Ecological Terms Research Articles

Review of Methods for Converting Biomass into Biofuels

Thermochemical processes are among the most effective methods of obtaining hydrogen-rich gases from biomass. These technologies mainly include pyrolysis, gasification and hydrothermal liquefaction. Thermochemical conversion of dry biomass is similar to the conversion of fossil fuels using gasification and pyrolysis methods. Products obtained through thermochemical processes (CO and CH4) can be processed into other biofuels, e.g. syngas, a raw material for producing synthetic hydrocarbons, methanol and alcohols. In recent years, advanced research has been carried out using biomass to produce liquid fuels. The biomass pyrolysis process in the presence of a catalyst is based on the rapid heating of the biomass to a temperature of approximately 500°C in the so-called inert atmosphere in which there are no reactive gases. This process produces a liquid product: pyrolysis oil, gas and charcoal. The bio-oil produced in this process constitutes 60-75% of the mass of the biofuel and is thermally unstable because it contains up to 300 different chemical compounds. However, the bio-oil obtained in this way is incompatible with conventional liquid transport fuels (gasoline, diesel) due to its high oxygen content. Pyrolysis in the presence of a zeolite catalyst is a process that allows for the effective conversion of biomass in economic and ecological terms. A zeolite catalyst makes it possible to remove oxidized compounds in situ and modify the properties of the biofuel to ensure its compatibility with conventional transport fuels. The catalyst plays a crucial role in this process because it removes oxygen from oxygenates and, consequently, creates stable reaction products that can then be treated to obtain renewable transport fuels or other useful chemicals. The article presents methods of biomass conversion via pyrolisis, microorganisms usage, zeolite-based catalysis, biocatalysis and photo-fermentation, which poses a big possibility of diversification of renewable energy sources.

Assessing the Feasibility and Socioecological Benefits of Climate-Smart Practices at the Watershed Scale

Resource allocation in climate-smart productive practices depends on the explicit recognition and accountability of the expected costs and benefits in socioeconomic and ecological terms. This study assessed the private and social costs and benefits of 10 practices compatible with the transition to sustainable agricultural practices under an integrated landscape management (ILM) approach. First, the financial and economic viability of the alternatives was evaluated with a cost-benefit analysis. Then, the potential contribution of these practices in terms of carbon sequestration and landscape connectivity was determined in an ILM scenario where at least three practices (live fences, isolated trees in pastures, and riparian vegetation recovery) could be implemented and assessed at the watershed scale. These practices were evaluated in three Mexican pilot watersheds with contrasting biophysical and sociocultural contexts but with high importance in biodiversity conservation and cattle production. The results showed that most climate-smart practices are viable in the medium and long term from a private standpoint. However, more significant benefits are achievable over a shorter period when social co-benefits are included. The results could contribute to decision-making in terms of public policy, providing evidence of the financial and economic feasibility of the analyzed climate-smart practices that also have ecological benefits. In this sense, decision-makers who promote such practices have more arguments to seek funding for implementation.

Sentinel protist taxa of the McMurdo Dry Valley lakes, Antarctica: a review

High-latitude meromictic lakes such as those in the Antarctic McMurdo Dry Valleys (MDV) harbor aquatic ecosystems dominated by the microbial loop. Within this habitat, which is limited year-round by light and nutrients, protists, or single celled eukaryotes, play outsized roles in the food web as the dominant primary producers and the apex predators. Thus, the MDV lake ecosystem represents an ideal system to study the role of sentinel protist taxa in carbon and nutrient cycling. The perennially ice-covered lakes are part of the McMurdo Long Term Ecological Research (McM LTER; mcmlter.org) established in 1993. In this review we will highlight the diversity and trophic roles of the MDV lake protist community and compare environmental factors driving spatiotemporal patterns in key protist taxa in two lakes within the McM LTER, Lakes Bonney and Fryxell. We will then discuss lessons learned from manipulated experiments on the impact of current and future climate-driven environmental change on sensitive protist taxa. Last, we will integrate knowledge gained from 25 years of lab-controlled experiments on key photosynthetic protists to extend our understanding of the function of these extremophiles within the MDV aquatic food webs. Our research group has studied the distribution and function of the MDV microbial community for nearly two decades, training the next generation of scientists to tackle future problems of these globally significant microbes. This review article will also highlight early career scientists who have contributed to this body of work and represent the future of scientific understanding in the Anthropocene.

“Autumn”: John Clare and the Altered Fenland

abstract: The draining of the fens has been described as “England’s greatest ecological disaster.” This article delineates how John Clare’s ‘flitting’ to Northborough in the spring of 1832 fatefully coincided with a new, more efficient—or, in ecological terms, more disastrous— era of wetland drainage projects in the late 1820s and 30s. Focusing on his late (and sadly neglected) prose essay “Autumn” (1841), I explore how Clare recalls and recasts some of the enduring themes of both Romanticism and his own early poetry as he surveys the ecological disaster he had lived to see unfold.

Calculation and Cause Analysis of Hidden Unemployment—A Case Study of the Northeast State-Owned Forest Areas in China

The Northeast State-owned Forest Areas comprise the largest region of resources in China. The transformation of the Northeast State-owned Forest Areas is due to various stimuli, such as policies, systems, and markets. In the context of ecological construction and the reform of the state-owned forest system in Northeast China, these have undergone a transformation in terms of economy, society, and ecology. However, a mismatch persists between employment and industrial structures, leading to hidden unemployment. This study employs the framework of hidden unemployment theory, utilizing the Cobb–Douglas production function to quantify the hidden unemployment rate, revealing the relationship between transformation and hidden unemployment. Through this analysis, the underlying causes of hidden unemployment in Northeast China’s state-owned forest regions are scrutinized. There is a bidirectional causal relationship between ecological transformation and hidden unemployment, while there is a unidirectional causal relationship between economic transformation and hidden unemployment. Variance decomposition analysis highlights the substantial contribution of social transformation, followed by economic transformation, with ecological transformation playing a comparatively smaller role. Based on the above research, this article proposes expediting the reforms within the forest industry groups, facilitating the separation of governmental and corporate interests. Additionally, it advocates for strategic forestry development planning to effectively absorb surplus labor, and proposes three policy directives aimed at supporting forest area employees, including provisions for job transfers and reemployment opportunities.

Do we speak one language on the way to sustainable soil management in Europe? A terminology check via an EU‐wide survey

AbstractEuropean soils are under increasing pressure, making it difficult to maintain the provision of soil ecosystem services (SESs). A better understanding of soil processes is needed to counteract soil threats (STs) and to promote sustainable soil management. The EJP SOIL programme of the EU provides a framework for the necessary research. However, different definitions of soil‐related terms potentially lead to varied understandings of concepts. Furthermore, there are numerous indicators available to quantify STs or SESs. As unclear communication is a key barrier that hinders the implementation of research results into practice, this study aimed to answer the question about whether the terminology of large‐scale initiatives is adequately understood within the soil‐science community and non‐research stakeholders. An online questionnaire was used to provide definitions for 33 soil‐related terms in both scientific and plain language, as well as indicators for seven SESs and 11 STs. Participants were asked to rate their agreement with the definitions and indicators on a seven‐grade Likert scale. The level of agreement was calculated as the percentage of ratings above 4, the neutral position. The survey was available from June to September 2023 and was distributed by a snowball approach. More than 260 stakeholders assessed the survey; 70% of respondents were researchers, and 15% were practitioners. Mean agreement levels for the definitions and indicators were generally high, at 85% and 78% respectively. However, it was apparent that the lowest agreement was found for terms that are relatively new, such as Ecosystem Services and Bundle, or unfamiliar for certain subgroups, such as ecological terms for stakeholders working at the farm scale. Due to their distinct majority, the results of this study primarily reflect the opinions of scientists. Thus, broad conclusions can only be drawn by comparing scientists with non‐scientists. In this regard, the agreement was surprisingly high across all types of questions. The combined outcomes indicate that there is still a need to facilitate communication between stakeholders and to improve knowledge distribution strategies. Nevertheless, this study can support and be used by future projects and programmes, especially regarding the harmonization of terminology and methods.

A KAJIAN LOKASI UNTUK OCEANARIUM DI SURABAYA: KESEIMBANGAN ANTARA WISATA, PENDIDIKAN DAN RISET

This research examines the siting factors of an oceanarium in Surabaya, Indonesia. The research stems from the need to explore the optimal location for an oceanarium, taking into account the main objectives and functions of the development. The research aims to determine the most suitable location for an oceanarium, with recreation, education, conservation and research being the main considerations. The methodology involved a qualitative analysis of location factors, including accessibility, availability of natural resources, and environmental and socio-economic impacts. The discussion in this study emphasizes the importance of choosing a location that not only supports the oceanarium's objectives but also takes into account the availability of quality seawater resources. The ideal location recommended is an area adjacent to a clean source of seawater and protected from contamination, such as a location away from a river mouth. In addition, the location should be easily accessible to visitors and support recreation, education, conservation and research activities. The conclusion of this study shows that the best location for oceanarium development in Surabaya is the coastal area that fulfills these criteria, namely Kenjeran Lama beach and Ria Kenjeran Beach. This location stands out as the most strategic location in terms of access and travel time. These locations not only support the sustainability of the oceanarium in terms of ecology but also provide added value in terms of economy, education, recreation and research. This research provides valuable guidance for future oceanarium development, both in Surabaya and other locations in Indonesia.

Sustainable farm work in agroecology: how do systemic factors matter?

AbstractAgroecological farming is widely considered to reconcile improved working and living conditions of farmers while promoting social, economic, and ecological sustainability. However, most existing research primarily focuses on relatively narrow trade-offs between workload, economic and ecological outcomes at farm level and overlooks the critical role of contextual factors. This article conducts a critical literature review on the complex nature of agroecological farm work and proposes the holistic concept of sustainable farm work (SFW) in agroecology together with a heuristic evaluation framework. The latter was applied to ten case studies to test its relevance, affirming positive outcomes of agroecology on SFW, such as improved food sovereignty, biodiversity conservation, and social inclusiveness, but also showing trade-offs, including increased workload and potential yield reductions. Further, results show that contextual factors, such as policy support, market regulation, and access to resources, heavily influence the impact of agroecological practices on SFW. This article strongly argues for the importance of a holistic understanding of SFW and its contextualization within multiple socio-ecological system levels. The proposed framework establishes clear relationships between agroecology and SFW. An explicit recognition of these multidimensional relationships is essential for maximizing positive outcomes of agroecology in different contexts and fostering SFW. On a theoretical level, this research concludes that, from a holistic perspective, work is an entry point to studying the potential of agroecology to drive a sustainable agroecological transition in economic, social, and ecological terms.

DNA metabarcoding reveals the impact of Cu2+ on soil cercozoan diversity

Although copper (Cu2+) is a micronutrient, the metal may be toxic if present in high concentrations in soil ecosystems and subsequently affect various organisms, ranging from microorganisms to earthworms. We performed a microcosm study with an array of Cu2+ concentrations, with a specific focus on Cercozoa, an important protozoan group in most soil food webs. Research on Cercozoa is still scarce in terms of both diversity and ecology; hence, to explore this group in more depth, we used high-throughput sequencing to detect Cu2+ induced community changes. Increased levels of Cu2+ caused a shift in the cercozoan community, and we observed decreased cercozoan relative abundance across the majority of orders, families and genera. Due to their key role in soil food webs, especially as bacterial predators and providers of nutrients to plants, the reduction of cercozoan abundance and diversity may seriously affect soil functionality. Our results indicate that the increase of Cu2+ concentrations in the soil could potentially have this effect and the consequences need exploration.

Analysis of Performance Parameters of Engines with Spark Ignition with Variable Regulations of the Fuel-Injection System, Powered by E100 Fuel

Emission limits imposed on gas-powered vehicles, which have gradually been introduced by the European Commission, as well as the exhaustibility of the planet’s natural resources involve the need to search for alternative solutions and restore renewable fuel markets. In terms of ecology, using biofuels for powering spark-ignition engines has a positive impact on the natural environment. This kind of fuel, however, has a negative effect on the drive unit performance parameters, such as power and torque. This study presents test results of performance parameters of a spark-ignition engine fueled by E100 (pure ethanol). Parameters that have been analyzed are power, torque, exhaust emission components (oxygen, carbon dioxide, hydrocarbons), solid particles included in exhaust gases and emission of noise generated by the drive unit. The vehicle control system software adjustments have also been tested. Twelve regulations have been tested to evaluate performance parameters of a spark-ignition engine powered by E100 fuel. An analysis of the test results has confirmed the advisability of the introduction of control system software regulation. The aim of the work was to develop a model that will help select the appropriate software adjustment for an engine powered by E100 fuel. Due to the introduced emission restrictions, there is an important issue that concerns users of combustion vehicles. The research presented in the manuscript concerns a joint analysis of the engine’s fueling with alternative fuel and the introduction of changes to its software in order to reduce emissions.

Pengelolaan Budi daya Rumput Laut dengan Pendekatan Sosial-Ekonomi dan Ekologi di Pulau Pari

Seaweed plays an essential role in the people's economy in Pari Island because its cultivation has been the main livelihood for a long time. Currently, seaweed cultivation activities are no longer found, possibly due to tourism activities that directly degrade the cultivation activities. The purpose of this study is to evaluate the status of sustainability and determine the strategy of cultivation management in 5 aspects: ecological, social, economic, institutional, and infrastructure. Data were collected from primary and secondary sources related to socio-ecology in Pari Island. The assessment of the level of sustainability in each dimension was carried out using multidimensional scaling analysis, and a fairly sustainable average suitability value was obtained, namely the infrastructure (73.37), institutional (71.24), ecological (62.48), and economics (62.16). Meanwhile, the dimension with a very suitable sustainability value is the social dimension, with a value of 76.33, meaning that it is very suitable. Overall, the sustainability of seaweed cultivation, if viewed from several dimensions, shows the level of suitability of cultivation, both in terms of infrastructure, institutions, ecology, and economics. However, several dimensions, such as economic and ecological dimensions, must still be considered and continue to be encouraged so that sustainability can be achieved in all dimensions.
  
 Keywords: cultivation, management, Pari Island, seaweed, socio-ecology

A prospective longitudinal study on the elimination trend of rural cutaneous leishmaniasis in southeastern Iran: Climate change, population displacement, and agricultural transition from 1991 to 2021

Leishmaniasis is a complex disease. Any change in weather conditions affects the humans' social and agricultural expansion and, consequently, the parasite's life cycle in terms of ecology, biodiversity, social stigma, and exclusion. This population-based prospective longitudinal investigation was conducted between 1991 and 2021 in a well-defined CL (cutaneous leishmaniasis) focus in Bam County, southeastern Iran. A robust health clinic and health surveillance system were responsible for the ongoing systematic documentation, detection, identification, and management of CL cases. The exponential smoothing method via the state space model was used in the univariate time series. The TTR, smooth, and forecast packages were used in R software. Landsat satellite images from 1991, 2001, 2011, and 2021 were employed in the physical development. During this period, the temperature increased while the rainfall and humidity decreased. The findings showed a downward trend in the standardized drought index. Also, the results showed that climate warming and ecological changes profoundly affected the area's agricultural patterns and topographical features. Furthermore, the last three decades witnessed an elimination trend for zoonotic CL (ZCL) and the predominance of anthroponotic CL (ACL). The present findings showed that the critical factors in the predominance of ACL and elimination of ZCL were rising temperature, drought, migration, unplanned urbanization, earthquake, and agrarian reform. The wall-enclosed palm tree gardens excluded the primary ZCL reservoir host. They controlled the disease while providing suitable conditions for the emergence/re-emergence of ACL in the newly established settlements and the unplanned ecozone. Therefore, robust health infrastructures, sustained financial support, and evidence-based research studies are crucial to facilitating the necessary surveillance, monitoring, and evaluation to control and eliminate the disease.

ANALYSIS OF THE FEASIBILITY OF REFURBISHING USED OILS FOR SUBSEQUENT APPLICATION IN MILITARY VEHICLES DURING COMBAT OPERATIONS

The increased consumption and production of petroleum products have led to a rise in the volumes of used motor oils, which has become an urgent issue in terms of ecology and economic feasibility. The production and use of motor oils involve complex processes associated with significant energy and financial expenses. Therefore, there is a growing interest in finding effective solutions for the rejuvenation and processing of used motor oils for further utilization. This would reduce the negative environmental impact and preserve natural resources. The purpose of this scientific article is to conduct an analysis of the feasibility of motor oil recovery and evaluate the economic viability of their subsequent use in petroleum refining processes. Through a systematic study of this issue, we aim to identify optimal approaches to the recovery and rational use of used motor oils, contributing to the creation of a more sustainable and environmentally friendly energy system. To achieve this goal, we will examine existing motor oil recovery technologies, their effectiveness, advantages, and disadvantages. We will also analyze the impact of recovery on the quality of petroleum products and overall economic development. The findings outlined in the article can serve as a basis for the development of strategies and policies in the field of petroleum production aimed at ensuring sustainable development and resource optimization. Keywords: recovery of motor oils, regeneration and recycling technologies, efficiency of oil recovery, impact on the quality of petroleum products, economic analysis of processing, sustainable approaches to processing, prospects for sustainable development methods, cost of recovery and production, ecological sustainability of technologies, indicators of utilization efficiency.

The Growth Rate of Cyphastrea Coral Fragment Under Controlled Condition

The role of corals was very important in coastal and marine ecosystems, whether in terms of education, ecology, and socio-economy. Coral growth can be used as an indicators of marine ecosystem health. This study was aimed to observed survival rate and the growth rate of Cyphastrea coral fragments. Cyphastrea coral fragments growth rate was observed in ex-situ sites and was conducted over a period of 3 months. The micro-fragmentation method was applied in this study. Several factors such as water temperature, light levels, and nutrient concentrations were measured and controlled throughout the study. The growth rate of Cyphastrea coral fragments was measured using ImageJ software. Result of this study exhibited that survival rate of Cyphastrea was 100% and the growth rate of Cyphastrea was 0.012 cm2/month. This study provides important information on the factors that affect the growth rate of Cyphastrea coral fragments in ex-situ sites. The result of this study can be used to develop more effective strategies for coral reef restoration.

THREE-DIMENSIONAL BROWNFIELDS: THE TRAGEDY OF THE MINING COMMUNITIES

The processes of active restructuring in the mining industry of many countries have entailed the physical closure of enterprises, accompanied by measures to mitigate their environmental and social impacts. Brownfields that emerged in districts with developed mining industries are predominantly perceived through a stereotypically flat, superficial, and narrowly literal lens. Adhering to such an approach is risky both in terms of ecology and in the aspect of economic losses incurred in territories with concentrated localization of mines. The article provides substantiation for the importance of perceiving brownfields within a threedimensional space, with due consideration given to geological deformations, dynamics of underground water and gas flows, and the potential of gravitational and geo-thermal energy. The authors propose interpreting brownfields as either oper ating or abandoned industrial sites with buildings and infrastructure facilities on the ground surface, as well as natural landscapes that are negatively affected by geological, hydrodynamic, and gas-dynamic processes characteristic of the disturbance of the subsoil due to underground or open-pit mining operations. The reuse and recycling of industrial waste accumulated within brownfields alone cannot ensure the survival of coal-mining towns. Similarly, depopulation cannot be halted solely through economic instruments. Thus, the strategy for the development of coal-mining towns should entail ‘enlightened’ restructuring in line with the ideas of ‘Smart Shrinking’.

PHYTOPLANKTON IN THE LAKES OF THE REPUBLIC OF BASHKORTOSTAN

The phytoplankton in a number of lakes in the Bashkir Trans-Urals (Atavdy, Sultankul (2017), Bursunsy, Kuldybay (2019), Bolshiye Uchaly, Uzunkul (2021)) and Bashkir Pre-Urals (Bolshoy Tolpak, 2022)) was studied. As a result of the study, the taxonomic structure, quantitative characteristics, dominant species, distribution features of main algal groups were reveald, and their ecological and geographical characteristics werre identified. 257 species and intraspecific taxa of algae from 9 divisions were registered in the algal flora. Green algae (33%), cyanoprokaryotes and diatoms (21% each of total species number) show the highest species diversity in the lakes. The algal flora is specific for each lake and has low degree of floristic similarity (0.13–0.57 according to Sørensen coefficients). In the ecological and geographical terms, the algal floras of lake plankton is represented by typical planktonic species, widespread in waterbodies of the globe, indifferent to water salinity, living only in fresh waterbodies and preferring neutral waters. Quantitative indicators of phytoplankton varied in a wide range of values: number of cells from 4.4 to 344 mln cells/L, biomass from 0.23 to 22.97 mg/L. Dominant species in terms of abundance are represented predominantly by cyanoprokaryotes (Snowella lacustris, Aphanocapsa delicatissima, A. incerta, Aphanizomenon flos-aquae, Gloeotrichia echinulata, Merismopedia tenuissima, Pseudanabaena galeata, Planktolyngbya limnetica, Woronichinia compacta, Anathece clathrata, Rhabdoderma lineare), in terms of biomass by green (Oocystis lacustris, O. borgei, O. marssonii, Scenedesmus apiculatus), dinophyte (Peridinium cinctum, Gymnodinium sp., Ceratium furcoides), desmidium algae (Staurodesmus cuspidatus, Cosmarium contractum, C. cucumis) and cyanoprokaryotes (Pseudanabaena galeata, Aphanizomenon flos-aquae, Gloeotrichia echinulata). According to the value of the saprobity index (Pantle – Bucc by number 1.57–2.80), the lake waters correspond to β- and α-mesosaprobic types of waterbodies with III and IV water quality classes (moderately polluted or dirty water).

Dynamic assessment of eco-civilization in Guangdong Province based on geographic information system (GIS) and analytic hierarchy process (AHP)

Based on the data from 2017 to 2021, this paper uses the organic combination of Geographic Information System (GIS) and Analytic Hierarchy Process (AHP) to conduct a dynamic evaluation of the standard of Guangdong's ecological civilization. The results clearly reveal that: (1) the Guangdong Province's ecological civilization is 46.31 % above the Chinese average, but growth is uneven across cities; (2) the fluctuation of the level of eco-civilization building in the province declines more obviously; (3) cities perform differently in different dimensions of eco-civilization building, most cities in Guangdong exhibited positive performance in terms of ecology and environment, but poor performance in terms of economic development and social construction; (4) economic benefits have a strong positive influence on the level of eco-civilization building in Guangdong Province. Finally, targeted suggestions are made for the construction of eco-civilization in Guangdong Province.

Modelling and implementation mechanisms for power assessment under ecological environment and sustainable development

Abstract In this paper, the constraints faced by the power sector in terms of energy, economy and ecology are first studied in depth, and the relationship between investment efficiency and new power development is explored by using the Data Envelopment Analysis (DEA) method. Secondly, the parameters of the least squares support vector machine (LSSVM) model are optimized based on phase space reconstruction and the artificial bee colony (ABC) algorithm, and an optimized ABC- LSSVM wind abandonment power assessment model is proposed. Finally, the proposed wind power abandonment assessment model’s accuracy and precision are verified by comparing it to the traditional maximum probability method. The results show that the evaluation result obtained by using the traditional maximum probability method is 4580.15 MWh, and the evaluation result of the ABC-LSSVM algorithm is 5123.12 MWh, while the actual output power is calculated as 4975.63 MWh, which indicates that the ABC-LSSVM algorithm is better than the traditional maximum probability method model in the evaluation of wind power abandonment. This paper accurately evaluates the wind power abandoned by wind turbines, which is of guiding significance for realizing wind reuse and rational planning of the power grid.

Gender Gap in Food Security and Nutrition: Special Case of India in the G20

The sustainability of food security and adequate nutrition is a global challenge. The G20 nations, representing two-thirds of the global population bear half of the world’s malnutrition burden in the form of either excessive or inadequate intake of nutrition. The general risks associated with food insecurity in terms of climate change, ecology and resource contraction vis-à-vis population are macro issues involving the global commons. This article which relates to the micro issue of the gender gap in household food security is based on public data and international indices on the status of food security and the gender gap. The study indicates the presence of a gender gap in nutrition for reasons more socio-cultural, than economic. The study is focused on G20 nations, especially India as it bears the largest burden of nutrition-related disease within the G20. Data from the Global Hunger Index and the Global Gender Gap Index of 2022 has portrayed India as a dismal performer despite the fact that India runs the largest public food security programme that has targeted nutrition programs for women beneficiaries. The present article identifies the common challenges faced by the G20 nations in the realm of food security and the steps taken for mitigation. The article also examines cooperation within G20 in realising the Sustainable Development Goals related to ending hunger and realising gender equity in food.

Investigation of Access to Active Green Areas and Parks in Terms of Political Ecology: The Case of Bursa City

Kentsel arazi kullanım biçimlerinden olan yeşil alan ve parklar, insanların rekreasyon ihtiyacını karşılarken bu alanların yer tahsisi, projelendirilmesi, alansal büyüklüğü ve erişilebilir olması üzerinde yerel politik kararlar etkilidir. Bu bağlamda Bursa şehrinde hali hazırda bulunan aktif yeşil alanların erişilebilirlik düzeylerini politik ekoloji açısından incelemek çalışmanın amacını oluşturmaktadır. Aktif yeşil alanların yürüme mesafesinde (500 m) erişim düzeylerini incelemek için ArcGIS 10.8 programında Network Analyst aracı kullanılarak mevcut ulaşım ağları ile aktif yeşil alanlar arasında servis ağları belirlenmiştir. Yapılan analiz sonucunda 29 mahalle tam (212.807 kişi), 89 mahalle yarı (1.031.332 kişi), 83 mahalle kısmi (687.666 kişi) ve 69 mahallede (151.666 kişi) aktif yeşil alanlara erişimin olmadığı bilgisine erişilmiştir. Elde edilen bilgiler, Bursa şehrinde yeşil alanlara erişimde mekânsal farklılıkların olduğunu göstermiştir.