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Rwh And Ecosystems Unep

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Information about Rwh And Ecosystems Unep

Published on November 27, 2008

Author: vicmanlapaz

Source: slideshare.net

Description

Regional Conference for Southeast Asia on Rainwater Harvesting in IWRM: An ExChange of

Policies and Learnings

November 25-26, 2008
Davao City
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Rainwater Harvesting and Ecosystems Elizabeth Khaka UNEP / Division of Environmental Policy Implementation Regional Conference for Southeast Asia on Rainwater Harvesting in IWRM: An Exchange of Practices and Learning 25-26 November, 2008

Flow Introduction Ecosystems services Contribution of ecosystems Ecosystems degradation RWH and ecosystems UNEP ecosystems and RWH initiative

Introduction

Ecosystems services

Contribution of ecosystems

Ecosystems degradation

RWH and ecosystems

UNEP ecosystems and RWH initiative

Introduction Definition ecosystem- ‘a dynamic complex of plant, animal, and microorganism communities and the nonliving environment interacting as a functional unit. Humans are an integral part of ecosystems’. CBD

Definition

ecosystem- ‘a dynamic complex of plant, animal, and microorganism communities and the nonliving environment interacting as a functional unit. Humans are an integral part of ecosystems’. CBD

Introduction Ecosystems major source of livelihood to billions Dependency high in developing countries

Ecosystems major source of livelihood to billions

Dependency high in developing countries

Ecosystems S ervices

Provisioning Recreation Regulating

Contribution of ecosystems Flood prevention US$350 billion at 1994 Recreational value US$304 billion Reef habitats US$375 billion Fisheries contributes 16-90% of global protein

Flood prevention

US$350 billion at 1994

Recreational value

US$304 billion

Reef habitats

US$375 billion

Fisheries contributes 16-90% of global protein

Contribution of ecosystems Malaysia mangrove s US$ 35 million a year Thailand coastal protection US$ 165 million Indonesia mangroves US$ 86 million

Malaysia mangrove s

US$ 35 million a year

Thailand coastal protection

US$ 165 million

Indonesia mangroves

US$ 86 million

Ecosystems degradation 60% of ecosystem services (the benefits people obtain from ecosystems) were heavily degraded over the last 50 years (the Millennium Ecosystem Assessment) Especially aquatic ecosystems are declining more rapidly than other ecosystems

60% of ecosystem services (the benefits people obtain from ecosystems) were heavily degraded over the last 50 years

(the Millennium Ecosystem Assessment)

Especially aquatic ecosystems are declining more rapidly than other ecosystems

Framework Ecosystem Services Provisioning (e.g., food, water and fiber) Regulating (e.g., climate regulation and water) Cultural (e.g., spiritual and aesthetic) Supporting (e.g., soil formation) Human Well-being Basic material for a good life Health Good Social Relations Security Freedom of choice and action Direct Drivers of Change Changes in land use Species introduction or removal Technology adaptation and use External inputs (e.g., irrigation) Resource consumption Climate change Natural physical and biological drivers (e.g., volcanoes) Ind irect Drivers of Change Demographic Economic (globalization, trade, market and policy framework) Sociopolitical (governance and institutional framework) Science and Technology Cultural and Religious

Ecosystem Services

Provisioning

(e.g., food, water and fiber)

Regulating

(e.g., climate regulation and water)

Cultural

(e.g., spiritual and aesthetic)

Supporting

(e.g., soil formation)

Human Well-being

Basic material for a good life

Health

Good Social Relations

Security

Freedom of choice and action

Direct Drivers of Change

Changes in land use

Species introduction or removal

Technology adaptation and use

External inputs (e.g., irrigation)

Resource consumption

Climate change

Natural physical and biological

drivers (e.g., volcanoes)

Ind irect Drivers of Change

Demographic

Economic (globalization, trade,

market and policy framework)

Sociopolitical (governance and

institutional framework)

Science and Technology

Cultural and Religious

Drivers of Ecosystem Degradation Climate Change Desertification Frequent Droughts and Floods Over-exploitation Groundwater Surface water Pollution Habitat Change Urbanization Soil Erosion Large Dams Direct Drivers Indirect Drivers Economic Drivers Poverty Sociopolitical Drivers Insensibility of Water Resource Limitation Centralization of Water Supply

Climate Change

Desertification

Frequent Droughts

and Floods

Over-exploitation

Groundwater

Surface water

Pollution

Habitat Change

Urbanization

Soil Erosion

Large Dams

Economic Drivers

Poverty

Sociopolitical Drivers

Insensibility of Water Resource Limitation

Centralization of Water Supply

Climate Change Desertification Maintaining flora-trees grass Frequent Droughts and Floods Mitigate floods -detaining Drought-detain flood water

Desertification

Maintaining flora-trees grass

Frequent Droughts and Floods

Mitigate floods -detaining

Drought-detain flood water

Over-exploitation Improve storage Groundwater recharge Individual and community structures Soil Reduce over exploitation Irrigation Household Industrial

Improve storage

Groundwater recharge

Individual and community structures

Soil

Reduce over exploitation

Irrigation

Household

Industrial

Pollution Pollutant Discharges Retaining and detaining urban runoff -reduces the potential for pollutant discharges from overflow Controlling non-point source of pollution is an important broader strategy for the protection of surface water quality in urban areas.

Pollutant Discharges

Retaining and detaining urban runoff -reduces the potential for pollutant discharges from overflow

Controlling non-point source of pollution is an important broader strategy for the protection of surface water quality in urban areas.

Habitat Change Urbanization Prevents unban floods Groundwater recharge Soil Erosion Reduce runoff Trees- vegetation Large Dams Reduce reliance on water storage dams can be reduced

Urbanization

Prevents unban floods

Groundwater recharge

Soil Erosion

Reduce runoff

Trees- vegetation

Large Dams

Reduce reliance on water storage dams can be reduced

Economic Drivers Poverty Improve production –agriculture Catalyst for development Improve access to water and sanitation Reduce time for fetching water-girl child and school Water for sanitation

Poverty

Improve production –agriculture

Catalyst for development

Improve access to water and sanitation

Reduce time for fetching water-girl child and school

Water for sanitation

RWH for Ecosystem Services Provisioning Services Fresh Water Food Timber RWH

RWH for Ecosystem Services Water Regulation Erosion Regulation Natural Hazard Regulation Water Purification Regulating Services RWH

RWH for Ecosystem Services Water Cycling Supporting Services RWH

Conclusions and Recommendations Contributes to ecosystems rehabilitation -addresses drivers of ecosystem degradation Plays an important role in ecosystems and human well being Link with ecosystems important to avoid over-abstraction Plan RWH in IWRM. Awareness creation

Contributes to ecosystems rehabilitation -addresses drivers of ecosystem degradation

Plays an important role in ecosystems and human well being

Link with ecosystems important to avoid over-abstraction

Plan RWH in IWRM.

Awareness creation

UNEP P ublication on RWH & ecosyst e m s Introduction and background 1a) Introduction, scope 1b) Background: rainwater harvesting the concept 1c) Ecosystems framework and human wellbeing RWH and catchment /watershed management 2 a). RWH and surface water 2 b). RWH and ground water recharge RWH and agriculture 3 a). RWH and crop production 3 b). RWH and livestock production 3 c). RWH and cash crop production (non food production)

Introduction and background

1a) Introduction, scope

1b) Background: rainwater harvesting the concept

1c) Ecosystems framework and human wellbeing

RWH and catchment /watershed management

2 a). RWH and surface water

2 b). RWH and ground water recharge

RWH and agriculture

3 a). RWH and crop production

3 b). RWH and livestock production

3 c). RWH and cash crop production (non food production)

UNEP P ublication on RWH & ecosyst e m s RWH and forestry 4 a). RWH and forests (incl. aspects on natural and plantation) 4 b). RWH and agroforestry RWH for water supply in rural and urban areas 5 a) RWH and domestic water supply in rural urban context 5 b) RWH and industry RWH in the future 7 a) climate change and adaptation: the role of RWH 7 b) global drivers of change/ ecosystems degradation & water stress Conclusions and recommendations 8 a) Synthesis and discussions 8 b) Policy implications: gaps and pot. ways ahead

RWH and forestry

4 a). RWH and forests (incl. aspects on natural and plantation)

4 b). RWH and agroforestry

RWH for water supply in rural and urban areas

5 a) RWH and domestic water supply in rural urban context

5 b) RWH and industry

RWH in the future

7 a) climate change and adaptation: the role of RWH

7 b) global drivers of change/ ecosystems degradation & water stress

Conclusions and recommendations

8 a) Synthesis and discussions

8 b) Policy implications: gaps and pot. ways ahead

Thank You

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