1.2 Coordonnées des personnes-ressources et des institutions impliquées dans l'évaluation et la documentation de la Technologie

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Bukoba district council (Bukoba district council) - Tanzanie

Nom du ou des institutions qui ont facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Missenyi District Council (Missenyi District Council) - Tanzanie

1.3 Conditions relatives à l'utilisation par WOCAT des données documentées

Quand les données ont-elles été compilées (sur le terrain)?

03/06/2014

Le compilateur et la(les) personne(s) ressource(s) acceptent les conditions relatives à l'utilisation par WOCAT des données documentées:

Oui

1.4 Déclaration sur la durabilité de la Technologie décrite

Est-ce que la Technologie décrite ici pose problème par rapport à la dégradation des terres, de telle sorte qu'elle ne peut pas être déclarée comme étant une technologie de gestion durable des terres?

Non

1.5 Référence au(x) questionnaire(s) sur les Approches de GDT

2.1 Courte description de la Technologie

Définition de la Technologie:

Area enclosures for protection of riverine ecosystem and purposeful regeneration of mulching and pasture materials for cut and carry

2.2 Description détaillée de la Technologie

Description:

Area enclosure is done in low grazing range lands of average slope 2 – 5%. Enclosure is done by demarcating the fragile land that has direct impact to the riverine ecosystem. The land is exposed to degradation through overgrazing and soil compaction by livestock, bush fire, river bank erosion and reduced quality of pasture spps. Demarcation is done by planting trees in identified area situated about 300 meters from the riverine buffer zone. The preferred plants are Ficus thonigii. The average space between trees is 2 meters. Physical enclosure is supported and enhanced by use of protective bylaws. Reseeding of nutritious pasture species is also done and the area is left under protection for growth and regeneration of mulch, pastures and other vegetation to take place. The common pasture species reseeded are Leucaena spp, cannavaria brazile, clitoria tenatea, sesbania sesban, stylothensis, cajanus cajan, chloris gayana, branchalia spps . Direct grazing is prohibited and mulch and pasture materials are accessed through controlled and organized cut and carry.
Area enclosure is meant for rehabilitation of the riverine ecosystem and prevention of further degradation. Mulch and high nutritious pasture materials that are accessed through organized cut and carry procedures improve crop and animal productivity and have both direct and indirect impact to diversification of income sources and thus play significant role in putting the triple win solution into reality.

Purpose of the Technology: Purpose: 1) To improve vegetative cover, reduce soil erosion and prevent and rehabilitate degradation of the riverine ecosystem 2) Ensure sustainable availability and accessibility of mulch and nutritious pasture that are need for increased crop and livestock productivity 3) Promote use of environmental friendly exploitation of land resources (i.e. mulch, pasture, grass carpeting and other materials) and 4) Promote direct and indirect diversification of income sources.

Establishment / maintenance activities and inputs: Establishment and recurrent activities includes: area identification and measurement; slashing and land preparation for boundary tree planting and pasture reseeding; collection of planting materials and planting along defined boundaries for demarcation; procurement of seed and reseeding of nutritious and palatable pasture species; selective weeding; area reshaping and gap filling.

Natural / human environment: Bio-physically the area is semi natural grassland with grasses and shrubs trees. The technology is a combination of management and vegetative measure (area enclosure, demarcation using ficus thonigii and reseeding of nutritious pasture). Climatic zone is sub humid with 210 length of growing period (LGP). Slope category is gentle lying between 2-5%. Soil texture is fine heavy (clay) with medium soil depth.
Social economic wise the area is dominated by handy tools typology of mechanization. Production system is mixed (both for subsistence and commercial purposes). Inputs used includes tools (hand hoe, machete, sickles, spade and mattock), light and heavy labour, pasture seeds and tree planting materials with average annual costs of 1084.3 USD per hectare. Land ownership in technological area is communal.

2.3 Photos de la Technologie

2.5 Pays/ région/ lieux où la Technologie a été appliquée et qui sont couverts par cette évaluation

2.6 Date de mise en œuvre de la Technologie

Si l'année précise est inconnue, indiquez la date approximative: :

• il y a moins de 10 ans (récemment)

2.7 Introduction de la Technologie

Spécifiez comment la Technologie a été introduite: :

• grâce à l'innovation d'exploitants des terres
• par le biais de projets/ d'interventions extérieures

Commentaires (type de projet, etc.) :

The technology is a result of the recent SLM participatory dialogues made between land users and SLM specialist (external experts). In these dialogues both endogenous and technical knowledge based were given equal weight and were combined in a complementary manner. Land users alos were empowered to take self initiative and ownership of the decision making process.

3.1 Principal(aux) objectif(s) de la Technologie

• réduire, prévenir, restaurer les terres dégradées
• préserver l'écosystème
• conserver/ améliorer la biodiversité

3.2 Type(s) actuel(s) d'utilisation des terres, là où la Technologie est appliquée

Commentaires:

Major land use problems (compiler’s opinion): Soil erosion due to downstream run off exacerbated by loss of vegetation cover due to bush fire and soil compaction caused by overgrazing, degradation of the riverine ecosystem caused by River bank erosion, land bareness and exposure to direct sunlight and excessive unproductive loss of both green and blue water.

Major land use problems (land users’ perception): River pollution, erosion of the river bank, land bareness and reduction of mulching and pasture materials.

Nomadism: People with large herd of animal move with their animals in search of adequate pasture
Semi-nomadism / pastoralism: Exercised with people with few stock.
Cut-and-carry/ zero grazing: done by farmers who usuall keep dairy goats and cattles.
Grazingland comments: Area enclosure is largely meant to control land degradation of the riverine ecosystem through overgrazing by people who own large number of stocks at the same time promote organized, sustainable and environmental friendly exploitation of the fragile land lands (e.g. controlled cut and carry rather than direct grazing in the riverine ecosystem).

3.3 Informations complémentaires sur l'utilisation des terres

Approvisionnement en eau des terres sur lesquelles est appliquée la Technologie:

• pluvial

Nombre de période de croissance par an: :

• 2

Précisez:

Longest growing period in days: 120, Longest growing period from month to month: September to December Second longest growing period in days: 90 Second longest growing period from month to month: March to May

Densité d'élevage/ chargement (si pertinent):

50-100 LU /km2

3.4 Groupe de GDT auquel appartient la Technologie

• fermeture de zones (arrêt de tout usage, appui à la réhabilitation)

3.5 Diffusion de la Technologie

Spécifiez la diffusion de la Technologie:

• répartie uniformément sur une zone

Si la Technologie est uniformément répartie sur une zone, indiquez la superficie couverte approximative:

• < 0,1 km2 (10 ha)

Commentaires:

Includes enclosed and demarcated area closer and around the riverine ecosystem.

3.6 Mesures de GDT constituant la Technologie

Commentaires:

Main measures: vegetative measures, management measures
Specification of other management measures: Area enclosure to promote vegetative regeneration and organized use
Type of vegetative measures: aligned: -along boundary, scattered / dispersed

3.7 Principaux types de dégradation des terres traités par la Technologie

Commentaires:

Main causes of degradation: soil management (Compaction due to overstocking, accerated runoff and erosion.), crop management (annual, perennial, tree/shrub) (Reduction of mulching and pasture materials), deforestation / removal of natural vegetation (incl. forest fires) (Rampant bush fire), over-exploitation of vegetation for domestic use (Un0rganize exploitation of mulching materials), overgrazing (Uncontrolled grazing), disturbance of water cycle (infiltration / runoff) (Loss of green water through unproductive evaporation and blue water through ruoff as well as evaporation), population pressure (Exessive eploitation of the grassland and forests in the riverine ecosystem), poverty / wealth (Reliance on wood as the sole source of fuel), education, access to knowledge and support services (Inadequate acess to extension service due to shortage of extension staff), governance / institutional (Weak and inactive institutions to deal with environmental issues)

Secondary causes of degradation: change in temperature (Climatic change and variability due to green gas emmision caused by bush fire), change of seasonal rainfall (Climatic change and variability due to green gas emmision caused by bush fire), Heavy / extreme rainfall (intensity/amounts) (Climatic change and variability due to green gas emmision caused by bush fire), droughts (Climatic change and variability due to green gas emmision caused by bush fire)

3.8 Prévention, réduction de la dégradation ou réhabilitation des terres dégradées

Spécifiez l'objectif de la Technologie au regard de la dégradation des terres:

• réduire la dégradation des terres
• restaurer/ réhabiliter des terres sévèrement dégradées

4.2 Spécification/ explications techniques du dessin technique

Technical knowledge required for field staff / advisors: moderate (Is simply retraining on some principles of sustainable land management, law and rules guiding the fragile ecosystems, participatory training skills and grassroots facilitation skills.)

Technical knowledge required for land users: moderate (Largely exposure to act and policies guiding the fragile ecosystems and learning by doing on the job,)

Main technical functions: control of raindrop splash, control of dispersed runoff: impede / retard, control of concentrated runoff: impede / retard, improvement of ground cover, improvement of topsoil structure (compaction), stabilisation of soil (eg by tree roots against land slides), increase / maintain water stored in soil, improvement of water quality, buffering / filtering water, sediment retention / trapping, sediment harvesting, promotion of vegetation species and varieties (quality, eg palatable fodder)

Aligned: -along boundary
Vegetative material: T : trees / shrubs
Number of plants per (ha): 400
Vertical interval between rows / strips / blocks (m): 1 m
Spacing between rows / strips / blocks (m): 1 m
Vertical interval within rows / strips / blocks (m): 1 m
Width within rows / strips / blocks (m): 1 m

Scattered / dispersed
Vegetative material: T : trees / shrubs, G : grass
Number of plants per (ha): various
Vertical interval between rows / strips / blocks (m): various
Spacing between rows / strips / blocks (m): various
Vertical interval within rows / strips / blocks (m): various
Width within rows / strips / blocks (m): various

Trees/ shrubs species: ficus thonigii planted arround the boundary and leguminous pasture shrubs planted within the area (stlothensis, lucaena spps)
Grass species: Randomly planted (chloris gayana, desmodium spp and Calliandra)
Slope (which determines the spacing indicated above): 2 - 5%%
Gradient along the rows / strips: 2 - 5%%
Change of land use practices / intensity level: Introduction of organized cut and carry exploitation of mulching and pasture materials
Other type of management: Boundary enclosure, law enforcement

4.3 Informations générales sur le calcul des intrants et des coûts

autre/ monnaie nationale (précisez):

Tanzanian shillings

Indiquer le taux de change du dollars en monnaie locale (si pertinent): 1 USD= :

1700,0

4.4 Activités de mise en place/ d'établissement

	Activité	Type de mesures	Calendrier
1.	Site/boundary identification	Végétale	October
2.	Site preparation for reseeding and demarcation (slashing, selective tilling, hole digging)	Végétale	October
3.	Planting of demarcation trees, leguminous shrubs and grass pasture	Végétale	November
4.	Fertilizer application (DAP)	Végétale	Once
5.	Meeting on awareness creation and formalization of the practice (change of resource use practice)	Modes de gestion	once

4.5 Coûts et intrants nécessaires à la mise en place

	Spécifiez les intrants	Unité	Quantité	Coûts par unité	Coût total par intrant	% des coût supporté par les exploitants des terres
Main d'œuvre	Site/boundary identification	Mandays	15,0	1,13333	17,0	100,0
Main d'œuvre	Site preparation for reseeding and demarcation (slashing, selective tilling, hole digging)	Mandays	15,0	3,9213	58,82
Main d'œuvre	Planting of demarcation trees, leguminous shrubs and grass pasture	Mandays	15,0	3,9213	58,82
Main d'œuvre	Fertilizer application (DAP)	Mandays	15,0	1,13333	17,0
Equipements	Tools	Number	5,0	3,0	15,0	100,0
Matériel végétal	Seeds	ha	1,0	235,29	235,29
Matériel végétal	Seedlings	ha	1,0	117,65	117,65
Engrais et biocides	Fertilizer	kg	125,0	0,588	73,5
Autre	Meeting on awareness creation and formalization of the practice (change of resource use practice)	Mandays	15,0	3,9213	58,82	100,0
Coût total de mise en place de la Technologie					651,9

Commentaires:

Duration of establishment phase: 2 month(s)

4.6 Activités d'entretien/ récurrentes

	Activité	Type de mesures	Calendrier/ fréquence
1.	Selective weeding and gap filling	Végétale	Once
2.	Supervision and monitoring	Végétale	monthly
3.	Organized cut and carry of Mulching and pasture materials	Modes de gestion	Weekly
4.	monitoring area closure and organized cut and carry	Modes de gestion	Weekly

4.7 Coûts et intrants nécessaires aux activités d'entretien/ récurrentes (par an)

	Spécifiez les intrants	Unité	Quantité	Coûts par unité	Coût total par intrant	% des coût supporté par les exploitants des terres
Main d'œuvre	Selective weeding and gap filling	Mandays	15,0	1,76466	26,47	100,0
Main d'œuvre	Supervision and monitoring	Mandays	15,0	3,53	52,95	100,0
Main d'œuvre	Organized cut and carry of Mulching and pasture materials	Mandays	10,0	17,647	176,47	100,0
Main d'œuvre	monitoring area closure and organized cut and carry	Mandays	10,0	17,647	176,47	100,0
Coût total d'entretien de la Technologie					432,36

Commentaires:

Machinery/ tools: machete and sickles.
The costs were calculated per unit of ha as per 13/06/2014.

4.8 Facteurs les plus importants affectant les coûts

Décrivez les facteurs les plus importants affectant les coûts :

labour is the most determinant factor.

5.1 Climat

5.2 Topographie

Commentaires et précisions supplémentaires sur la topographie:

Landforms: Plateau/plains (ranked 1, is largely applied in extended cancave lower range land pouring water to the river) and footslopes (ranked 2, partly includes the convex the convex hill slopes)

Slopes on average: Gentle (The area is largely extended gentle sloppy lower range land plateau receiving water from the the upper landscape and draining into the lower Ngono river which drains into Kagera river)

5.3 Sols

Si disponible, joignez une description complète du sol ou précisez les informations disponibles, par ex., type de sol, pH/ acidité du sol, capacité d'échange cationique, azote, salinité, etc.

Soil depth on average: Moderately deep (ranked 1, The lower range land is moderately deep it receives eroded soil from the upper and mid sloppy landscape) and shallow (ranked 2, largely include the the area between the upper and lower mid landscape)
Soil texture: Coarse/light (ranked 1, the lower side is largely light sandy soil) and fine/heavy (ranked 2, some patches fine clay soil)
Soil fertility: Low (Nutrient eroded by runoff into the river)
Topsoil organic matter: Low (top soil eroded by runoff into the river)
Soil drainage / infiltration: Medium (ranked 1, caused by the dominance of sand soil) and poor (ranked 2, due to trampling by animals)
Soil water storage capacity: Low (due to the dominance of sand soil)

5.4 Disponibilité et qualité de l'eau

Commentaires et précisions supplémentaires sur la qualité et la quantité d'eau:

Ground water table: On surface (ranked 1, along the flowing river Ngono) and <5m (ranked 2, the area is within the riverine ecosystem)
Availability of surface water: Medium (The main water source is Kagera river with water flows all year round)
Water quality (untreated): Poor drinking water (treatment required, Kagera river receives partly receives water drained from the upper kibanja, Kikamba and other distant places. Kagera river water therefore is contaminated can not be consumed untreated)

5.5 Biodiversité

Commentaires et précisions supplémentaires sur la biodiversité:

Overgrazing has left the area with disappearance of some palatable and nutritious pastures, bushfire and deforestation also has disturbed tree and shrub composition and the soil microbiology.

5.6 Caractéristiques des exploitants des terres appliquant la Technologie

Indiquez toute autre caractéristique pertinente des exploitants des terres:

Land users applying the Technology are mainly common / average land users
Population density: 50-100 persons/km2
Annual population growth: 1% - 2%

30% of the land users are very rich and own 35% of the land.
60% of the land users are average wealthy and own 50% of the land.
10% of the land users are poor.
and own 15% of the land.

Off-farm income specification: Generally 90% relies on agriculture as their main source of livelihood. Only a few are engaged in off-farm activities like petty trading, kiosk, brick making e.t.c.
Market orientation: Mixed (Livestock are largely kept for domestic use e.g. milk, meat and manure and parlty for commercial purposes)

5.7 Superficie moyenne des terres détenues ou louées par les exploitants appliquant la Technologie

5.8 Propriété foncière, droits d’utilisation des terres et de l'eau

Propriété foncière:

• individu, sans titre de propriété

Droits d’utilisation des terres:

• individuel

Droits d’utilisation de l’eau:

• accès libre (non organisé)

Commentaires:

In Tanzania land is a state property. Land use right is largely individual not titled and is acquired through inheritance or purchase through traditional or customary procedures.

5.9 Accès aux services et aux infrastructures

6.1 Impacts sur site que la Technologie a montrés

Impacts socio-économiques

Production

Revenus et coûts

Impacts socioculturels

Impacts écologiques

Cycle de l'eau/ ruissellement

Sols

Biodiversité: végétale, animale

Réduction des risques de catastrophe et des risques climatiques

6.2 Impacts hors site que la Technologie a montrés

6.3 Exposition et sensibilité de la Technologie aux changements progressifs et aux évènements extrêmes/catastrophes liés au climat (telles que perçues par les exploitants des terres)

Changements climatiques progressifs

Changements climatiques progressifs

	Saison	Type de changements/ extrêmes climatiques	Comment la Technologie fait-elle face à cela?
températures annuelles		augmente	bien

Extrêmes climatiques (catastrophes)

Catastrophes météorologiques

	Comment la Technologie fait-elle face à cela?
pluie torrentielle locale	pas connu
tempête de vent locale	pas connu

Catastrophes climatiques

	Comment la Technologie fait-elle face à cela?
sécheresse	pas bien

Catastrophes hydrologiques

	Comment la Technologie fait-elle face à cela?
inondation générale (rivière)	pas connu

Autres conséquences liées au climat

Autres conséquences liées au climat

	Comment la Technologie fait-elle face à cela?
réduction de la période de croissance	pas bien

Commentaires:

The technology was modified to become more tolerant through organized cut and carry of mulching and pasture materials.

6.4 Analyse coûts-bénéfices

Quels sont les bénéfices comparativement aux coûts de mise en place (du point de vue des exploitants des terres)?

Quels sont les bénéfices comparativement aux coûts d'entretien récurrents (du point de vue des exploitants des terres)?

Commentaires:

Mulching and pasture have short maturing period and this causes land users to realize rewards right from the beginning of the technology and the benefit increases more with time.

6.5 Adoption de la Technologie

Commentaires:

Comments on acceptance with external material support: The technology is applied only on communally owned area nearby the fragile reverine ecosystem. Implementation is done by empowered community based on and guided with decision reached by the whole community and law reinforcement. Is not based on individual voluntarism and option.

Comments on spontaneous adoption: The technology is applied only on communally owned area nearby the fragile reverine ecosystem. Implementation is done by empowered community based on and guided with decision reached by the whole community and law reinforcement. Is not based on individual voluntarism and option.

There is a strong trend towards spontaneous adoption of the Technology
Comments on adoption trend: As a result of benefit realization of the use of technology, there a growing acceptance and spontaneous adoption by the whole community

6.7 Points forts/ avantages/ possibilités de la Technologie

Points forts/ avantages/ possibilités du point de vue de l'exploitant des terres
The technology prevent degradation of the river bank and disappearance of palatable and nutritious pasture

Points forts/ avantages/ possibilités du point de vue du compilateur ou d'une autre personne ressource clé
Area enclosure complimented with reinforcement of bylaws reduce fire incidences and helps in sequestration of carbon both above and below the ground and reduce the effect of green gas emission.
Area enclosure and organized cut and carry feeding ensure availability of feed to animals kept in farm under zero grazing (e.g. dairy goats and cattle) and control unproductive loss of manure.
Area enclosure and organized cut and carry feeding ensure availability of mulching materials needed in production of banana and other crops.
Promote direct and indirect diversification of income sources to the rural poor.

6.8 Faiblesses/ inconvénients/ risques de la Technologie et moyens de les surmonter

Faiblesses/ inconvénients/ risques du point de vue de l’exploitant des terres	Comment peuvent-ils être surmontés?
Time consuming and labour heavy especially to environmental committee members.	Device motivation and incentive system at the grassroots.

Faiblesses/ inconvénients/ risques du point de vue du compilateur ou d'une autre personne ressource clé	Comment peuvent-ils être surmontés?
Emergency and dominance of invasive species	Liaise with research to find alternative and beneficial use of invasive species.
Needs committed people who can spend their valuable time in promotion of the technology.	Use SLM related incentives and promotion e.g. support with dairy goat to people who actively participate in promotion of the technology (as part of crop livestock integration) .
Takes time to inculcate self initiatives and ownership	Systematize and Operationalize into existing systems
Needs attitude and behavioral change (is not normal traditional for rural people to cultivate grass).	Encourage change of mindset by enabling farmers understanding of the principle behind pasture establishment.

7.1 Méthodes/ sources d'information