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Tomáš Hlásny Ivan Barka Ladislav Kulla Tomáš Bucha Róbert Sedmák Jiří Trombik 《Regional Environmental Change》2017,17(1):65-77
European forestry is facing many challenges, including the need to adapt to climate change and an unprecedented increase in forest damage. We investigated these challenges in a Norway spruce-dominated mountain region in Central Europe. We used the model Sibyla to explore forest biomass production to the year 2100 under climate change and under two alternative management systems: the currently applied management (CM), which strives to actively improve the forest’s adaptive capacity, and no management (NM) as a reference. Because biodiversity is thought to have mostly positive effects on the adaptive capacity of forests and on the quality of ecosystem services, we explored how climate change and management affect indicators of biodiversity. We found a differential response across the elevation-climatic gradient, including a drought-induced decrease in biomass production over large areas. With CM, the support of non-spruce species and the projected improvement of their growth increased tree species diversity. The promotion of species with higher survival rates led to a decrease in forest damage relative to both the present conditions and NM. NM preserved the high density of over-matured spruce trees, which caused forest damage to increase. An abundance of dead wood and large standing trees, which can increase biodiversity, increased with NM. Our results suggest that commercial spruce forests, which are not actively adapted to climate change, tend to preserve their monospecific composition at a cost of increased forest damage. The persisting high rates of damage along with the adverse effects of climate change make the prospects of such forests uncertain. 相似文献
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Gopal Datt Bhatta Hemant Raj Ojha Pramod Kumar Aggarwal V. Rasheed Sulaiman Parvin Sultana Dhanej Thapa Nimisha Mittal Khemraj Dahal Paul Thomson Laxman Ghimire 《Environment, Development and Sustainability》2017,19(2):497-525
While impacts of climate change on agricultural systems have been widely researched, there is still limited understanding of what agricultural innovations have evolved over time in response to both climatic and non-climatic drivers. Although there has been some progress in formulating national adaptation policies and strategic planning in different countries of South Asia, research to identify local-level adaptive strategies and practices is still limited. Through eight case studies and a survey of 300 households in 15 locations in India, Nepal and Bangladesh, this paper generates empirical evidence on emerging agricultural innovations in contrasting socio-economic, geographical and agro-ecological contexts. The study demonstrates that several farm practices (innovations) have emerged in response to multiple drivers over time, with various forms of institutional and policy support, including incentives to reduce risks in the adoption of innovative practice. It further shows that there is still limited attempt to systematically mainstream adaptation innovations into local, regional and national government structures, policies and planning processes. The paper shows that the process of farm-level adaptation through innovation adoption forms an important avenue for agricultural adaptation in South Asia. A key implication of this finding is that there is a need for stronger collaborations between research institutions, extension systems, civil society and the private sector actors to enhance emerging adaptive innovations at the farm level. 相似文献
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Philip Antwi-Agyei Lindsay C. Stringer Andrew J. Dougill 《Regional Environmental Change》2014,14(4):1615-1626
Climate variability poses a significant threat to many sectors of Sub-Saharan Africa’s economy. Agriculture is one of the most climate sensitive sectors because of its dependence on rain-fed cultivation. This paper identifies the main adaptation strategies used by farming households in the Sudan savannah and forest-savannah transitional agro-ecological zones of Ghana, in order to reduce the adverse impacts of climate variability on their livelihood activities. It combines questionnaire surveys, key informant interviews and a range of participatory methods. Results show that households employ a range of on- and off-farm adaptation strategies including changing the timing of planting, planting early maturing varieties, diversification of crops, support from family and friends, and changing their diets to manage climate variability. Results reveal that most households use adaptation strategies linked to livelihood diversification to adapt to the increased climate variability seen in recent decades. Most households now engage in multiple non-arable farming livelihood activities in an attempt to avoid destitution because of crop failure linked to climate variability (particularly drought). The findings suggest that policy makers need to formulate more targeted climate adaptation policies and programmes that are linked to enhancing livelihood diversification, as well as establishing communication routes for farming communities to better share their knowledge on successful local climate adaptation strategies. 相似文献
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Climate-related hydrological change and human vulnerability in remote mountain regions: a case study from Khumbu, Nepal 总被引:1,自引:0,他引:1
G. McDowell J. D. Ford B. Lehner L. Berrang-Ford A. Sherpa 《Regional Environmental Change》2013,13(2):299-310
Inhabitants of mountainous regions in least developed countries are recognized to be among the most vulnerable to climate change globally. Despite this, human dimensions work is in its infancy in mountain regions where we have limited understanding of who is vulnerable (or adaptable), to what stresses, and why. This study develops a baseline understanding of vulnerability to climate-related hydrological changes in the mountainous Khumbu region of eastern Nepal. Using a vulnerability approach, 80 interviews combining fixed and open-ended questions were conducted in four communities representing the geographic and livelihood variability of the region. The study identifies four region-wide vulnerabilities currently affecting residents: reduced water access for household uses, declining crop yields, reduced water access for meeting the high water demands of tourists, and reduced hydro-electricity generation. These vulnerabilities are widespread among the population but arrange spatially as a function of varying exposure-sensitivity to hydrological change, livelihood opportunities, and access to foreign financial assistance. Our findings indicate that precipitation change (not glacial change) is the greatest biophysical driver of vulnerability. 相似文献
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In climate change adaptation, contract farming can facilitate the adoption of coping and adaptation strategies, but such dynamics are less understood in the literature. This study uses primary data collected from a cross section of crop farmers in northern Ghana and a simultaneous equation systems approach to examine the links between contract farming and adoption of climate change coping and adaptation strategies. The major coping and adaptation strategies used by farmers include spraying of farms with chemicals, row planting, mixed farming, mixed cropping and crop rotation. Econometric results confirm that contract farming enhances the adoption of climate change adaptation strategies, but there is also a feedback effect on contract farming, such that farmers adopting more adaptation strategies have higher probabilities to get contract offer. This makes contract farming a viable policy instrument to consider in climate change adaptation. Furthermore, land ownership and extension services exert significant positive influence on adoption. As much as possible, coping and adaptation strategies should effectively be communicated to crop farmers. Policy-wise, development actors and successive governments in Ghana should encourage and facilitate contract or group farming, as was in the case of the National Block Farming, led by Ghana’s Ministry of Food and Agriculture. 相似文献
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Dynamics of the timberline in high mountain areas of the nether-polar Urals under the influence of current climate change 总被引:1,自引:0,他引:1
Changes in the altitudinal position of the timberline in high mountain areas of the Nether-Polar Urals and basic factors that influence such changes have been revealed on the basis of comparison of the age structure of Siberian larch (Larix sibirica) and arctic birch (Betula tortuosa) tree stands and photographs made in different years. On the mountain slopes studied, an upward shift of the timberline took place in areas covered in winter with thick snow (in the late 18th century), with Siberian larch being the pioneer species. Larch began colonizing areas with a thin snow cover in the 20th century. Birch appeared later and has since strengthened its positions. The increase in winter temperatures and precipitation facilitated the expansion of the forest. 相似文献
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Apple farmers in Kazuno, northern Japan, have started to grow peaches in the northernmost climatic region suitable for peach farming. Here, we investigate the process from the initial introduction of peach cultivation to its diffusion focusing on the farmers’ perceptions of climatic and non-climatic stimuli and their actions to respond to these stressors. Interviews with the farmers identified three distinct groups. Four farmers (Group 1) initiated the transition to peach production, which then spread to other farmers (Group 2) via personal connections. Later, after the provision of various means of support from the local government and the producers’ cooperative, many more apple farmers (Group 3) decided to begin peach production. Most farmers recognized the risk of damages to apple production as a result of typhoons and drought. However, only Group 1 farmers, who depend on direct sales to customers, mentioned these climate-related damages as a reason to shift toward peach cultivation in order to maintain their customers. The peach fruit was specifically chosen as a replacement for apple because it is less vulnerable to these climatic stressors. For Group 3 farmers, the financial losses associated with these climate-related events could be compensated for by insurance. Their decision to grow peach is largely due to its higher price and immunity against a specific disease which affects apples but they only shifted once institutional support was available, thereby reducing the risk in cultivating a new species. Our findings suggest that the role of institutions was not to drive the process of the adaptation itself but rather to provide relevant support to farmers to enable them to shift to new crop varieties more easily. We argue that such process-based understanding is crucial in formulating strategies to increase adaptive capacity in agriculture. 相似文献
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Impacts of business-as-usual management on ecosystem services in European mountain ranges under climate change 总被引:1,自引:0,他引:1
Harald Bugmann Thomas Cordonnier Heimo Truhetz Manfred J. Lexer 《Regional Environmental Change》2017,17(1):3-16
Mountain forests provide a multitude of services beyond timber production. In a large European project (ARANGE—Advanced multifunctional forest management in European mountain RANGEs), the impacts of climate change and forest management on ecosystem services (ES) were assessed. Here, we provide background information about the concept that was underlying the ARANGE project, and its main objectives, research questions, and methodological approaches are presented. The project focused on synergies and trade-offs among four key ES that are relevant in European mountain ranges: timber production, carbon storage, biodiversity conservation, and protection from gravitational natural hazards. We introduce the concept and selection of case study areas (CSAs) that were used in the project; we describe the concept of representative stand types that were developed to provide a harmonized representation of forest stands and forest management in the CSAs; we explain and discuss the climate data and climate change scenarios that were applied across the seven CSAs; and we introduce the linker functions that were developed to relate stand- and landscape-scale forest features from model simulations to ES provisioning in mountain forests. Finally, we provide a brief overview of the Special Feature, with an attempt to synthesize emerging response patterns across the CSAs. 相似文献
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Monika Schaffner Hans-Peter Bader Ruth Scheidegger 《Environment, Development and Sustainability》2011,13(2):403-422
With the worldwide intensification of agriculture, non-point source pollution of surface waters has become a pressing issue. Conventional river water quality models consider non-point sources as accumulated entries into the rivers and do not investigate into the processes generating the pollution at its source, thus preventing the determination of effective mitigation measures. The models require extensive data inputs, which is a deficiency in many developing and emerging countries with limited data availability. The current study applies a Material Flow Model as a complementary approach to quantify non-point source pollution from agricultural areas. Rice farming in the Thachin River Basin is presented as a case study, with a focus on nutrients. The total nitrogen and phosphorus flows from rice farming to the river system are quantified, the key parameters influencing these flows are determined and potential mitigation measures are discussed. The results show that rice contributes considerable nutrient loads to the Thachin River Basin. Scenario simulations demonstrate that a significant nutrient load reduction could be achieved by following the official recommendations for fertilizer application, thus confirming the local efforts to introduce best management practice. Our results underline the importance of non-point source pollution control in intensive agricultural areas, particularly of tropical lowland delta areas such as the Central Plains of Thailand. The specific benefit of applying a Material Flow Model in this context is that with limited data availability, one can reach an understanding of the system and gain a first overview over its key pollution problems. This can serve as supportive basis for determining consecutive in-depth research requirements. 相似文献
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Cristache Nicoleta Soare Ionica Nastase Marian Antohi Valentin Marian 《Environment, Development and Sustainability》2022,24(4):5514-5530
Environment, Development and Sustainability - The economic development of the tourism in disadvantaged mountain areas has the role of sustaining their development and economic growth. The premise... 相似文献
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西部地区农业资源利用的效率分析及政策建议 总被引:8,自引:1,他引:8
农业生产能否持续发展直接决定着,区域可持续发展能否实现。农业生产活动以土地资源、水资源作为主要的生态要素.并以化肥等作为外界投入要素。西部地区农业生产用水占用水总量的70%以上,农业也是国家实施退耕还林(草)工程。进行生态建设的主战场。通过计算西部地区备省区的耕地、水资源,化肥等主要农业资源消耗系数。对西部地区主要农业资源的科用效率进行了评价。结果表明:西部地区耕地资源的平均消耗系数为2.68m^2/kg粮食,农业水资源的平均消耗系数为1.10m^2/kg粮食.化肥的平均消耗系数为0.078m^2/kg粮食。根据计算结果,提出了提高西部地区土地资源,水资源以及化肥资源利用效率的政策性建议。 相似文献
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Different perceptions of adaptation to climate change: a mental model approach applied to the evidence from expert interviews 总被引:1,自引:1,他引:1
Ilona Otto-Banaszak Piotr Matczak Justus Wesseler Frank Wechsung 《Regional Environmental Change》2011,11(2):217-228
We argue that differences in the perception and governance of adaptation to climate change and extreme weather events are
related to sets of beliefs and concepts through which people understand the environment and which are used to solve the problems
they face (mental models). Using data gathered in 31 in-depth interviews with adaptation experts in Europe, we identify five
basic stakeholder groups whose divergent aims and logic can be related to different mental models they use: advocacy groups,
administration, politicians, researchers, and media and the public. Each of these groups uses specific interpretations of
climate change and specifies how to deal with climate change impacts. We suggest that a deeper understanding and follow-up
of the identified mental models might be useful for the design of any stakeholder involvement in future climate impact research
processes. It might also foster consensus building about adequate adaptation measures against climate threats in a society. 相似文献
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Throughout Europe, the role of farming as the private provider of public goods and services increasingly valuated by society
is today generally acknowledged. Furthermore, in the turn towards rural development concerns, multifunctionality as an attribute
of rural space has emerged, justifying the territorial approach of farming. The situation facing the multifunctionality demand
is nevertheless not the same in all European regions, which by all means is getting strengthened in the transition towards
post-productivism. In some regions, there is a productivist orientation and production has a dominant economic role, while
others will need to be supported on other functions to survive economically and socially, or may be best suited to environmental
functions alone. The vocation of the rural territories is different, and thus also the functions they are able to support.
This paper discusses the concept of multifunctionality of the rural areas, and defines a possible methodological approach
towards the identification of the different types of rural areas in Europe, based on the identification of ideal types, through
the analysis of selected indicators. The empirical application has been developed for the Portuguese Ministry of Agriculture,
aiming at assessing the differentiated characteristics and dynamics of the Portuguese rural territory. Analyzing data from
1990 and 2000, at municipal level, three dimensions have been considered: the land cover, the agricultural sector and the
rural community. Combining the three analyses, it was possible to identify different vocations of the rural space, and the
role that farming could have in the future for the multifunctionality of the territory. Accordingly, the municipalities have
been grouped in types, pre-defined as ideal types. This was a first attempt to understand the differentiation of the rural
territory in Portugal. For decision-making it should be further developed. It nevertheless shows that there is clear differentiation
concerning the possible landscape functions to be developed between regions and a possible way to assess. It also shows that
a territorial approach to agriculture may be the key for the maintenance of the sector in many areas where production by itself,
as it has been know until now, may be severely threatened. 相似文献