Mapping rainwater management strategies at landscape scale
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Mapping rainwater management strategies at landscape scale Nile 3 on targeting and scaling out. Overview. Introduction Concepts used (definitions) Modeling framework with illustration Using the maps Up-coming research. Targeting and scaling out tool. Objective

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Mapping rainwater management strategies at landscape scale Nile 3 on targeting and scaling out

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Mapping rainwater management strategies at landscape scale

Nile 3 on targeting and scaling out


Overview

  • Introduction

  • Concepts used (definitions)

  • Modeling framework with illustration

  • Using the maps

  • Up-coming research


Targeting and scaling out tool

  • Objective

  • Feasibility maps that includes bio-physical and socio-economic criteria

  • Landscape approach to rainwater management modeling

intro concept frameworkuse up-coming


Overview

  • Introduction

  • Concepts used (definitions)

  • Modeling framework with illustration

  • Using the maps

  • Up-coming research


Some definitions

  • Rainwater management practice = farmers’ choice to improve water retention or water productivity

    • Soil and water conservation (bunds, …)

    • Water harvesting

    • Tree (agro-forestry)

    • Livestock and grassland management

    • Crops and fertility management

  • Intervention = “external actor” to enable a practice change

intro concept frameworkuse up-coming


Landscape approach to water

intro concept frameworkuse up-coming


Landscape approach to water

Highland : infiltration ↑

Midlands : SWC ↑

Lowlands : efficiency ↑

intro concept frameworkuse up-coming


Rainwater management strategy

intro concept frameworkuse up-coming


Overview

  • Introduction

  • Concepts used (definitions)

  • Modeling framework with illustration

  • Using the maps

  • Up-coming research


Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice

(diversion, terraces, trees,…)

Modeling framework

Transformation into spatially explicit variables and threshold definitions

Mapping RMS at landscape scale

intro concept frameworkuse up-coming

Feasibility map

practice A

Feasibility map

practice B

Feasibility map

practice C

Rainwater management strategy map


Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice

(diversion, terraces, trees,…)

Modeling framework

Database of 80 practices

Transformation into spatially explicit variables and threshold definitions

Mapping RMS at landscape scale

intro concept frameworkuse up-coming

Feasibility map

practice A

Feasibility map

practice B

Feasibility map

practice C

Rainwater management strategy map


Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice

(diversion, terraces, trees,…)

Modeling framework

Transformation into spatially explicit variables and threshold definitions

Mapping RMS at landscape scale

intro concept frameworkuse up-coming

Feasibility map

practice A

Feasibility map

practice B

Feasibility map

practice C

Rainwater management strategy map


Suitability criteria


Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice

(diversion, terraces, trees,…)

Modeling framework

Transformation into spatially explicit variables and threshold definitions

Mapping RMS at landscape scale

intro concept frameworkuse up-coming

Feasibility map

practice A

Feasibility map

practice B

Feasibility map

practice C

Rainwater management strategy map


Getting single feasibilty maps

Bio-physical suitability

Willingness to adopt

Feasibility map

intro concept frameworkuse up-coming


Biophysical suitability maps

equal weight aggregation

intro concept frameworkuse up-coming


Adoption maps : Small area estimation technique


Adoption rule for orchard


Adoption rule for SWC


Adoption rule for diversion


Willingness of adoption maps

intro concept frameworkuse up-coming


Feasibility maps

intro concept frameworkuse up-coming


Identification of bio-physical conditions, socio-economic and institutional drivers for each individual practice

(diversion, terraces, trees,…)

Modeling framework

Transformation into spatially explicit variables and threshold definitions

Mapping RMS at landscape scale

intro concept frameworkuse up-coming

Feasibilty map

practice A

Feasibilty map

practice B

Feasibilty map

practice C

Rainwater management strategy map


Strategy quantification


Aggregation into strategies at landscape scale

zonal overlay with a landscape layer

Bio-physical map, willingness of adoption map, feasibility map

intro concept frameworkuse up-coming


Overview

  • Introduction

  • Concepts used (definitions)

  • Modeling framework with illustration

  • Using the maps

  • Up-coming research


Using the maps

  • High uncertainty

  • Difficulty to validate the maps

  • Entry point to start a discussion with community

  • Towards an open source GIS tool for policy makers, research centers, NGO, extension service

intro concept frameworkuse up-coming


Overview

  • Introduction

  • Concepts used (definitions)

  • Modeling framework with illustration

  • Using the maps

  • Up-coming research


Up-coming research

  • Map validation in 4 new watersheds

    • Using the “happy strategy game”

    • Farm household survey (600 farmers)

  • Impact assessment

    • on hydrology, ecosystem services, livelihoods

  • Explorative scenarios

intro concept frameworkuse up-coming


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