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Hydrogen Supply Chains Downstream – A Systematic Analysis of The Western U.S. 下游氢气供应链 - 对美国西部的系统分析
Pub Date : 2024-04-02 DOI: 10.5539/enrr.v14n1p24
Farzam Farahmand, James King, Davoud Ghahremanlou, Mohammadreza Moghaddas Jafari
This paper delves into the critical exploration of hydrogen supply chains downstream (HSCD) in the Western U.S., responding to the nation’s prioritization of hydrogen as a clean alternative and its ambitious Hydrogen Program Plan for net-zero emissions and enhanced exports. We develop a conceptual model which is utilized to identify gaps in the existing 116 regional and global review papers published from March 2020, the beginning of the COVID-19 pandemic, to November 2023. This leads us to HSCD segments, decision levels, research properties, and sustainability as the necessary criteria to analyze 48 peer-reviewed original journal papers published about HSCD in the Western U.S. until November 2023. Accordingly, we offer future research directions and contribute to the development of effective strategies for a sustainable hydrogen-based future.
本文深入探讨了美国西部氢气下游供应链 (HSCD) 的关键问题,以响应美国将氢气作为清洁替代品的优先考虑,以及其雄心勃勃的氢气项目计划,即实现净零排放和加强出口。我们建立了一个概念模型,并利用该模型找出了从 2020 年 3 月 COVID-19 大流行开始到 2023 年 11 月期间发表的 116 篇现有地区和全球综述论文中存在的差距。由此,我们将人类干细胞疾病的细分、决策水平、研究属性和可持续性作为必要标准,对 2023 年 11 月之前在美国西部发表的 48 篇有关人类干细胞疾病的同行评审原创期刊论文进行了分析。据此,我们提出了未来的研究方向,并为制定可持续氢基未来的有效战略做出了贡献。
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引用次数: 0
Tackling Environmental Problems: Are People and the Environment Antithetical? 解决环境问题:人与环境是对立的吗?
Pub Date : 2023-05-25 DOI: 10.5539/enrr.v13n1p19
Emilia N. Inman, Paul J. Inman
In the era where human communities have been plunged into unprecedented environmental problems, scientists and policymakers have been forced to revisit and reflect on the relationship between humanity and the natural environment. In light of all these developments, fundamental questions have been asked, such as, should nature be left alone? Are humans separate from nature? Is it too late to turn back the clock? How can we tackle the climate crisis? At the core of these questions lies the issue of the human-environment relationship, with humans being both dependent on and simultaneously harming the environment. Although the dependence of humans on natural systems is acknowledged, there seems to be uncertainty about balancing human well-being, ecosystem, and environmental integrity. It appears as though these three factors cannot co-exist harmoniously. In this contribution, we discuss the axioms of the environment and humanity and extract lessons that can be used to address the increased environmental concerns that have challenged the world. We also present a rationale for using an interdisciplinary, holistic approach to address environmental problems, proposing a Nature-integrated in Whole Systems Framework. We argue that environmental problems cannot be successfully addressed without incorporating human dimensions and treating systems as wholes. We base our argument on the fact that the challenges facing humanity are so intertwined that addressing one issue without considering the others is futile. We propose that we need to integrate nature into every aspect of life.
在人类社会陷入前所未有的环境问题的时代,科学家和决策者不得不重新审视和反思人类与自然环境的关系。鉴于所有这些发展,人们提出了一些基本问题,例如,应该让大自然独自存在吗?人类与自然分离了吗?让时光倒流是不是太晚了?我们如何应对气候危机?这些问题的核心是人与环境的关系问题,人类既依赖环境,同时又危害环境。虽然人类对自然系统的依赖是公认的,但在平衡人类福祉、生态系统和环境完整性方面似乎存在不确定性。看来这三个因素不能和谐共存。在这篇文章中,我们讨论了环境和人类的公理,并提取了可以用来解决日益严重的环境问题的经验教训,这些问题已经挑战了世界。我们还提出了一个使用跨学科的、整体的方法来解决环境问题的基本原理,提出了一个自然集成的整体系统框架。我们认为,如果不考虑人的因素并将系统作为一个整体来对待,环境问题就不能成功地解决。我们的论点基于这样一个事实,即人类面临的挑战是如此相互交织,只解决一个问题而不考虑其他问题是徒劳的。我们建议我们需要将自然融入生活的方方面面。
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引用次数: 0
Spatiotemporal Dynamic of Land Use/Land Cover Changes and Their Drivers in the Fincha' a-Neshe Sub-Basin, Southeastern Blue Nile Basin, Ethiopia 青尼罗盆地东南部Fincha' a-Neshe次流域土地利用/覆被变化时空动态及其驱动因素
Pub Date : 2023-04-01 DOI: 10.5539/enrr.v13n1p1
H. Abebe, A. Kebede, T. Alamirew, G. Desta
It is paramount to evaluate the spatiotemporal dynamics of land use and land cover (LULC) changes and their drivers. This is because it helps generate information on biodiversity, land productivity, ecology, and livelihoods for decision-making. Due to land degradation, deforestation, shifting cultivation, high population pressure, and the three national megaprojects (NMPs), the Fincha'a Neshe sub-basin (FNSB) LULC, changes may be unprecedented. This study aimed to investigate the spatiotemporal dynamics of LULC changes and their drivers using remote sensing (RS) data and geographic information systems (GIS). Landsat images 5, 7, and 8 were used for the discrete periods of 1986, 2000, and 2016, respectively. Field observations (Ground control points) and interviews were conducted with key participants to validate the data. Supervised classification with a maximum likelihood algorithm was used to classify the Landsat imagery. The results showed that the FNSB experienced substantial changes in LULC between 1986 and 2016, of which 13.8% (457.3 km2 ) were due to NMPs. The cropland cover has expanded by 694.4 km2 (57.81%) at a rate of 24.60 km2 year-1 at the expense of shrubland, forest, wetland, and grassland. In contrast, shrubland, forest, wetland, and grassland have declined at the rates of 16.8, 3.9, 3.4, and 1.7 km2 year-1 over the entire study period. Population growth and NMPs were the principal drivers of the changes in the LULC of the sub-basin. Thus, the LULC transformation rate observed in the sub-basin requires due attention and mitigation strategies, as it might seriously threaten the sustainability of natural resources and NMPs.
土地利用/土地覆被变化的时空动态及其驱动因素研究具有重要意义。这是因为它有助于为决策提供有关生物多样性、土地生产力、生态和生计的信息。由于土地退化、森林砍伐、轮作、高人口压力,以及三个国家大型项目(nmp),即芬恰纳什子流域(FNSB) LULC,可能会发生前所未有的变化。利用遥感(RS)数据和地理信息系统(GIS)技术,研究中国土地利用储量变化的时空动态及其驱动因素。陆地卫星图像5、7和8分别用于1986年、2000年和2016年的离散时期。实地观察(地面控制点)和访谈主要参与者以验证数据。采用最大似然监督分类算法对陆地卫星影像进行分类。结果表明:1986—2016年,FNSB的LULC发生了较大变化,其中13.8% (457.3 km2)的变化是由nmp引起的。耕地覆盖面积以年均24.60 km2的速度增加694.4 km2(57.81%),灌木林、森林、湿地和草地面积减少。相比之下,灌丛、森林、湿地和草地在整个研究期间以16.8、3.9、3.4和1.7 km2 /年的速度减少。人口增长和nmp是子流域土地利用价值变化的主要驱动因素。因此,在子流域观察到的土地利用资源转化率需要得到应有的重视和缓解战略,因为它可能严重威胁到自然资源和国家生态系统的可持续性。
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引用次数: 0
Influence of Different Land Management Systems on the Dynamics of Carbon Biodegradability and Nitrogen Mineralization in a Sudanian Savanah Grasslands Soil, Western Burkina Faso 不同土地管理制度对布基纳法索西部苏丹稀树草原土壤碳生物降解性和氮矿化动态的影响
Pub Date : 2022-11-25 DOI: 10.5539/enrr.v12n2p36
M. Yoni, A. W. Sempore, K. Dimobe
This study aimed to assess soil organic carbon (SOC) and total nitrogen (TN) dynamics under fallow lands influenced by the perennial grass Andropogon gayanus and to show how the biological activity is improved during the Sudanian tillage system in the area of Bondoukuy (Western Burkina Faso). Soil samplings were done through cultivated plots (CP), ten (F10) and twenty (F20) years old fallow lands. Measurements were done in thickets and intergrowth areas of the perennial grass in two horizons: the topsoil (0-10 cm) and the subsoil (10-20 cm). Results showed that SOC concentrations are generally higher in the old (0.35%) than in the young fallow lands (0.29%) and in the cultivated plots (0.23%). TN concentrations followed the same pattern (0.022%, 0.017% for the old and young fallows lands and 0.013% for the cultivated plots). The C:N ratio observed (15~20) suggests an important soil organic matter (SOC and TN) maturation state in the fallow lands (F10 and F20) than in the cultivated plots (CP). Soil mineralization is also more important in the two fallow lands than in fields. For the total nitrogen mineralization, we have an important production of mineral nitrogen always in old fallow lands and a positive effect of the thicket on the net mineral nitrogen accumulation (p<0.05). The transition from thicket to intergrowth area permits obtaining positive variations which are relatively significant (p<0.05). A. gayanus fallow lands play an active role in managing SOC and TN dynamics. The most SOC and TN accumulated was found in the topsoil of thickets, where the maximum plant debris is located. Old fallow lands are best conditions for the recovery of SOC and TN from their steady states. Then, when clearing the vegetation for cultivation after the old fallow lands, there is an important input of fresh OM available for plants in the soil for 3 or 4 years. It is recommended to observe the old fallow phase prior to clearing for cropping.
本研究旨在评估多年生草Andropogon gayanus对休耕地土壤有机碳(SOC)和总氮(TN)动态的影响,并揭示苏丹耕作制度下Bondoukuy地区土壤生物活性的改善情况。土壤取样通过耕地(CP)、10年(F10)和20年(F20)年的休耕地进行。在多年生禾草灌丛和间生区进行了表层土壤(0 ~ 10 cm)和底土(10 ~ 20 cm)两个层位的测量。结果表明:土壤有机碳(SOC)浓度总体上高于年轻休耕地(0.29%)和耕地(0.23%);全氮浓度变化规律相同(老幼休耕地0.022%,耕地0.017%,耕地0.013%)。C:N比值(15~20)表明,休耕地(F10和F20)土壤有机质(SOC和TN)成熟程度高于耕地(CP)。土壤矿化在两种休耕地也比在田间更为重要。在氮素矿化总量上,老休耕地对矿质氮的生产具有重要作用,灌丛对矿质氮的净积累具有正向影响(p<0.05)。从灌丛区向互生区过渡,获得了相对显著的正变化(p<0.05)。草芥休耕地对土壤有机碳和全氮动态具有积极的调控作用。土壤有机碳和全氮在灌丛表层土壤中积累最多,而灌丛表层土壤中植物残体最多。旧休耕地是土壤有机碳和全氮从稳定状态恢复的最佳条件。然后,在旧休耕地后清除植被进行耕作时,土壤中有3 - 4年可供植物使用的新鲜有机质的重要输入。建议在清理种植前观察旧的休耕期。
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引用次数: 0
Perception and Resilience Strategies of Livestock Farmers and Agro-Pastoralists Affected by Climate Change: Case of the urban commune of Tera, Niger 受气候变化影响的畜牧农民和农牧民的感知和恢复策略:以尼日尔特拉城市公社为例
Pub Date : 2022-11-25 DOI: 10.5539/enrr.v12n2p53
H. Abdou, Moussa S. Hassimi, Bassirou Habi, H. Marichatou
This study aimed to identify and strengthen the resilience of livestock and agro-pastoralists in the face of changing climatic conditions. The study was conducted in the urban commune of Tera. The methodological approach consisted of desk research and data collection. In order to find the number of households to be surveyed in the selected camps, the method of taking a sample (8%) of the target households is adopted. In total, forty-eight (48) herders and agro-pastoralists are selected. The analysis of the perception of the herders and agro-pastoralists on the climate trend showed a decrease in the amount of rainfall (94% of respondents), increasingly high temperatures (92%) and an increase in strong and sandy winds in all seasons (96%). The disappearance of plant cover was the main cause of climate change according to 79.2% of respondents. The impacts of climate change are numerous. Pastoral resources (water and fodder) have been greatly reduced. The health of the animals has been affected, as has their production. Strategies have been developed by farmers and agro-pastoralists to reduce or anticipate the negative effects of climate change. According to some respondents, the strategies have not fully met expectations.
本研究旨在确定和加强牲畜和农牧民面对不断变化的气候条件的适应能力。这项研究是在Tera的城市公社进行的。方法方法包括桌面研究和数据收集。为了在选定的营地中找到待调查的户数,采用目标家庭抽样(8%)的方法。总共有48名牧民和农牧民被选中。对牧民和农牧民对气候趋势的看法的分析显示,降雨量减少(94%的受访者),气温越来越高(92%),所有季节的强风和沙风增加(96%)。79.2%的受访者认为植被消失是气候变化的主要原因。气候变化的影响是多方面的。畜牧资源(水和饲料)大大减少。动物的健康受到了影响,它们的生产也受到了影响。农民和农牧民已经制定了减少或预测气候变化负面影响的战略。一些受访者表示,这些策略并没有完全达到预期。
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引用次数: 0
Physicochemical Analysis of Parameters Influencing Soil Loss for a Selected Location in North Central Nigeria Using Rainfall Simulator 利用降雨模拟器对尼日利亚中北部选定地点影响土壤流失参数的理化分析
Pub Date : 2022-08-02 DOI: 10.5539/enrr.v12n2p14
J. Musa, Otuaro Ebierin Akpoebidimiyen, Pius Olusegun Olufemi Dada, Eze Peter Chukwu, Jamil dams-Suberu
Developing a simple and proper model that can accurately predict runoff generation for various locations is in strong demand. This study developed a simple model based on the interactive effects of rainfall intensity and soil physicochemical properties on runoff using a locally produced rainfall simulator. The drop velocity (DV) was calculated to be 8.101m/s and 2.443 m/s when operated at maximum and minimum intensity, respectively, and the performance test revealed the experimental coefficient of uniformity (CU) and rainfall intensity from the simulator to be 79.86 % at 31.79 mmhr-1 and 78.03 % at 16.08 mmhr-1 at maximum and minimum intensity respectively. Results showed that the soils were loamy sand, with clay having the lowest percentage between 3.55% - 4% and sand having the highest percentage between 78.4% - 80.1% on both plots. Runoff significantly correlated with pH(H20), nitrogen and rainfall intensity for vegetative plot (p < 0.001, R2 = 86.29%) while for bare plot, runoff significantly correlated with pH (KCl), Electrical Conductivity, Exchangeable Calcium, and rainfall intensity (p < 0.001, R2 = 92.39%). This result revealed that rainfall intensity and alkalinity are key factors influencing runoff in the study location.
迫切需要开发一种简单而适当的模型,以准确预测不同地点的径流生成。本研究利用本地生产的降雨模拟器建立了一个基于降雨强度和土壤物理化学性质对径流相互作用的简单模型。试验结果表明,在最大和最小强度下,试验均匀性系数(CU)和降雨强度分别为79.86%和78.03%,在最大和最小强度下分别为31.79 mmhr-1和16.08 mmhr-1。结果表明,两样地土壤均为壤土,粘土含量最低,为3.55% ~ 4%,砂土含量最高,为78.4% ~ 80.1%。植被样地径流量与pH(H20)、氮素和降雨强度显著相关(p < 0.001, R2 = 86.29%),裸地径流量与pH(KCl)、电导率、交换钙和降雨强度显著相关(p < 0.001, R2 = 92.39%)。结果表明,降雨强度和碱度是影响研究区径流的关键因素。
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引用次数: 0
Challenges of Community-Based Management of Protected Areas: Contested Trade-offs Between Livelihood and Conservation Interests in Chyulu Hills National Park, Kenya 以社区为基础的保护区管理的挑战:肯尼亚Chyulu Hills国家公园生计和保护利益之间的有争议的权衡
Pub Date : 2022-07-31 DOI: 10.5539/enrr.v12n2p1
Samuel Kimani Kiumbuku
This was a formative study whose main aim was to obtain useful information for designing co-management interventions of Chyulu Hills National Park (CHNP) and other protected ecosystems in Kenya. Among the specific objectives that we have covered in this article were to; (1) examine the competing livelihood interests of communities living within the catchment of CHNP. (2) to assess the challenges that undermined community support towards co-management of the ecosystem. The findings showed that communities were highly dependent on park resources for both direct and indirect livelihood services. This over-dependence on the resources by local communities made it difficult for management agencies to control access to the protected area leading to illegal encroachment. There were gaps that required urgent attention to to ensure suatainable management of CHNP. First, communities were not engaged effectively when mangement decisions were being made but only received information on decisions that have already been made elsewhere and were required to abide by them. Secondly, incidences of human-wildlife conflicts jeopardized cooperation between communities and wildlife management agency. Thirdly, in spite of the protected area being in their neighbourhoods, community members felt entitled to the ecosystem resources and therefore they perceived it unfair that the authories kept them off from the National park. In conclusion, there was no balanced tradeoff between the livelihood interests of local communities and conservation interests of the National Park. To promote collaboration between the communities and wildlife management agencies in management of the park there was an urgent need to address the livelihood interests of the local communities.
这是一项形成性研究,其主要目的是为设计Chyulu Hills国家公园(CHNP)和肯尼亚其他受保护生态系统的共同管理干预措施获得有用的信息。我们在本文中讨论的具体目标包括:(1)研究生活在CHNP流域内的社区的竞争生计利益。(2)评估影响社区支持生态系统共同管理的挑战。研究结果表明,社区在直接和间接生计服务上高度依赖公园资源。当地社区对资源的过度依赖使管理机构难以控制进入保护区的通道,从而导致非法侵占。为确保CHNP的可持续管理,存在需要紧急注意的差距。首先,在作出管理决定时,社区没有有效参与,而只是收到关于其他地方已经作出的决定的信息,并被要求遵守这些决定。其次,人与野生动物冲突的发生破坏了社区与野生动物管理机构之间的合作。第三,尽管保护区就在他们的社区内,但社区成员认为有权获得生态系统资源,因此他们认为当局不让他们进入国家公园是不公平的。总之,在当地社区的生计利益和国家公园的保护利益之间没有平衡的权衡。为了促进社区和野生动物管理机构在公园管理方面的合作,迫切需要解决当地社区的生计利益。
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引用次数: 0
The Changes of Farmland by Using Spatial Cluster on the Case of BeiNan Township in Taiwan 基于空间集群的耕地变化研究——以台湾北南乡为例
Pub Date : 2022-05-27 DOI: 10.5539/enrr.v12n1p62
Wen-Ching Wang, Ya-Ting Chan
The main objectives of this study are, (1) to investigate the influences of farmland policies on land use patterns and, (2) to examine the changes and statuses of land transactions and farmhouse construction projects and determine the influence of changes in the restrictions of farmland use and farmhouse construction on the trends of farmland transactions and transfers and the locations of farmhouse constructions projects, thereby validating the development trends of farmland and farmhouses. Aspatial analysis was performed to examine the spatial clustering conditions and locations of farmland transactions and farmhouses in Taitung County. Regional analysis was performed by examining local indicators of spatial association (LISA). A year-over-year analysis was performed on the scope and degree of farmhouse clustering within the target area to determine farmland use patterns, distribution statuses, and the impact of annual location change on rural development in the target area. An analysis of the historical land transaction and building change data revealed that "laws and regulations" were the main factors influencing farmland transaction. The density of farmland transactions increased closer to main traffic routes. The findings of this study highlighted rural change and validated urban sprawl.
本研究的主要目的是:(1)考察农地政策对土地利用模式的影响;(2)考察农地交易和农家乐建设项目的变化和现状,确定农地使用限制和农家乐建设项目的变化对农地交易和转让趋势以及农家乐建设项目所在地的影响,从而验证农地和农家乐的发展趋势。采用空间分析方法,探讨台东县农地交易与农户住宅的空间集聚条件与区位。区域分析通过检测空间关联的局部指标(LISA)进行。通过对目标区内农家乐集聚的范围和程度进行逐年分析,确定目标区内农田利用模式、分布状况以及年度区位变化对农村发展的影响。对历史土地交易和建筑变化数据的分析表明,“法律法规”是影响农地交易的主要因素。靠近主要交通干线的农田交易密度增加。这项研究的结果强调了农村的变化,并证实了城市的蔓延。
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引用次数: 0
Novel Approach to Well Tests Data Processing 试井数据处理新方法
Pub Date : 2022-05-27 DOI: 10.5539/enrr.v12n1p80
J. Gregor, F. Pastuszek
A new bounded well function is suggested for processing well tests data. A solution of the basic partial differential equation with physically meaningful initial and boundary conditions is given using its Laplace transform simultaneously with the proof of its unicity. A model for distance-dependence of drawdown is suggested. Results reveal the link between unsteady and steady state of pumping. Related computational problems are discussed. Examples of processing actual data using these results are presented. They illustrate high accuracy of results and a considerable increase of information obtainable from a well test.
提出了一种新的有界井函数来处理试井数据。利用基本偏微分方程的拉普拉斯变换,给出了具有物理意义的初始条件和边界条件的解,并证明了其唯一性。提出了一种距离依赖的降程模型。结果揭示了泵送非稳态与稳态之间的联系。讨论了相关的计算问题。给出了利用这些结果处理实际数据的实例。它们说明了结果的高准确性,并且从试井中获得的信息大大增加。
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引用次数: 0
Overview of Researches on Bush Fires for Natural Resources and Environmental Management in Ghana: A Review 加纳森林火灾自然资源与环境管理研究综述
Pub Date : 2022-05-26 DOI: 10.5539/enrr.v12n1p48
Kueshi Sémanou Dahan, R. Kasei
Research in the world, and more specifically in Africa, on various subjects requires knowledge of previous work from several angles in order to orientate possible research. Thus, the literature review is considered the most suitable approach to have a more complete idea of the innovations or studies carried out on varied topics. To this end, on the issues of vegetal cover protection, environmental management and wildland fire in Ghana, we have adopted this review approach to identify the works already done in Ghana on wildland fire, the methodologies and angles that studies approached their objectives. This paper aims to review and provide a comprehensive report on research works done on the vulnerable vegetation of Ghana by bush fires. Thus, studies published from 1940 to 2021 were extracted from Research Gate, Google Scholar and Google and other indexed journal sites such as Scopus journals using a defined selection criterion. A total of 136 documents: these include reports of international organisations and relevant articles extracted. However, 52 of them were used for this review to better understand their approach and to highlight research gaps that could make those researches innovative. It is noted that most of the research done in Ghana on wildland fire analysis has little or no consideration for the influence of climatic and environmental parameters on understanding wildland fire behaviour, though some respondents from some research show their awareness of the role these parameters play on the fire propagation. However, it should be noted that the majority of studies have focused more on sociological and economic aspects. This observation thus reflects gaps in areas regarding the roles of climatic and environmental parameters in different ecological conditions to better assess the behaviour of wildfires in Ghana.
在世界上,更具体地说,在非洲,关于各种主题的研究需要从几个角度了解以前的工作,以便确定可能的研究方向。因此,文献综述被认为是最合适的方法,可以更全面地了解在不同主题上进行的创新或研究。为此,在加纳的植被保护、环境管理和野火问题上,我们采用了这种审查方法来确定加纳在野火方面已经完成的工作,以及研究接近其目标的方法和角度。本文旨在回顾并提供一份关于加纳丛林火灾中脆弱植被的研究工作的综合报告。因此,从1940年至2021年发表的研究是根据明确的选择标准从Research Gate、Google Scholar和Google以及其他有索引的期刊网站(如Scopus期刊)中提取的。共136份文件:其中包括国际组织的报告和摘录的相关条款。然而,本综述使用了其中的52个,以更好地了解他们的方法,并突出可能使这些研究具有创新性的研究差距。值得注意的是,在加纳进行的大多数关于野火分析的研究很少或根本没有考虑气候和环境参数对理解野火行为的影响,尽管一些研究的受访者表明他们意识到这些参数对火灾传播的作用。然而,应该指出的是,大多数研究更多地集中在社会学和经济方面。因此,这一观察结果反映了在不同生态条件下气候和环境参数的作用方面存在的差距,以便更好地评估加纳野火的行为。
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引用次数: 0
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Environment and Natural Resources Research
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