技术

Mangroves as Buffer against Natural Hazards [菲律宾]

"Bakauan"

technologies_578 - 菲律宾

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:

Dinamling Djolly Ma.

Bureau of Soils and Water Management

菲律宾

SLM专业人员:

Gultiano Wilfredo

Bureau of Soils and Water Management

菲律宾

SLM专业人员:

Abarro II Ace Wilfred

Bureau of Soils and Water Management

SLM专业人员:

Lofranco Rufino

DENR-Community Environment and Natural Resources Talibon

有助于对技术进行记录/评估的项目名称(如相关)
Decision Support for Mainstreaming and Scaling out Sustainable Land Management (GEF-FAO / DS-SLM)

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。:

1.4 所述技术的可持续性声明

这里所描述的技术在土地退化方面是否存在问题,导致无法被认为是一种可持续的土地管理技术?:

2. SLM技术的说明

2.1 技术简介

技术定义:

Mangroves "bakauan" are planted in the island coast to form barriers and as first line of defense during storm surges.

2.2 技术的详细说明

说明:

Mangrove plantation in the island of Banacon which is 10.91 kilometers away from the municipality of Getafe, Bohol in Central Visayas started in 1957.The most common specie grown is the “Bakauan” under the Rhizophoracea family.

Mangroves contribute in protecting the coast against natural hazards such as storms, tsunamis and coastal erosion. It weakens the impact of typhoons that bring strong winds, continuous high waves and storm surges. A dense cluster of bakauans obstruct the entry of winds and waves when passing through the mangroves minimizes the force of wind sand waves. According to the residents of the island, they were spared from total destruction of properties during onset of typhoons because of the presence of the bakauans. Mangroves were utilized also by the Banacon residents as source of poles for houses, fishpens and charcoals for cooking. The dense roots of the trees bind the soils thus preventing erosion. The tree roots serve as spawning ground for fishes and other variety of sea species that lead to an increase in harvest of sea foods in the area. The mangrove plantation was also developed into ecotourism site.

Site evaluation is the pre-requisite in the establishment of mangrove area. An ideal area is with sand dune during low tide. It is followed by site lay out using the planting design that is adopted, and direct planting of propagules in the soil. Planting materials used are the cigar-shaped mature propagules harvested from the Bacauan- Lalake specie of mangroves. The direct seeding planting is the ideal method of planting in establishing a mangroves plantation. Mangrove propagules must be planted after collection. It should not be exposed to direct sunlight to prevent moisture loss.

There are (3) planting designs used in the establishment of the mangroves. First, the high density planting of propagules with no lay out to be followed. This planting design can accommodate 30,000 pcs of propagules per hectare. Second, design has a spacing of 1 meter by 1 meter planted in rows and can hold 10,000 pieces of propagules per hectare. Third is the block/cluster design in which each cluster was planted with 750 pieces of propagules with a distance of 30 centimeters apart per propagules. The spacing between the blocks or cluster is 10 meters and can contain 5,000 pieces of propagules per hectare. Maintenance includes monitoring of the crop status, replanting of missing hills and weeding by removing sea weeds, barnacles and sea debris.

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:

菲律宾

区域/州/省:

Bohol

有关地点的进一步说明:

Banacon Island, Getafe

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

2.6 实施日期

如果不知道确切的年份,请说明大概的日期:
  • 50多年前(传统)

2.7 技术介绍

详细说明该技术是如何引入的:
  • 作为传统系统的一部分(> 50 年)
  • 通过项目/外部干预
注释(项目类型等):

This was started in the 1950's by Ernesto Pandi and supported by the DENR through programs such as National Greening Program, Community Based Forest Management

3. SLM技术的分类

3.1 该技术的主要目的

  • 保护生态系统
  • 保持/提高生物多样性
  • 降低灾害风险
  • 适应气候变化/极端天气及其影响
  • 减缓气候变化及其影响
  • 创造有益的经济影响
  • 创造有益的社会影响

3.2 应用该技术的当前土地利用类型

森林/林地

森林/林地

  • Crustaceans breeding ground
产品和服务:
  • 自然保持/保护
  • 娱乐/旅游
  • 自然灾害防护
注释:

Perennial trees

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

  • 森林种植管理
  • 减少基于生态系统的灾害风险

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

3.7 该技术强调的主要土地退化类型

生物性退化

生物性退化

  • Bc:植被覆盖的减少
  • Bh:栖息地丧失

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):

There are (3) planting designs used in the establishment of the mangroves. First, the high density planting of propagules with no lay out to be followed. This planting design can accommodate 30,000 pcs of propagules per hectare. Second, design has a spacing of 1 meter by 1 meter planted in rows and can hold 10,000 pieces of propagules per hectare. Third is the block/cluster design in which each cluster was planted with 750 pieces of propagules with a distance of 30 centimeters apart per propagules. The spacing between the blocks or cluster is 10 meters and can contain 5,000 pieces of propagules per hectare. Maintenance includes monitoring of the crop status, replanting of missing hills and weeding by removing sea weeds, barnacles and sea debris.

作者:

Patricio A. Yambot

日期:

10/07/2016

作者:

Patricio A. Yambot

日期:

10/07/2017

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:

1 hectare

其它/国家货币(具体说明):

Philippine peso

如相关,注明美元与当地货币的汇率(例如1美元=79.9巴西雷亚尔):1美元=:

50.0

注明雇用劳工的每日平均工资成本:

250

4.3 技术建立活动

活动 时间(季度)
1. Harvesting of matured propagules During the month of June
2. Direct seeding of propagules During low tide

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 Person day/ hectare 10.0 250.0 2500.0
植物材料 mangrove propagules pieces 5000.0 1.0 5000.0
技术建立所需总成本 7500.0
技术建立总成本,美元 150.0
如果土地使用者负担的费用少于100%,请注明由谁负担其余费用:

The cost was funded by the government through the Department of Environment and Natural Resources (DENR)

4.5 维护/经常性活动

活动 时间/频率
1. Replanting of propagules monthly
2. Weeding and cleaning of site monthly

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 labour person day 3.0 250.0 750.0
植物材料 propragules pieces 250.0 1.0 250.0
技术维护所需总成本 1000.0
技术维护总成本,美元 20.0
如果土地使用者负担的费用少于100%,请注明由谁负担其余费用:

The cost was funded by the government through the Department of Environment and Natural Resources (DENR)

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
  • 潮湿的

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.
说明该技术是否专门应用于:
  • 不相关

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)
土壤质地(地表以下> 20厘米):
  • 粗粒/轻(砂质)
表土有机质:
  • 低(<1%)

5.4 水资源可用性和质量

水质(未处理):

不可用

该区域正在发生洪水吗?:

规律性:

频繁

关于水质和水量的注释和进一步规范:

Frequent flooding as mangrove forests are a part of the coastal marine ecosystem region

5.5 生物多样性

物种多样性:
栖息地多样性:

5.6 应用该技术的土地使用者的特征

定栖或游牧:
  • 定栖的
非农收入:
  • > 收入的50%
相对财富水平:
  • 平均水平
个人或集体:
  • 团体/社区
机械化水平:
  • 手工作业
性别:
  • 女人
  • 男人
土地使用者的年龄:
  • 中年人

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

5.8 土地所有权、土地使用权和水使用权

土地所有权:
土地使用权:
  • 自由进入(无组织)
用水权:
  • 自由进入(无组织)

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

森林/林地质量

降低
增加

非木材林业生产

降低
增加
注释/具体说明:

Mangrove forest are breeding grounds for various marine animal species such as fish, crabs and shrimps.

社会文化影响

娱乐机会

减少
改良
注释/具体说明:

Establishment of beach forest

社区机构

削弱
加强
注释/具体说明:

Formation of Peoples Organization.

生态影响

减少气候和灾害风险

洪水影响

增加
降低

飓风、暴雨的影响

增加
降低

碳和温室气体的排放

增加
降低
注释/具体说明:

Mangrove forest in Banacon Island has potential in terms of carbon sink by reducing organic pollution.

6.2 该技术的场外影响已经显现

对邻近农田的破坏

增加
减少

对公共/私人基础设施的破坏

增加
减少

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)

水文灾害
该技术是如何应对的?
风暴潮/沿海洪水 非常好

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):

Most of the people in the community are involved in the mangrove forest program because of the support of the Department of Environment and Natural Resources.

6.6 适应

最近是否对该技术进行了修改以适应不断变化的条件?:

具体说明技术的适应性(设计、材料/品种等):

Planting design was modified through clustering for a technology resilient to climate change

6.7 该技术的优点/长处/机会

土地使用者眼中的长处/优势/机会
Innovative planting design using clustering as climate change mitigation measure. Mangroves are planted in cluster to achieve strength. The community and the Peoples' Organization (POs) determine the size of cluster to allow space as passage for boats. Spacing design used is flexible to adjust to local conditions that include depressed grounds, and patches of vegetation.
It provides livelihood for the community since it supports fisheries production and aquaculture.
编制者或其他关键资源人员认为的长处/优势/机会
It provides protection in the coastal communities from storm surges, waves, tides, and currents. Mangrove has buffering capacity to hold back sea waves and reduce wave forces because of its extensive and dense above ground roots.
Mangrove plantation has potentials for ecotourism development.

6.8 技术的弱点/缺点/风险及其克服方法

土地使用者认为的弱点/缺点/风险 如何克服它们?
Mangrove pests and diseases have caused failure of mangrove forest development.Planted propagules that are submerged most of the time have a low mortality rate. Proper site selection of plantation site
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?
Mangrove sites are threatened by urbanization, conversion to agriculture, cutting/overharvesting of mangrove trees for industrial uses such as timber and charcoal Strict implementation of rules, policies related to the protection and conservation of coastal areas and mangrove forest sites.

7. 参考和链接

7.1 信息的方法/来源

  • 实地考察、实地调查

3

  • 与土地使用者的访谈

3

(现场)数据是什么时候汇编的?:

10/08/2016

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