技术

Hedgerow technology [尼泊尔]

Ghase har Prabadhi (Main Contributor: Gyanbandhu Sharma, LI-BIRD)

technologies_1685 - 尼泊尔

完整性: 80%

1. 一般信息

1.2 参与该技术评估和文件编制的资源人员和机构的联系方式

关键资源人

SLM专业人员:
SLM专业人员:
有助于对技术进行记录/评估的机构名称(如相关)
Local Initiatives for Biodiversity, Research, and Development (LI-BIRD) - 尼泊尔
有助于对技术进行记录/评估的机构名称(如相关)
ICIMOD International Centre for Integrated Mountain Development (ICIMOD) - 尼泊尔

1.3 关于使用通过WOCAT记录的数据的条件

编制者和关键资源人员接受有关使用通过WOCAT记录数据的条件。:

1.5 参考关于SLM方法(使用WOCAT记录的SLM方法)的调查问卷

Participatory hedgerow management
approaches

Participatory hedgerow management [尼泊尔]

Hedgerow technology can be introduced through the joint participation of farmers, scientists, and related stakeholders. The whole community works together at all stages, including designing, planning, implementation, monitoring and evaluation, and scaling up.

  • 编制者: Shreedip Sigdel

2. SLM技术的说明

2.1 技术简介

技术定义:

A technology that uses hedgerows to help establish terraces on sloping land; farmers learn improved methods to manage a cultivation practice that stabilizes the soil, enhances food production, and adds to on-farm cash income.

2.2 技术的详细说明

说明:

Hedgerow technology provides options and opportunities for farmers working on sloping land. These hedgerows are a soil conservation measure but they also help to generate additional biomass and fodder and/or income for marginal farmers; in addition, they offer the added benefit of helping to balance the ecosystem and to address climate change by encouraging biodiversity. This improved version of a local technology makes maximum use of indigenous knowledge and adds to it by making available the latest scientific knowledge.

Purpose of the Technology: Farmers have traditionally selected plants for hedgerow cultivation based on practical considerations such as the availability of seeds and seedlings, how well seeds germinate, how well the plants grow and how well they can be coppiced, their branching habit, the amount of biomass they can produce, and how much cash the crop can generate. They made these choices without the benefit of any external input or scientific knowledge, relying solely on what they have been able to observe locally over the years. The participatory technology development process aims to help farmers by providing them with scientific input to augment their traditional knowledge on the selection, plan, and design of hedgerows. Over a very short time, the farmers learn to make good use of the new information and start enjoying the benefits that the improved agriculture yields in terms of social, economic, and environmental benefits.

Establishment / maintenance activities and inputs: The following steps outline how hedgerows can be established on sloping land:
• A participatory designing and planning process is used to choose which sloping lands will be cultivated and to select which hedgerow species are to be planted. Trained manpower is recruited with the help of farmers and other related stakeholders.
• The necessary materials such as A-frames, seeds, and seedlings are prepared.
• The technology is implemented in the field by trained manpower.
• The hedgerow seedlings are regularly maintained.
• The land users participate in periodic monitoring and evaluation of the technology. They report on progress and provide feedback.

2.3 技术照片

2.5 已应用该技术的、本评估所涵盖的国家/地区/地点

国家:

尼泊尔

有关地点的进一步说明:

Gorkha, Tanhun, Chitwan, Makwanpur, Nawalparasi, Dhading district

具体说明该技术的分布:
  • 均匀地分布在一个区域
如果不知道精确的区域,请注明大致覆盖的区域:
  • 1-10 平方千米

2.7 技术介绍

详细说明该技术是如何引入的:
  • 在实验/研究期间

3. SLM技术的分类

3.1 该技术的主要目的

  • 减少、预防、恢复土地退化

3.2 应用该技术的当前土地利用类型

同一土地单元内混合使用的土地::

具体说明混合土地使用(作物/放牧/树木):
  • 农林业

农田

农田

  • 一年一作
每年的生长季节数:
  • 2
森林/林地

森林/林地

注释:

Major land use problems (compiler’s opinion): Noticeable soil erosion, decreased soil fertility, diminished productivity, and lower moisture content in areas that have sloping lands and in areas where shifting cultivation is or was practised. Plots that had previously been farmed by the method of shifting cultivation, where plots are allowed to lie fallow for a number of years, are now cultivated annually. This land use change is worrying because shifting cultivation has traditionally been practised in areas where the quality of the soil is poor and cannot support annual crop production year on year.

3.4 供水

该技术所应用土地的供水:
  • 雨养

3.5 该技术所属的SLM组

  • 横坡措施

3.6 包含该技术的可持续土地管理措施

植物措施

植物措施

  • V1:乔木和灌木覆盖层
管理措施

管理措施

  • M1:改变土地使用类型

3.7 该技术强调的主要土地退化类型

土壤水蚀

土壤水蚀

  • Wt:表土流失/地表侵蚀
化学性土壤退化

化学性土壤退化

  • Cn:肥力下降和有机质含量下降(非侵蚀所致)
注释:

Main causes of degradation: soil management, deforestation / removal of natural vegetation (incl. forest fires), Heavy / extreme rainfall (intensity/amounts), droughts

3.8 防止、减少或恢复土地退化

具体数量名该技术与土地退化有关的目标:
  • 防止土地退化

4. 技术规范、实施活动、投入和成本

4.1 该技术的技术图纸

技术规范(与技术图纸相关):

Hedgerow technology on sloping land; note that the hedgerows help to stabilize the land and to control soil erosion and runoff.

Technical knowledge required for field staff / advisors: moderate

Technical knowledge required for land users: moderate

Main technical functions: control of dispersed runoff: retain / trap, Prevent Soil erosion

Secondary technical functions: reduction of slope angle, stabilisation of soil (eg by tree roots against land slides), increase in nutrient availability (supply, recycling,…)

作者:

Bir Bahadur Tamang

4.2 有关投入和成本计算的一般信息

具体说明成本和投入是如何计算的:
  • 每个技术区域
注明尺寸和面积单位:

ha

具体说明成本计算所用货币:
  • 美元
注明雇用劳工的每日平均工资成本:

2.7

4.3 技术建立活动

活动 时间(季度)
1. The equipment that is needed for planting is collected and prepared; this can include such things as A-frames, spades, and sickles.• The hillside where the technology is to be implemented is first cleaned and groomed to make way for the new hedgerows.• Contour lines are demarcated.• The seeds and/or seedlings are planted along the contour lines.

4.4 技术建立所需要的费用和投入

对投入进行具体说明 单位 数量 单位成本 每项投入的总成本 土地使用者承担的成本%
劳动力 Prepare and plant along the contour lines persons/day/ha 10.0 2.7 27.0 100.0
设备 Tools ha 1.0 32.0 32.0 100.0
植物材料 Seedlings ha 1.0 68.0 68.0 100.0
技术建立所需总成本 127.0
技术建立总成本,美元 127.0

4.5 维护/经常性活动

活动 时间/频率
1. The hedgerows are weeded and cleaned to discourage unwantedplants and pests.• Enrichment planting• The hedgerows are pruned and the clippings are mulched.• Manuring

4.6 维护/经常性活动所需要的费用和投入(每年)

对投入进行具体说明 单位 数量 单位成本 每项投入的总成本 土地使用者承担的成本%
劳动力 Maintenance of hedgerows persons/day/ha 26.0 2.7 70.2 100.0
植物材料 Seedlings ha 1.0 34.0 34.0 100.0
肥料和杀菌剂 Compost / manure ha 1.0 20.0 20.0 100.0
技术维护所需总成本 124.2
技术维护总成本,美元 124.2

4.7 影响成本的最重要因素

描述影响成本的最决定性因素:

The cost of implementing this technology is dependent on the gradient of the slope (and other geographical features), the local cost of the seeds or seedlings, and the availability of labour.

The technology has a low to average cost for implementation. Locally available seeds and seedlings and locally trained manpower and resources are valuable low-cost inputs for implementation. The technology has a higher likelihood of adoption in some social and physiographic areas, especially where land users can integrate their own expertise with scientific knowledge. Many factors play a role in determining whether the technology is effective and sustainable and whether farmers are willing to adopt it; these include that if the technology is demand driven, it is more likely to be adopted, and if land users can use inexpensive local resources they are more likely to try it.
All costs and amounts are rough estimates by the technicians and authors

5. 自然和人文环境

5.1 气候

年降雨量
  • < 250毫米
  • 251-500毫米
  • 501-750毫米
  • 751-1,000毫米
  • 1,001-1,500毫米
  • 1,501-2,000毫米
  • 2,001-3,000毫米
  • 3,001-4,000毫米
  • > 4,000毫米
农业气候带
  • 半湿润

Thermal climate class: subtropics

5.2 地形

平均坡度:
  • 水平(0-2%)
  • 缓降(3-5%)
  • 平缓(6-10%)
  • 滚坡(11-15%)
  • 崎岖(16-30%)
  • 陡峭(31-60%)
  • 非常陡峭(>60%)
地形:
  • 高原/平原
  • 山脊
  • 山坡
  • 山地斜坡
  • 麓坡
  • 谷底
垂直分布带:
  • 0-100 m a.s.l.
  • 101-500 m a.s.l.
  • 501-1,000 m a.s.l.
  • 1,001-1,500 m a.s.l.
  • 1,501-2,000 m a.s.l.
  • 2,001-2,500 m a.s.l.
  • 2,501-3,000 m a.s.l.
  • 3,001-4,000 m a.s.l.
  • > 4,000 m a.s.l.

5.3 土壤

平均土层深度:
  • 非常浅(0-20厘米)
  • 浅(21-50厘米)
  • 中等深度(51-80厘米)
  • 深(81-120厘米)
  • 非常深(> 120厘米)
土壤质地(表土):
  • 粗粒/轻(砂质)
表土有机质:
  • 中(1-3%)
如有可能,附上完整的土壤描述或具体说明可用的信息,例如土壤类型、土壤酸碱度、阳离子交换能力、氮、盐度等。:

Soil fertility is low

Soil drainage / infiltration is poor

Soil water storage capacity is low

5.4 水资源可用性和质量

地下水位表:

> 50米

地表水的可用性:

匮乏/没有

水质(未处理):

不可用

5.5 生物多样性

物种多样性:

5.6 应用该技术的土地使用者的特征

生产系统的市场定位:
  • 生计(自给)
非农收入:
  • 收入的10-50%
相对财富水平:
  • 贫瘠
个人或集体:
  • 个人/家庭
机械化水平:
  • 手工作业
  • 畜力牵引
说明土地使用者的其他有关特征:

Population density: 10-50 persons/km2

Annual population growth: 3% - 4%

5.7 应用该技术的土地使用者使用的平均土地面积

  • < 0.5 公顷
  • 0.5-1 公顷
  • 1-2 公顷
  • 2-5公顷
  • 5-15公顷
  • 15-50公顷
  • 50-100公顷
  • 100-500公顷
  • 500-1,000公顷
  • 1,000-10,000公顷
  • > 10,000公顷
这被认为是小规模、中规模还是大规模的(参照当地实际情况)?:
  • 小规模的

5.8 土地所有权、土地使用权和水使用权

土地所有权:
  • 个人,有命名

5.9 进入服务和基础设施的通道

健康:
  • 贫瘠
  • 适度的
教育:
  • 贫瘠
  • 适度的
技术援助:
  • 贫瘠
  • 适度的
就业(例如非农):
  • 贫瘠
  • 适度的
市场:
  • 贫瘠
  • 适度的
能源:
  • 贫瘠
  • 适度的
道路和交通:
  • 贫瘠
  • 适度的
饮用水和卫生设施:
  • 贫瘠
  • 适度的
金融服务:
  • 贫瘠
  • 适度的

6. 影响和结论性说明

6.1 该技术的现场影响

社会经济效应

生产

作物生产

降低
增加

饲料生产

降低
增加

产品多样性

降低
增加
水资源可用性和质量

灌溉用水需求

增加
降低
注释/具体说明:

Reduce need for external agriculture inputs

收入和成本

农业投入费用

增加
降低

收入来源的多样性

降低
增加
其它社会经济效应

Initial cost

high
low

very steep slope (>30 degree)

unsuitable
suitable

time to become well established

long
short

社会文化影响

食品安全/自给自足

减少
改良

社区机构

削弱
加强

SLM/土地退化知识

减少
改良

Empowerment of the community

reduced
improved

livelihood and human well-being

reduced
improved
注释/具体说明:

The hedgerows provide fodder and forage for animals; selling or bartering fodder helps to diversify food sources for humans and can also be a significant source of income.

生态影响

水循环/径流

地表径流

增加
降低
土壤

土壤水分

降低
增加

土壤有机物/地下C

降低
增加
生物多样性:植被、动物

生物量/地上C

降低
增加

植物多样性

降低
增加

害虫/疾病控制

降低
增加
其它生态影响

competition for water, sunlight and nutrients

increased
decreased

6.2 该技术的场外影响已经显现

下游淤积

增加
降低

缓冲/过滤能力

减少
改良

6.3 技术对渐变气候以及与气候相关的极端情况/灾害的暴露和敏感性(土地使用者认为的极端情况/灾害)

气候有关的极端情况(灾害)

气象灾害
该技术是如何应对的?
局地暴雨 不好
气候灾害
该技术是如何应对的?
干旱
注释:

Farmers selected species with deep root to adopt to climate extremes

6.4 成本效益分析

技术收益与技术建立成本相比如何(从土地使用者的角度看)?
短期回报:

积极

长期回报:

非常积极

技术收益与技术维护成本/经常性成本相比如何(从土地使用者的角度看)?
短期回报:

积极

长期回报:

非常积极

6.5 技术采用

  • 11-50%
如若可行,进行量化(住户数量和/或覆盖面积):

450 households in an area of 1- 10 sq km (10 - 50 persons per sq km)

在所有采用这项技术的人当中,有多少人是自发的,即未获得任何物质奖励/付款?:
  • 91-100%
注释:

25% of land user families have adopted the Technology without any external material support

450 land user families have adopted the Technology without any external material support

Comments on spontaneous adoption: One quarter of the total land users (about 450 families) in the areas studied adopted this technology voluntarily without any external support.

6.7 该技术的优点/长处/机会

编制者或其他关键资源人员认为的长处/优势/机会
Effective control of soil erosion on sloping land

How can they be sustained / enhanced? This vegetative measure of planting along contour lines can be sustained in the long run by initially selecting species preferred by farmers and by continuing to maintain them
Improved soil fertility

How can they be sustained / enhanced? Hedgerows help to increase soil fertility because they trap water and sediment on the terraces; leguminous hedgerow plants fix nitrogen in the soil and when they are mulched their residues increase organic matter in the soil.
Quality fodder and forage production

How can they be sustained / enhanced? Hedgerows produce fodder and forage for livestock
Bioterracing

How can they be sustained / enhanced? When leguminous plants with deep roots are used in the hedgerows they help to anchor the edges and over time, as the soil accumulates, bioterraces are established.
High adoption potential

How can they be sustained / enhanced? This technology is simple to implement using only local resources and is assured of replication since it was demand driven

6.8 技术的弱点/缺点/风险及其克服方法

编制者或其他关键资源人员认为的弱点/缺点/风险 如何克服它们?
Hedgerows are difficult to establish on steep slopes and in areas where the soil is dry and degraded Increase moisture in the soil by mulching the hedges
Hedgerows take a long time to establish Increase the amount of manure (compost, crop residue) added to the hedgerows and add more frequently. Increase the frequency of weeding and cleaning.
It is difficult to establish bio-terraces on steep land Reduce the spacing between hedgerows and grow tree species. Remember that that this technology is not recommend for very steep slopes
High initial cost Make maximum use of local resources and local labour
Hedgerows threatened by free grazing of animals Control grazing in the area

7. 参考和链接

7.1 信息的方法/来源

7.2 参考可用出版物

标题、作者、年份、ISBN:

Factors responsible for acceptance or rejection of SALT and other technological options suitable for shifting and sloping land cultivation areas, Technical Paper submitted to Hill Agriculture Research Project (HARP), Regmi, BR; et al. (2004),

标题、作者、年份、ISBN:

A resource book: Integrated hedgerow technology (in Nepali), Sharma, G; Regmi, BR; Tamang, BB; Shrestha, PK (2008)

标题、作者、年份、ISBN:

Manual on contour hedgerow inter-cropping technology, ICIMOD, 1999

标题、作者、年份、ISBN:

Impact of contour hedgerows: A case study, Focus on Godavari No 3. Kathmandu, Nepal: ICIMOD, Ya, T; Murray, AB (eds) (2004)

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