共查询到19条相似文献,搜索用时 234 毫秒
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农作物与经济林树种间作,称为农林复合经营.农林复合经营可以提高单位面积的经济效益,增加农民收入.对农林复合经营的模式以及农林复合经营在乡村林业中的作用进行了探讨. 相似文献
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农林复合经营在云南省退耕还林工程中的应用 总被引:3,自引:0,他引:3
分析云南省退耕还林存在着造林树种及模式单一等诸多问题,针对这些问题,阐述了农林复合经营模式在退耕还林中的应用情况,认为在退耕还林中要保持农户长久、高度的积极性和保证长远的经济效益,就必须全面推行农林复合经营模式,让农林复合经营技术成为退耕还林的主要技术手段. 相似文献
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通过对秭归县境内长江一、二、三级支流的气候、海拔、立地条件等因子的研究 ,建立了二元、三元、多元农林复合经营模式类别 ,在此基础上组建了 1 0 0种能适应不同环境的农林复合经营模式类型 ,在三峡库区具有典型的代表性和广泛的实用性。 相似文献
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辽西地区几种农林复合型水土保持林模式的研究 总被引:3,自引:0,他引:3
辽西地区属半干旱丘陵区 ,由于地势起伏 ,雨量集中 ,土壤粘重 ,植被稀疏 ,森林覆盖率低 ,成为我省水土流失比较严重地区。水土流失的结果是导致表土破坏 ,底土裸露 ,土壤理化性质明显恶化 ,土地生产力下降 ,增加了植被恢复的难度。为迅速改变辽西地区贫瘠落后的面貌 ,恢复生态系统平衡。建国以来 ,这一地区开展了大面积人工造林工作 ,据统计资料表明 ,以油松纯林为主的水保林面积达 5 3万hm2 ,这些林分对改善区域生态环境 ,推动国民经济及社会各项事业的发展起到了重要作用。但以大面积纯林为主的油松水土保持林存在树种单一、层次简单、… 相似文献
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Shibu Jose 《Agroforestry Systems》2011,83(2):101-105
Indigenous knowledge has influenced native species selection in agroforestry systems worldwide. However, scientific advancements
in plant sciences, agroforestry technologies and trade have accelerated species movements and establishment beyond their native
range. Managing native and non-native species is an important area of research in agroforestry and this thematic issue includes
13 papers that cover a range of topics from the role of non-native species in agroforestry to management interventions to
improve yield. As evident from these papers, non-native plants are still an important component of agroforestry in many parts
of the world. Whether native or non-native, management interventions can increase the economic, environmental and social
values of these species and that of agroforestry. Collectively, these papers attest to the increasing body of foundational
knowledge in agroforestry. 相似文献
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针对云南山区农村的综合治理和开发的现实,面向山区农业的两个转变及体制改革,遵照生态经济原则,从农业生态系统的生态经济协调出发,遵循林农结合系统的“整体、协调、循环、再生”的原则,把云南山区区划为冷温性湿润型、温凉性湿润型、暖温性湿润型、暖温性半湿润型、暖热性湿润型、热性湿润型、热性半干旱型7种林农结合系统,分系统论述该区域的行政范围、自然条件、资源状况、农林生产特点、林农结合的经营模式.经比较分析,归纳与发掘出80种以上的云南山区林农经营模式.每个系统中都有10种以上模式.既反映山区自然的特点,又具有地方、民族特色. 相似文献
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In an effort to assess agroforestry adoption potential among a diverse Pennsylvania landowner population, a mail survey instrument
was sent to 250 members of the Pennsylvania Association of Sustainable Agriculture (PASA) and 250 members of Woodland Owner
Associations (WOA). Current management objectives and production strategies, agroforestry awareness, agroforestry interest,
and perceptions regarding the benefits and obstacles to agroforestry adoption were gauged. Market segmentation was performed
with a two-step cluster analysis to produce four agroforestry adoption potential models: Timber-Related Practices, Livestock-Related
Practices, Specialty Crop-Related Practices, and Non-Adopters. The analyses showed that agroforestry practices could indeed
satisfy specific land management objectives within diverse populations. The key to outreach success and adoption will be to
engage these landowner groups according to their unique interests and values, and to demonstrate the potential agroforestry
has to enhance existing objectives. 相似文献
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In global terms, European farms produce high yields of safe and high quality food but this depends on the use of many off-farm inputs and the associated greenhouse gas emissions, loss of soil nutrients and other negative environmental impacts incur substantial societal costs. Farmers in the European Union receive support through a Common Agricultural Policy (CAP) that comprises direct payments to farmers (Pillar I) and payments related to rural development measures (Pillar II). This paper examines the ways in which agroforestry can support European agriculture and rural development drawing on the conclusions of 23 papers presented in this Special Issue of Agroforestry Systems which have been produced during a 4-year research project called AGFORWARD. The project had the goal of promoting agroforestry in Europe and focused on four types of agroforestry: (1) existing systems of high nature and cultural value, and agroforestry for (2) high value tree, (3) arable, and (4) livestock systems. The project has advanced our understanding of the extent of agroforestry in Europe and of farmers’ perceptions of agroforestry, including the reasons for adoption or non-adoption. A participatory approach was used with over 40 stakeholder groups across Europe to test selected agroforestry innovations through field trials and experiments. Innovations included improved grazing management in agroforestry systems of high nature and cultural value and the introduction of nitrogen fixing plants in high value timber plantations and olive groves. Other innovations included shelter benefits for arable crops, and disease-control, nutrient-retention, and food diversification benefits from integrating trees in livestock enterprises. Biophysical and economic models have also been developed to predict the effect of different agroforestry designs on crop and tree production, and on carbon sequestration, nutrient loss and ecosystems services in general. These models help us to quantify the potential environmental benefits of agroforestry, relative to agriculture without trees. In view of the substantial area of European agroforestry and its wider societal and environmental benefits, the final policy papers in this Special Issue argue that agroforestry should play a more significant role in future versions of the CAP than it does at present. 相似文献
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池杉在海岸带滨海草甸盐渍土中的生长表现 总被引:1,自引:0,他引:1
对新会市海岸带复合农林业试验区的池杉林带进行了生长调查。结果表明:池杉在pH值为8.15,盐分含量为0.515%的海岸带滨海草甸盐渍土中生长良好,5年生林带平均树高达5.9m以上,胸径达10.7锄以上,已开始起到防护作用;13年生时树高达11.2m,胸径达17.9cm,年平均树高、胸径分别为0.86m和1.38cm,生长较为迅速,可作为我省海岸带复合农林业防护林带的主要树种。地下水位对池杉的树高和胸径生长有一定的影响,在海岸带营造池杉林带时,宜选择地下水位低于50cm的立地。 相似文献