参与式方法在三北防护林工程中的应用

以山西省中德林业技术合作项目(PAAF)示范县原平市下班政村为例,阐述了参与式方法在三北防护林工程中的应用,并认为式方法能够解决三北防护林工程面临的一些问题。     

Innovative concepts towards sustainability in organic horticulture: testing a participatory technology design

Horticulture in the Netherlands is an economically strong sector. However, current organic horticulture does not comply with the standards for sustainability, because of its contribution to environmental pollution and exhaustion of natural resources. Transition towards more sustainable agro-ecosystems is inevitable for horticulture in the Netherlands to maintain its international competitive position. In this paper, we describe a study commissioned by the Dutch government aimed at testing an approach for participatory technology design and at generating commitment of stakeholders. In brainstorming sessions with representatives from research, extension and the horticultural sector, three draft scenarios were defined, based on political, societal and scientific goals for sustainable production systems. However, these draft scenarios were mainly formulated in a ‘top-down’ approach and within the sector no shared problem perception existed. So, strong identification with the sector was necessary to formulate more appealing scenarios. In interviews, various stakeholders, selected from the primary sector, the retail sector and other interested organizations were asked for their opinions about the scenarios, possible perspectives of the approach and their interest in participating in further development. In response to their interests in a participatory process, reformulation of the scenarios involved profound adaptation of both, objectives and pathways, and resulted in two modified scenarios, an economically driven organic production system and a socially driven organic city greenhouse. It is concluded that the approach of participatory technology design, the model of iterative learning and practice change, worked well. We learned that entrepreneurs are not inspired by long-term perspectives without clear short-term gains. Hence, the long-term aims of the government were translated into a series of steps, each in the short term resulting in partial realization of the goals. So, we experienced that we can affect the adoption behaviour of the entrepreneur by matching long-term aims with short-term interests.     

Agricultural Sustainability and Open-Field Farming in England,c.1650–1830

Recent debates about modern farming have come to be couched in the terminology of sustainable agriculture, a concept originally developed in respect of international post-World War Two farming, and especially in developing countries. In this paper we ask whether there is a historical dimension to the sustainability question and, in particular, whether by recasting the approach to the long-term development of agriculture it is possible to develop a new view of the manner in which farming has changed through time. We look at open-field farming where it dominated the agriculture of 17th and 18th century England. We show how collective community action had developed over many centuries to protect scarce land resources, and how pressures upon these resources through changing economic and demographic conditions inspired communities to develop and promote sustainable methods of husbandry and management. We demonstrate this world of sustainability through its maintenance of the ecological integrity of the land resource, the economic climate in which it operated, and the equitable ownership and decision-making processes that kept it in place. We also show that eventually the ecological integrity was put under mounting economic pressure arising from demographic forces, and also the external pressures arising from war. In particular we show how such pressures compromised the equitable ownership and access to land resources.     

Assessing the sustainability of Irish agriculture

Indicators encompassing the multidimensional nature of sustainability (economic, environmental and social) are developed here using Irish National Farm Survey data over an 11-year period (1996–2006). This is the first such study undertaken for Ireland, and the results show significant change over the decade in all three areas examined. The general concept of sustainability is discussed and the development of agricultural sustainability indicators in an Irish context is described. Individual indicators are dealt with in turn, and the RERC SMILE model is used to demonstrate how these indicators can be derived at a spatial level below the national scale. Economic viability was found to be generally in decline over the 10-year period examined. However, when individual farming systems were taken into account, some were found to perform better than others. From an environmental perspective, the more intensive farming systems (primarily dairy) were found to pollute more on average, while in more general terms the levels of methane emissions produced per hectare have been falling over the reference period. Results also indicate that rural Ireland is experiencing a period of fundamental change in terms of the demographic viability of its farming community.     

Green Agriculture: foundations for biodiverse,resilient and productive agricultural systems

There are many visions on how to achieve a sustainable agriculture that provides enough food and ecosystem services for present and future generations in an era of climate change, increasing costs of energy, social unrest, financial instability and increasing environmental degradation. New agricultural systems that are able to confront the challenges of a rapidly changing world require a minimum of ten attributes that constitute the defining elements of a Green Agriculture. A major challenge is to identify a set of thresholds that any agricultural production strategy must meet, beyond which unsustainable trends caused by the farming technologies would lead to tipping-point phenomena. Only those styles of agriculture that meet the established threshold criteria while advancing rural communities towards food, energy and technological sovereignty would be considered viable forms of Green Agriculture. Considering the diversity of ecological, socio-economic, historical and political contexts in which agricultural systems have developed and are evolving in, it is only wise to define a set of flexible and locally adaptable principles and boundaries of sustainability and resiliency for the agroecosystems of the immediate future.     

Farmers,Biodiversity and Plant Protection: Developing a Learning Environment for Sustainable Tree Cropping Systems

More diverse, perennial cropping systems often have better natural mechanisms for keeping pests at bay. But while scientists emphasise the broad benefits of conservation in terms of effective ecosystem functioning, farmers are more interested in biodiversity for the provision of food or of services such as shade or windbreaks. Because of their limited knowledge of the role of biodiversity in plant protection, farmers sometimes unconsciously disturb natural regulatory mechanisms. Some citrus farmers in Vietnam introduced sapodilla as an intercrop to diversify their source of income, and because this fruit tree requires little care. However, this apparently worthwhile attempt to combine two valuable crops has misfired. The ecological conditions that traditionally sustained natural pest control in citrus have been disturbed, thus trapping farmers in the pesticide treadmill. The weaver ant Oecophylla smaragdina stopped protecting citrus from stinkbugs and leaf-feeding caterpillars after facing competition from the black ant Dolichoderus thoracicus, which favours sapodilla trees as a nesting habitat. To avoid similar scenarios in the future, methods for linking scientific research on ecosystem functions with farmers' own knowledge, experience and priorities are presented. Examples are given of ways in which farmers in perennial cropping systems learn, and how scientists can facilitate this learning process.     

Improving China’s food and environmental security with conservation agriculture†

China has achieved impressive increases in agricultural output in recent decades. Yet, past approaches centred on a growing use of fertilizers, pesticides, fuel and water are not likely to achieve the required 30–50% additional increases in food production by mid-century. We show that efficiencies of production are falling and the costs of environmental harm are increasing. Agricultural innovations that improve natural capital are urgently needed. Conservation agriculture (CA) is now practised on >8?Mha in China and is offering promising prospects of both enhanced yields and environmental services. Our meta-analysis of 60 papers with 395 observations in China shows notable benefits from CA. Mean yield increase was 4.5% or 263?kg?ha^?1 for wheat, 8.3% or 424?kg?ha^?1 for maize, and 1.65% or 250?kg?ha^?1 for rice. In 34 datasets from 22 published papers (experimental duration: 2–17 years), 26 datasets (76.5%) show that CA increased yield and soil organic carbon (mean SOC increase of >3?g.kg^?1 in 0–10?cm soil depth) when compared with traditional tillage. Key priorities for the spread of more sustainable forms of agriculture in China are national policy and financial support, better coordination across agencies, and better extension for farmers.     

From our perspective: developing printed extension materials with cocoa farmers in Ghana

Farmers' lack of access to technical information constitutes a major obstacle to improving cocoa productivity in West and Central Africa. Recent debates on cocoa extension pay little attention to the potentially important role of printed extension materials for promoting cocoa integrated crop and pest management (ICPM) and encouraging farmer experimentation. A key issue concerns how to design such materials to meet farmers' needs. Typically, printed agricultural extension materials are developed by technical experts with little input from farmers, the end users. Materials developed in this way are often incomprehensible or confusing to farmers as they tend to contain too much information and use culturally inappropriate symbols and complex language. This paper describes a process involving Ghanaian cocoa farmers, communications and extension specialists to develop an illustrated booklet on cocoa integrated crop and pest management. The case study shows that farmers can make significant contributions to designing printed extension materials by bringing their own perspectives to the sequencing and design of the materials, highlighting details and showing illustrators the most effective ways to convey messages in a non-written way (using body language, colour etc.). As a result of farmers' involvement, the illustrations in the booklet are presented in a story context and sequence, and use a cause and effect approach to communicating ideas. Farmers' input also ensured that the illustrations provide a holistic presentation of cocoa farming by highlighting the linkage between application of technologies and improved household welfare. The paper concludes by offering guidelines on best practices for involving farmers in extension material development.     

A Participatory Simulation to Facilitate Farmers' Adoption of Livestock Feeding Systems Based on Conservation Agriculture in the Uplands of Northern Vietnam

In the mountain areas of northern Vietnam, extensive husbandry of large-ruminants is limited by the lack of natural forage. Since 2000, the Mountain Agrarian System Program has been concerned with this issue and has evaluated technical alternatives aimed at sustainable integration of crop-livestock systems. One alternative consists of feeding systems for largeruminants based on cropping systems with plant cover. Diffusion of information about the new system is supported by a set of interactive communication tools for use between farmers and researchers. A participatory simulation method was developed that combines a compartmental model of the village territory with five technical innovations. Farmers simulate the adoption of the innovations they choose among food-forage cropping systems in rotation or in association, and urea-treated straw. They evaluate the quantity of forage that can be grown for their herd using the chosen set of techniques.

Simulations revealed farmers' constraints and objectives in adopting sustainable cropping systems on the hillsides while maintaining a small animal husbandry system. The results obtained by each farmer provide a useful basis for discussion about the implementation of innovation. This participatory simulation method could be more widely used to facilitate the diffusion of innovations such as integrating livestock feeding systems with conservation cropping practices.     

The emergence of urban agriculture: Sydney,Australia

Across the world the phenomenon of urban agriculture (UA) is defining itself after emerging from a mainly grass-roots response, evidenced in the Sydney Metropolitan Region by the Hawkesbury Harvest phenomenon and the Sydney Food Fairness Alliance, to powerful global forces which are negatively and paradoxically impacting on the quality of life of urban and farming communities. In the developed world these major forces include: (1) urban sprawl and its progressive sterilization of agricultural lands; (2) the supermarket dominance of food chains; (3) the fast food industry and associated health problems such as obesity; (4) globalization. The community-based promotion and marketing of local agriculture is causing some governments and public and private organizations throughout the world to recognize UA as a strategic mechanism to enable urban communities to deal with food security in the context of neo-liberalism, climate change, pandemics, natural disasters, human and environmental health, carbon footprint, biosecurity/terrorism, peak oil, waste management, and landscape and natural resource management. This paper explores the history of UA in the Sydney region. It is a narrative that allows for UA in the Greater Sydney Metropolitan area to draw on the experiences of other developed countries where UA is establishing its position.     

Defining and delivering ‘sustainable’ agriculture in the UK after Brexit: interdisciplinary lessons from experiences of agricultural reform

Defining and achieving sustainability in the context of complex, multi-scale, and constantly changing agricultural systems is a challenge for research and policy. In UK agriculture, the European Union and its Common Agricultural Policy has been a key source of funding for and approaches to sustainability in the agriculture and rural development sectors. The decision to leave the European Union represents a significant moment in UK agriculture and rural development policy, and both an opportunity and responsibility for the UK government to set out and commit towards achieving sustainability goals for the sector. In this study, a combination of ethnographic case study research, focusing on the case of upland farmers in the Yorkshire Dales, policy analysis and national agricultural sector data is referred to in describing experiences of agricultural policy reform over recent decades. From these experiences, lessons for the design and delivery of future agriculture and rural development are drawn out. It is argued that the integrated assessment of multiple sources of knowledge can provide a means to critically reflecting on evidence about sustainability in complex systems, better understanding trade-offs, and creating a more complete and inclusive knowledge base from which to define sustainable agriculture.     

创意农业与旅游产业融合发展实证研究*——以四川省省级示范农业主题公园为研究对象

[目的]通过对创意农业与旅游产业融合模式类型、面临困境、融合路径的研究,探索我国社会主义新农村建设背景下传统农业生产经营的新思路,从而为旅游服务业的创新性升级提供战略思想。[方法]文章采用文献分析法和调查分析法,从创意农业与旅游产业融合的概念、模式入手,以四川省省级示范农业主题公园为研究对象,针对目前存在的问题提出针对性解决策略。[结果](1)从游客的年龄和性别进行分析可以看出,年轻游客占很大比例,29岁以下占68.2%,以大学生为主,且女性游客比男性游客的比重略大一些,可能是因为年轻人特别是大学生比老年人外出旅游几率大,精力充沛,且女性游客对于有机蔬菜、水果采摘以及农业观光旅游更感兴趣;(2)从游客的收入及从事的职业分析得出,游客的收入以及所从事的职业也会影响游客的出游偏好。[结论]常规的仅仅以景区欣赏为主流的形式和当代人们的需求脱节,在此形势下,强化旅游的形式多样性,趣味性尤其重要。只有从根本上形成创新意识,通过结合资源优势、技术优势、人才优势等,才能推动我国创意农业与旅游产业的有机融合与可持续发展。     

Beyond the agroecological and sustainable agricultural intensification debate: Is blended sustainability the way forward?

With the sustainable development goals has come a renewed global interest in ending hunger and achieving food security, while preventing natural resource degradation. Despite this renewed interest and increased commitments to invest in agricultural development, there is an outstanding debate over the technological trajectories to sustainability. The debate centres on sustainable agricultural intensification (SAI) and agroecological intensification (AEI) pathways to agricultural sustainability. Using a systematic literature review approach, this study examines the debate over AEI and SAI. This study employs a theoretical framework based on the economic, social, and ecological dimensions of sustainable agriculture within a policy and institutional space. Based on the sustainability dimensions, a discourse analytical technique is applied to unravel the debate. The results reveal differences in actor composition in the SAI and AEI pathways. Both pathways aim to promote food security with optimal and sustainable use of inputs; however, the actors differ on discourse relating to the concept of farming, the role of genetic engineering, the scale of operation, land use and soil health. Resolving these differences requires a blended sustainability approach that moves beyond the current AEI and SAI debate by acknowledging the tradeoffs and synergies of the socio-economic and ecological dimensions.     

气候变化对农业和粮食生产影响的研究进展与发展方向

农业是以作物生长为基础,因此,受气候变化的影响很大。我国幅员辽阔,东西和南北之间气候 差异显著。气候变化将直接导致我国主要农区水资源和热量资源时空分布格局变化。农业生产所依赖的土 壤肥力和作物品种资源及其抗逆性也会在气候变化的作用下发生变化。气候变化直接导致局部地区农业气 候灾害和农业病虫害频度与强度加剧。在气候变化作用下,我国农业作物种植制度、农业生产结构和地区 布局将会发生相应的变化,导致我国粮食产量波动变化,甚至影响到国家粮食安全。因此,迫切需要深入 分析气候变化对我国农业和粮食生产影响的研究进展,提出进一步深入研究的重点发展方向。目前,国内 外围绕气候变化对农业和粮食生产的影响开展了很多研究。综合进来,主要有集中在气候变化对农区水热 土资源要素时空分布变化的影响,对作物品种抗逆性、抗逆基因、品种改良的影响与适应,对作物种植制 度、生产结构与地区布局的影响与适应,对农业生物灾害和非生物灾害尤其是农业旱涝灾害发生的影响, 以及对粮食产量、国家粮食安全和农业发展的影响等方面。从发展趋势看,深入开展气候变化对我国农业 和粮食生产系统的影响机理及适应机制研究,科学地把握气候变化背景下水热资源条件、土壤肥力、品种 资源等变化规律,揭示农业病虫害流行暴发特征和气象灾害发生机理,模拟、分析和预测气候变化对我国 农业、粮食生产和国家粮食安全的影响程度和变化趋势,具有重大的科学价值和现实意义,因而也将是气 候变化对农业和粮食生产影响研究的重点发展方向。     

Using agroecology to stimulate the greening of agriculture in China: a reflection on 15 years of teaching and curriculum development

Even though worldwide research and teaching in Agroecology blossomed in the 1980s, until recently, the development of Agroecology in China has been constrained by technical, cultural and economic considerations. The delay in the assimilation of Agroecology, as a science, a practice and a movement, has resulted in the discipline of Agroecology in China lacking the holistic, interdisciplinary approaches needed to respond to current global and regional agricultural challenges. There is a need to redefine Agroecology both as a critical discipline and as a pedagogical approach. By using an ecology-oriented systematic approach to integrate education and research, a reframed Agroecology is proposed; this is based on a re-imagined, holistic consideration of the hierarchy of agroecosystems. The practical experience of a 15-year international team-taught Agroecology education programme among participants from Canada and China has helped refine disciplinary classifications, both from horizontal and vertical hierarchies. There are evolving impacts of this experiment in Sino-Canadian cooperation in Agroecological research and education; they include a new generation of highly trained agroecologists prepared to act across inter-related disciplines; the alignment of Chinese universities to international agricultural curricula and a better- informed policy-making process towards greening agriculture in China.     

Environmental and socio-economic sustainability of chinampas (raised beds) in Xochimilco,Mexico City

The chinampas (raised beds) of Xochimilco, Mexico City, are highly productive, traditional wetland agricultural systems, which were able to feed most of the population in pre-hispanic times. There is a strong trend to substitute chinampas with plastic greenhouses for flower production, which creates negative impacts in the landscape, environment and culture. This study compares the environmental and socio-economic sustainability of chinampas and greenhouses, at both the farm and regional levels, using the MESMIS framework. Even though the results show that greenhouses are more profitable, the contribution of chinampas to ecosystem services cannot be substituted by greenhouses, as tree cover is lost, canals are filled and food is not provided. Greenhouses had a higher diversity, but also a higher agrochemical use and are heavily dependent on external inputs and subsidies. Chinampas have shifted from staple crops to commercial horticulture in order to remain a technically viable and economically feasible option for local farmers. However, compensation mechanisms for the provision of ecosystem services are urgently needed if this ancient system is to be maintained. The framework allowed the integration of indicators at both farm and regional scales, combining on-farm surveys with GIS techniques, which could assist in ecosystem service valuation.