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Topic Review
Brush Management Using Fire in Grassland National Parks
The grasslands of North America are threatened by woody encroachment. Restoring historical fire regimes has been used to manage brush encroachment. However, fire management may be insufficient due to the nonlinear and hysteretic responses of vegetation recovery following encroachment and the social–political constraints affecting fire management. 
  • 179
  • 20 Nov 2023
Topic Review
Vermicompost Application in the Remediation of Soils
Vermicompost improves soil quality, increases nutrient availability, boosts crop productivity, and enhances pest and disease tolerance. It acts as an organic fertilizer, enriching the soil with essential nutrients, humic acids, growth-regulating hormones, and enzymes, improving plant nutrition, photosynthesis, and overall crop quality. Furthermore, vermicompost shows promise in mitigating soil degradation and sequestering organic carbon while demonstrating the potential for pest management, including effectiveness against pests like fall armyworm (Spodoptera frugiperda).
  • 277
  • 20 Nov 2023
Topic Review
CO2 Emissions in Economy
The rise in carbon dioxide emissions (CO2e) is one of the most critical environmental problems confronting the world today. Burning fossil fuels is the main cause of CO2e. The environmental degradation (ED) brought on by increasing energy consumption (EC) has been another problem for the global economy in addition to positive effects of continuing of economic growth (EG) unless coupled with efficient environmental policies.
  • 211
  • 20 Nov 2023
Topic Review
Emissions, Decarbonization, and Alternative Fuels in Inland Navigation
In response to the pressing need for transportation decarbonization, the often overlooked domain of inland waterway transport and seeks to answer which alternative fuel or power source is the most promising for that sector. As the shipping industry significantly contributes to global carbon emissions, it has been shifting towards alternative fuels and decarbonization measures in the effort to reduce them, whereas the inland waterways, operating predominantly on diesel engines, have not achieved equivalent substantial progress. Liquified natural gas (LNG) initially emerged as a favored alternative fuel, but recent studies emphasize a shift towards “greener” solutions like batteries and hydrogen. Europe and Asia lead in these developments. This investigation uncovers critical gaps in research and development, particularly in the Northern European countries that have extensive inland waterway networks. It also calls for future studies to explore the performance of vessels that have adopted LNG compared to other emerging alternatives and emphasizes the importance of considering the time lag between technology development and research publication.
  • 189
  • 20 Nov 2023
Topic Review
State of Research on Agroecology Transition
As a sustainable and holistic approach to agriculture, agroecology has received considerable attention because of its potential to address the environmental, economic, and social challenges of agricultural systems. In order to identify key trends, influential authors, impactful journals, emerging research themes and gap in research on agroecological adoption, a bibliometric analysis based on the metadata of documents is performed to deal with agroecology adoption and the methods used for its evaluation over the period from January 1990 to July 2023, extracted from the Web of Science database. 
  • 203
  • 20 Nov 2023
Topic Review
Geotourism and Ecotourism
The two forms of tourism, ecotourism and geotourism, are considered forms of experiential tourism, and they sometimes also raise questions such as about the differences between them in terms of their elements of attraction. Ecotourists, in addition to ecological activities related to natural attractions, add and focus seriously on the cultural side of the wild side, but also on the constructed, humanised, and culturalised sides of the countryside outside or close to purely geotouristic attractions (hence the assimilation of ecotourism with rural tourism or agrotourism).
  • 689
  • 20 Nov 2023
Topic Review
Dynamic Groundwater Contamination Vulnerability Assessment Techniques
Assuring the quantity and quality of groundwater resources is essential for the well-being of human and ecological health, society, and the economy. For the last few decades, groundwater vulnerability modeling techniques have become essential for groundwater protection and management. Groundwater contamination is highly dynamic due to its dependency on recharge, which is a function of time-dependent parameters such as precipitation and evapotranspiration. Therefore, it is necessary to consider the time-series analysis in the “approximation” process to model the dynamic vulnerability of groundwater contamination. 
  • 154
  • 20 Nov 2023
Topic Review
Ecotourism Development in Russian Areas under Nature Protection
Ecotourism has become an important area of development for Russian protected areas (PAs), which have begun to offer a variety of ecotourism services. Russia, along with other countries, adheres to a variety of concepts and tools for the development of ecotourism in PAs. Efforts are being made in the parks to create favorable conditions for ecotourism development. These efforts include improving management practices, implementing functional zoning strategies, developing conceptual and design solutions, developing infrastructure, securing funding, engaging local communities, and promoting ecotourism services. 
  • 416
  • 20 Nov 2023
Topic Review
Contaminant Removal in Different Constructed Wetland Types
Constructed wetlands (CWs) are artificially engineered treatment systems that utilize natural cycles or processes involving soils, wetland vegetation, and plant and soil-associated microbial assemblages to remediate contaminated water and improve its quality. CW treatment systems are typically categorized as free-water surface(FWSCWs), surface-flow constructed wetlands (SFCWs), subsurface-flow constructed wetlands (SSFCWs), and hybrid constructed wetlands (HCWs). Depending on the flow direction, Subsurface-flow CWs (SSFCWs) can be further classified into horizontal subsurface-flow (HSSF) and vertical subsurface-flow (VSSF) systems.
  • 168
  • 20 Nov 2023
Topic Review
Ultrasound-Enhanced Organic Wastewater Treatment Equipments
Ultrasound waves have been widely used in the field of organic wastewater treatment due to their mechanical, thermal, and chemical effects derived from their cavitation effect. Many researchers have combined ultrasound waves with other organic wastewater treatment methods because they have the potential to offset the disadvantages of other method.
  • 262
  • 17 Nov 2023
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