共查询到10条相似文献,搜索用时 15 毫秒
1.
Necia T. Parker-Gibson Marei U. Houpert 《Journal Of Agricultural & Food Information》2017,18(3-4):306-326
ABSTRACTAs part of a larger, national survey, we performed an in-depth qualitative analysis using semistructured interviews and a standard set of questions. We wished to examine the research practices of faculty in agriculture, to understand what they need to be successful in their teaching and research. We plan to use this information to make improvements to research support services. The national survey results should help pinpoint opportunities for developing new research support services for agriculture. This study adds to library and information sciences by examining the specific needs of faculty members in agriculture and agricultural extension, groups that have been previously underrepresented in the library literature. 相似文献
2.
王治国 《中国水土保持科学》2007,5(6):87-92
以小流域为单元实施山、水、田、林、路、渠综合治理的理论与技术体系是在我国水土保持长期生产实践和科学研究中形成的具有中国特色的水土保持学科体系。通过川陕"长治工程"中期评估考察,分析"长治工程"小流域综合治理的特色与创新,并据此讨论我国水土保持学科的性质与定位。水土保持学科无论从法律地位还是学术地位,均应归属于资源保护与利用的范畴,与环境保护和生态学科的本质区别在于,水土保持更具有突出的生产功能。现阶段水土保持学科仍应首先赋予其防治水土流失,治理江河,提高农业生产综合能力,发展农村经济,改善农村基础设施及农民生活质量的内涵,并努力使之与农村生态建设结合,以不断深化和丰富其内涵,同时应在开发建设项目水土保持、饮用水水源地水土保持等方面拓展其学科外延。 相似文献
3.
Cristina Arias-Navarro P. Panagos A. Jones M. J. Amaral A. Schneegans M. Van Liedekerke P. Wojda L. Montanarella 《European Journal of Soil Science》2023,74(5):e13423
The European Green Deal with its high ambition has set the European Union (EU) on a promising path towards greater soil protection. The EU Soil Strategy 2030, the Biodiversity Strategy 2030, the Farm to Fork Strategy, the Zero Pollution, the Nature Restoration Law and the European Climate Law, among others, include actions to protect our soils. Research and Innovation (R&I) will play a key role in developing new knowledge and tools enabling the transition to healthy soils. The main aim of this paper is to analyse past and near-future trends in EU's funding for R&I on soil-related issues. For this purpose, a review of EU-funded soil projects was conducted based on the data available in the Community Research and Development Information Service and the official portal for European data. Our analysis shows that over the past 40 years, the EU has invested significantly in developing integrated knowledge about the relationships between soil functions and ecosystem services and how human-induced pressures affect soil health. Following the adoption of the EU Soil Thematic Strategy in 2006, there was an increase in research funding for soil-related research. Furthermore, our analysis also illustrates an interesting interplay of permanent and changing soil themes. The Horizon Europe Mission ‘A Soil Deal for Europe’, which aims to establish a network of 100 living labs and lighthouses to lead the transition towards healthy soils and safeguard human and planetary health by 2030, provides a further incentive for soil research. Together with the EU Soil Strategy 2030 and the new proposal for a Directive on Soil Monitoring and Resilience (Soil Monitoring Law), and the EU Soil Observatory (EUSO), the three instruments set up the political framework, concrete measures, and a monitoring system needed for the protection, restoration and sustainable use of soils. 相似文献
4.
To enhance sustainable land use, a From Farmer to Farmer project was conducted in Switzerland (2001–2010). A multi‐stakeholder discussion group co‐produced nine videos with experienced farmers and wine producers showing sustainable soil management practices. We analysed the video audio‐visual content and drew on reflections of the co‐production process, referring to concepts of system, target and transformation knowledge, as well as on social learning. The analysis showed a broad range of means (or actions) for sustainable soil management in arable land management, fodder production and wine growing that are aligned to transformation knowledge. The research showed that farmers refer to three phases of social learning, light‐bulb moments, coping with challenges and gaining successful expertise. These are not just linear processes of individuals. Four types of social learning were found in the video analysis: (a) learning from observing actions of others, (b) sharing experiences with storytelling, (c) informal social interactions and (d) being a role model with a large social network. Videos enable transformation knowledge to be shared with peers using storytelling; this powerful narrative communication style provides credibility and respects the ‘thought style’ of the target audience group. We conclude that for successful implementation of sustainable actions, it is important to address a specific target group and share their transformation knowledge built upon system and target knowledge. The social learning video method is a viable way to enable social learning between science, administration and practice and has potential for fostering change in sustainable soil management. 相似文献
5.
《Soil Use and Management》2018,34(1):111-123
The study of soil–landscape relationships at a detailed scale (1:10 000) and its use for soil management was less common in developing countries. The study was conducted in western Ethiopia with the aim to explain the soil variability across landscapes, classify soils into mapping units and produce a map of these soils. This study was performed based on a discrete model of spatial variation. Five soil reference groups: Vertisols, Cambisols, Fluvisols, Luvisols and Leptosols were identified in the study site. Distribution of the soil reference groups was determined by landscape position. Variation in soil texture, colour, pH , exchangeable acidity, organic carbon, total nitrogen, available phosphorus (av. P), carbon to nitrogen ratio (C/N), exchangeable potassium (K), calcium (Ca), magnesium (Mg), sodium (Na) and cation exchange capacity (CEC ) was observed within and among soil mapping units (SMU s). Variability was considerably high for exchangeable Ca and CEC . Factor analysis result indicated that variation in soil properties within land unit was comparatively highest in Leptosols of SMU 9 (88.87%) and lowest in Vertisols of SMU 1 (60.82%). Moderate‐to‐fine scale mapping of soil properties helps to build detail information for soil management. Grouping fields into mapping units that require more or less similar management measure would be an important soil–landscape concept. As a result, mapping units could be used as cost‐effective means of treating variable field so as to optimize the forecasted benefits. 相似文献
6.
William K. Heve Ngonidzashe Chirinda Samuel G.K. Adiku 《Acta Agriculturae Scandinavica, Section B - Plant Soil Science》2016,66(2):178-190
Since soil organic matter (SOM) buffers against impacts of climatic variability, the objective of this study was to assess on-farm distribution of SOM and propose realistic options for increasing SOM and thus the adaptation of smallholder farmers to climate change and variability in the interior northern savannah of Ghana. Data and information on spatial distribution of soil organic carbon (SOC), current practices that could enhance climate adaptation including management of organic resources were collected through biophysical assessments and snap community surveys. Even though homestead fields were more frequently cultivated, higher amounts of SOC (15?±?2?g?kg?1) were observed in homesteads when compared to the periphery cropped sections in bushes (SOC?=?9?±?1?g?kg?1). Possibly, a combination of household wastes, droppings of domestic animals that are mostly reared in a free-range system, manures applied to crops and cultural norms of chieftaincy, which cause short-term fallowing of homestead fields could account for the differences in SOC. Use of organic resources for soil amendment among farmers was low (31% of interviewed farmers) due largely to ignorance of fertilizer values of manures and residues, traditions for bush-burning and competing use of organic resources for fuels. Our findings suggest a need for effective management practices, training and awareness aimed at improving management of organic resources and, consequently, increasing SOC and resilience to climate-change-induced risks. 相似文献
7.
生物炭:一种新型改良剂能修复矿物、工业以及污水废弃物污染的土壤 总被引:2,自引:0,他引:2
Mine tailings, waste rock piles, acid mine drainage, industrial
wastewater, and sewage sludge have contaminated a vast area of
cultivable and fallow lands, with a consequence of deterioration of
soil and water quality and watercourses due to the erosion of
contaminated soils for absence of vegetative cover.High concentrations
of toxic elements, organic contaminants, acidic soils, and harsh
climatic conditions have made it difficult to re-establish vegetation
and produce crops there. Recently, a significant body of work has
focussed on the suitability and potentiality of biochar as a soil
remediation tool that increases seed emergence, soil and crop
productivity, above ground biomass, and vegetation cover on mine
tailings, waste rock piles, and industrial and sewage
waste-contaminated soils by increasing soil nutrients and water-holding
capacity, amelioration of soil acidity, and stimulation of microbial
diversity and functions. This review addresses: i) the functional
properties of biochar, and microbial cycling of nutrients in soil; ii)
bioremediation, especially phytoremediation of mine tailings,
industrial waste, sewage sludge, and contaminated soil using biochar;
iii) impact of biochar on reduction of acid production, acid mine
drainage treatment, and geochemical dynamics in mine tailings; and iv)
treatment of metal and organic contaminants in soils using biochar, and
restoration of degraded land. 相似文献
8.
W. R. S. Critchley C. Reij T. J. Willcocks 《Land Degradation \u0026amp; Development》1994,5(4):293-314
After half a century of failed soil and water conservation projects in tropical developing countries, technical specialists and policy makers are reconsidering their strategy. It is increasingly recognised that the land users have valuable environmental knowledge themselves. This review explores two hypotheses: first, that much can be learned from previously ignored indigenous soil and water conservation (ISWC) practices; second, that ISWC can often act as a suitable starting point for the development of technologies and programmes. However, information on ISWC is patchy and scattered. Many ancient, derelict systems are better described than traditions which still persist today. ISWC has been most commonly developed under dry and marginal conditions, and/or on steep hillsides. Sustained population pressure has often tended to stimulate ISWC. There is a need for more incorporation of ISWC into resource conservation programmes: many projects have ignored local traditions to their detriment. It is widely agreed that further study and research on ISWC is required and justified as a logical starting point towards developing adoptable and sustainable soil and water conservation systems for small-scale farmers. 相似文献
9.
Viet San Le Laetitia Herrmann Lambert Bräu Didier Lesueur 《Soil Use and Management》2023,39(3):1185-1204
Tea is a very important cash crop in Vietnam as it provides crucial income and employment for farmers in poor rural areas. Unfortunately, the dominance of long-term, conventional tea cultivation has caused severe soil health degradation and environmental pollution. At the same time, as tea production may provide a better net income compared with other annual crops such as rice and vegetables, farmers have been converting parts of their allocated land to cultivate tea plants. Little is known about the benefit of agroecological management as an alternative to conventional tea management practices, and thus, there is a need to understand how it can improve tea yields, quality and the livelihoods of the farmers. Conducted in Northern Vietnam from 2019 to 2022, this study examined the impacts of agroecological tea management practices on soil health indicators, tea yield and quality, and net income of tea farmers. We showed that agroecological management practices significantly enhanced soil organic matter by 0.8% and soil pH by 0.5 units on average. Conversely, conventional management based on chemical fertilizer applications, significantly increased soil total nitrogen by 0.15%–0.2%. No significant differences were observed between soil texture and other soil chemical characteristics. Soil biological parameters were also significantly higher in agroecological tea soil and root samples than in conventional tea plots. Average AMF frequency and intensity of the agroecological tea roots were 98% and 37%, respectively, compared with 73% and 15% of the conventional tea roots. Likewise, soil macrofauna and mesofauna abundance in the agroecological tea plantations was 76 individuals/m2 and 101 individuals/100 g fresh soil on average, respectively, while that of conventional tea farms were 34 and 63 individuals/100 g fresh soil, respectively. Interestingly, a comparison between the converted and nonconverted lands did not show any significant effect of the conversion on soil physicochemical and biological characteristics, apart from tea root AMF colonization. Conventional tea management consistently resulted in higher tea yield and yield components, even though the differences were not always statistically significant. Despite lower tea yields, agroecological tea adopters earned around USD 8400 ha/year more than the farmers still practicing conventional management. This study shows that it is economically and environmentally more sustainable to produce organic tea than conventional tea, and our results should encourage more farmers to adopt such agroecological practices in Northern Vietnam. 相似文献
10.
为了充分发挥山区旅游公路水土保持措施的景观功能,以湖北神农架木鱼坪至兴山县昭君桥旅游公路为例,从景观美化功能和景观协调功能2方面进行水土保持设计。景观美化功能方面,根据项目沿线的自然、人文和公路本身的特点,分为3类景观特色带、3个景观过渡带和8个景观特色点,并配置相应的水土保持措施。景观协调功能方面,依据沿线的具体情况,使用渐缩式(阶梯式)空心砖护面墙、上挡墙L形种植槽、路基外侧悬墙式植槽和木桩栅栏式挡墙等绿化技术,进行公路沿线的绿化和美化。 相似文献