Desire for Greener Land

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Human Environment Mixed land per household (ha) 10,000 Implementation activities, inputs and costs Establishment activities 1. Drilling 2. Installation Maintenance/recurrent activities 1. Desilting of the filter 2. Repairs Land user: employee (company, government) Population density: 10-50 persons/km 2 Annual population growth: 0.5% - 1% Land ownership: state Land use rights: communal (organised) Water use rights: communal (organised) Relative level of wealth: average, which represents 70% of land users; 75% of the total land area is owned by average land users Importance of off-farm income: > 50% of all income Access to service and infrastructure: low: financial services; moderate: health, technical assistance, employment, market, energy, roads & transport, drinking water and sanitation; high: education Market orientation: mixed (subsistence and commercial) Technical drawing Establishment inputs and costs per unit Schematic representation of the main components of a recharge well. The flood water retained behind the gabion check dam flows through the outer tube and the gravel filter into the water table. Clogging of the filter is one of the major problems to be considered and solved. (Ouessar M.) Inputs Costs (US$) % met by land user Labour 7000 0 Construction material 1000 0 TOTAL 8000 0 Maintenance/recurrent inputs and costs per unit per year Inputs Costs (US$) % met by land user Labour 500 0 Construction material 100 0 TOTAL 600 0 Remarks: The costs per unit can be taken as per one hectare of land benefiting from the recharge well. Labour is the most determining factor affecting the costs. The local wage rate is 10 US$/day. SLM Technology: Recharge well, Tunisia DESIRE – WOCAT 2012 127
Assessment Impacts of the Technology Production and socio-economic benefits Production and socio-economic disadvantages increased drinking water availability increased water availability / quality for livestock increased irrigation water availability / quality Socio-cultural benefits Socio-cultural disadvantages conflict mitigation improved conservation / erosion knowledge Ecological benefits Ecological disadvantages recharge of groundwater table / aquifer improved harvesting / collection of water reduced hazard towards adverse events (flooding, drought) reduced salinity Off-site benefits Off-site disadvantages increased water availability reduced downstream flooding reduced damage on public / private infrastructure Contribution to human well-being/livelihoods increased availability of water for drinking, agriculture and livestock Benefits/costs according to land user Long-term benefits are slightly reduced due to silting problems. Acceptance/adoption: risks of contamination of aquifers reduction of surface water to reach downstream areas Benefits compared with costs short-term: long-term: Establishment very positive positive Maintenance/recurrent very positive positive No land-user families have implemented the technology with external material support. It is solely constructed by the government agencies. Concluding statements Strengths and how to sustain/improve Weaknesses and how to overcome Replenishment of the aquifer Good selection of the site and drilling methods Silting up of the filter Maintenance of the filters. Malfunction due to aquifer geometry and characteristics Good selection of the sites Retain water for downstream users Proper watershed management plan Key reference(s): Yahyaoui, H., Ouessar, M. 2000. Abstraction and recharge impacts on the ground water in the arid regions of Tunisia: Case of Zeuss-Koutine water table. UNU Desertification Series, 2: 72-78.; Temmerman, S. 2004. Evaluation of the efficiency of recharge wells on the water supply to the water table in South Tunisia. Graduation dissertation, Ghent University, Belgium. Contact person(s): Ouessar Mohamed, Institut des Régions Arides, 4119 Medenine, Tunisia, Yahyaoui Houcine, CRDA, 4100 Medenine, Tunisia, Med.ouessar@ira.agrinet.tn 128 DESIRE – WOCAT Desire for Greener Land
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Desire for Greener Land Options for
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DESIRE - WOCAT Desire for Greener L
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Co-published by University of Bern,
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Cross-slope barriers Progressive be
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The present DESIRE publication desc
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Contributing authors and DESIRE con
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Desire for Greener Land - Options f
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XIV DESIRE - WOCAT Desire for Green
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Figure 1: Desertification vulnerabi
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In DESIRE, WOCAT methods and tools
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Part 1
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8 DESIRE - WOCAT Desire for Greener
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Figure 1: Methodological framework
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to Russia and China (see Table 1).
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DRI = 5.4 Very high desertification
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Table 2 provides a more detailed de
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decision. This leads to solutions b
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Aims and objectives This penultimat
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Figure 7: The DESIRE Project has fo
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References: n EEA-European Environm
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Area (x1000 Ha) Major land use type
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Major land degradation types per st
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Rate of degradation per study site
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Production services were affected o
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% of area under conservation measur
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Figure 16: Effectiveness of conserv
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Conservation impact on ecosystem se
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Analysis of SLM technologies Introd
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Table 2: WOCAT categories of SLM me
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Origin of technology SLM technologi
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Table 3: Sensitivity of and toleran
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No. of case studies Land Ownership
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No. of case studies Increased farm
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No. of case studies Improved harves
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No. of case studies Increased plant
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No. of case studies No. of case stu
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Analysis of SLM approaches Introduc
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system is focused on control rather
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References: n Alkemade, J. R. M., v
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actually implemented in the field.
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Concerning SLM, the most widely app
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Part 2 DESIRE - WOCAT Desire for Gr
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Desire for Greener Land Mexico Land
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2.1 SLM case studies Case studies -
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Case studies - titles and short des
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Classification Land use problems: S
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Assessment Impacts of the Technolog
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Classification Land use problems: O
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Class sification Land use problemss
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Classification Land use problems: T
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Classification Land use problems: O
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Problem, objectives and constraints
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Impacts of the Approach Improved su
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Input: - Equipment (machinery, tool
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Problems, objectives, and constrain
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Desire for Greener Land Opopejo Qui
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2.2 Mapping case studies This secti
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Land recommendation Land conservati
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Portugal - Maçao The Maçao area h
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Italy - Rendina The Rendina area ex
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Greece - Nestos This area has chemi
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Turkey - Eskişehir The Eskeheşir
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Tunisia - Koutine The Koutine area
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Russia - Novy Land use in the Novy
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Botswana - Boteti The main land use
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Chile - Cauquenes The Cauquenes are
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252 DESIRE - WOCAT Desire for Green
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Status of land degradation, sustain
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Examples of potential SLM technolog
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IV Up-scaling SLM strategies Actual
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Case study of the DESIRE methodolog
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II Identifying, evaluating and sele
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The results showed that the best op
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IV Up-scaling SLM strategies Some r
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Explanation pages of case studies:
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Cropland (or grazing land, mixed la
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Explanation pages of case studies:
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Here appears an organogram - if ava
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Pictograms SLM technology Land use
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Logos of partners 282 DESIRE - WOCA
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Desire for Greener Land

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