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Topic Review
Long-Term Trends of Heat Stress for South Africa
Increasing air temperature coupled with high humidity due to ongoing climate change across most parts of South Africa is likely to induce and intensify heat exposure, particularly in densely populated areas. The adverse health implications, including heatstroke, are expected to be common and more severe during extreme heat and heat wave events.
  • 708
  • 17 Dec 2021
Topic Review
Bioaccumulation of Fluoride and Its Microbially Assisted Remediation
Fluoride is widely found in soil–water systems due to anthropogenic and geogenic activities that affect millions worldwide. Fluoride ingestion results in chronic and acute toxicity, including skeletal and dental fluorosis, neurological damage, and bone softening in humans. 
  • 1.0K
  • 17 Dec 2021
Topic Review
Biomass Supply Chains in Post-COVID-19 Recovery
Researchers investigates how biomass supply chains (BSChs) for bioenergy within the broader bioeconomy could contribute to the post-COVID-19 recovery in three dimensions: boosting economic growth, creating jobs, and building more resilient and cleaner energy systems in four future scenarios, in the short term (by 2023) and long term (by 2030).
  • 729
  • 17 Dec 2021
Topic Review
Towards Higher Quality of Recycled Plastics
The increasing consumption of plastics and plastic products results in correspondingly substantial volumes of waste, which poses considerable environmental burdens. With the ongoing environmental actions, the application of circular economy on this waste stream is becoming inevitable. The quality of recycled plastic is generally determined by the homogeneity of the recovered plastic feed. 
  • 750
  • 16 Dec 2021
Topic Review
Critical Factors in Renewable Energy Generation
The factors influencing the development of renewable energy in the electrical power sector can be grouped into four main clusters: (i) economic factors, (ii) legal and policy factors, (iii) social acceptance factors, and (iv) adverse impacts of renewable energy projects on the ecological environment.
  • 6.1K
  • 16 Dec 2021
Topic Review
Deep Learning-Based Building Extraction from Remote Sensing Images
Building extraction from remote sensing (RS) images is a fundamental task for geospatial applications, aiming to obtain morphology, location, and other information about buildings from RS images, which is significant for geographic monitoring and construction of human activity areas. In recent years, deep learning (DL) technology has made remarkable progress and breakthroughs in the field of RS and also become a central and state-of-the-art method for building extraction. 
  • 668
  • 15 Dec 2021
Topic Review
Zero-Waste City Construction in Xuzhou
The rapidly growing output of solid waste has brought tremendous pressure to urban development. China launched an action plan known as “Zero-waste city” (ZWC), that refers to an urban development model aimed at reducing the generation of and enhancing the recycling of solid waste, in order to alleviate environmental impacts. Xuzhou, as one of the 11 pilot cities selected by the Ministry of Ecology and Environment, is the chosen object of this study. Based on the analysis of material flow and the national policy objectives, five main approaches are put forward in line with the characteristics of Xuzhou, and good results have been achieved in solid waste management through practical experience.
  • 746
  • 15 Dec 2021
Topic Review
Voisin Rational Grazing and Its Four Principles
This entry briefly describes the need to promote sustainable agriculture, proposing Voisin Rational Grazing (VRG) as an alternative livestock production system as a way to address sustainability in all its dimensions. It describes the four VRG principles that allows this livestock production system to attain high productive standards while boosting social, cultural and environmental characteristics within the pastoral ecosystem.
  • 1.0K
  • 15 Dec 2021
Topic Review
Forest Ecological Security in China: A Provincial-Level Analysis
Under the background of China’s proposal to achieve “carbon neutralization and carbon peak”, it is an important task for each province to clarify their forest ecological security (FES) status. However, there is little understanding of the temporal and spatial evolution of forest ecological security and its influencing factors.Based on the Pressure-State-Response (PSR) model, this paper constructed a comprehensive evaluation index system for forest ecological security and used the CRITIC method and panel data to estimate the dynamic changes in FES for 31 provinces in China (excluding Hong Kong, Macao, and Taiwan) between 2009 and 2018. Furthermore, the obstacle degree model was used to determine the important obstacle factors affecting FES. The results showed that: (1) The comprehensive indices of FES of most provinces in mainland China were increasing, showing a good development trend during the study period; (2) subject to the limitations of resources and economic conditions, the FES at the provincial level showed significant spatial heterogeneity, which generally presents a distribution characteristic of “low in the western region and high in the central and eastern regions”; and (3) the primary obstacles restricting the improvement of FES level in most provinces of China were forest state indicators or input response indicators, followed by pressure indicators. Therefore, it is recommended to take targeted measures to reduce the intensity of forest cutting and the incidence of forest disasters, improve the utilization efficiency of forest resources, the productivity of forestland and the input-output level of forestry industry, and strengthen the training of professional talents and technical input according to the resource endowment condition of each province so as to improve the level of forest ecological security.
  • 509
  • 15 Dec 2021
Topic Review
Multidimensional Food Security Nexus under Climate Change
Hyperarid, arid, semiarid, and dry subhumid areas cover approximately 41% of the global land area. The human population in drylands, currently estimated at 2.7 billion, faces limited access to sufficient, affordable, and nutritious food. Researchers discuss the interlinkages among water security, environmental security, energy security, economic security, health security, and food security governance, and how they affect food security in drylands. 
  • 709
  • 15 Dec 2021
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