainly focus on three aspects: water resources, social economy and ecological conditions (Liu et al, 2017). Research methodologies now available principally draw on research strategies of water resources sustainability, covering PSR (Pressure-State-Response) model (Li et al, 2023), WRF (water resources footprint) (Hou et al, 2020), MES (method of expert system) (Sun et al, 2018), AHP (analytic hierarchy process) (Ding et al, 2024), SPA (set pair analysis model) (Peng & Qin, 2019), DMBP (diminishing marginal benefit principle) (Shi et al, 2010), FIAM (fuzzy integrated assessment method) (Li et al, 2017), and so on. A few scholars have also applied these methods and models to the evaluation of water resources safety in southwestern karst areas, China.…”

Ecological effect life cycle assessment of house buildings based on emergy footprint model

“…The dynamic decomposition and regional differences were studied in Yangtze River Delta cities with an emergy footprint model 25 . The emergy ecological footprint model has been applied to the security and sustainability development of water resources 26 . The water ecological footprint is analysed with emergy analysis and spatial autocorrelation analysis to quantify and analyse the human demand for water resources and the available supply of water resource systems 27 .…”