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

Nom du projet qui a facilité la documentation/ l'évaluation de la Technologie (si pertinent)

Preventing and Remediating degradation of soils in Europe through Land Care (EU-RECARE )

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

The Cyprus Institute (The Cyprus Institute) - Chypre

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

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) Questionnaires sur les Approches de GDT (documentées au moyen de WOCAT)

2.1 Courte description de la Technologie

Définition de la Technologie:

Dry-stone terraces built to create agricultural land, minimise soil erosion and retain soil moisture on steep mountain slopes.

2.2 Description détaillée de la Technologie

Description:

Dry-stone terraces consist of a series of nearly levelled platforms built along contour lines at suitable intervals. These structures characterise a large part of the landscape in Cyprus, and especially in communities around Troodos Mountains where large areas have been converted to agricultural terraces. The typical terraces found in the study-area are narrow (1-3 m) to medium-base (3-6 m) bench terraces, constructed by cutting and filling in slopes between 20-40%. The terraces are supported by walls, whereby stone is the only construction material without any binding mortar.

Terracing is one of the oldest means of cultivating slopes while saving soil and water. Due to the steep terrain of Troodos Mountains, the establishment of terraces acts as sediment trap storing the washed-off soil material within the slope. In general, terraces were created to stop or reduce the degrading effect of soil erosion by intercepting and controlling the surface run-off velocity and by facilitating its slower infiltration. In such a way, the sediment that accumulates behind the terraces has created suitable land for farming. In addition, the construction of dry-stone walls serves a dual purpose: to clear the land from large rock and stones, and to enhance the stability of the bench terraces against loss of top-soil. This is a type of technology that was very much used in the past and seen today as an important cultural landscape and heritage for these communities.

The construction of dry-stone walls was usually completed by the family who owned the field. Men undertook the building while the rest of the family carried the stones; assistance was also offered by relatives and friends of the family. First, the topography, the height and shape of the terrace is evaluated. Using a fuse, the craftsman shapes a straight line which would follow while building the wall. The foundations are created by excavating a pit of ~0.3-0.5 m, depending on the type of soils and the size of the wall; fuse, pick, mattock and shovel are the typical tools used. The pit is filled with large, irregular-shaped stones.

The stones are used in their natural shape for the construction of the walls without any processing. They are separated according to their shape, size and texture. The stones usually come from the cleaning of fields which will be cultivated or from a small-scale quarrying of the mountain slope using pick and lever. Large and irregular stones are used for the foundations, and the more regular ones for the construction of walls. The smaller stones are placed in between the large stones as the linchpin, to provide better stability to the structure.
The wall follows the land inclination and is laid over the foundation. Large stones are placed on the lower courses of the wall and on the exterior side. The stones are placed by hand one over the other, while smaller stones and rubbles are put between them in order to achieve more stability and better positioning; the stones cross both vertically and horizontally in order to avoid the creation of columns which will make the structure less stable. The wall is built lengthwise following the foundations and it reclines inwards; declination from the foundations does not exceed 5%. The back side of the wall is filled-up with more irregular stones which are not suitable to be placed on the front side. The filling connects the wall with the soil and stabilises the structure, and allows the drainage of water that is collected from the terrace and is discharged through the stones of the wall.

Terrace farming of grapes, nut and fruit trees, along with natural (mainly sclerophylous) vegetation constitute the predominant land uses in this area. The total population in the eight mountain communities of Peristerona Watershed has decreased by more than 50% over the past 30 years. The depopulation of mountain communities is associated with the urbanisation trends and the high farming costs which led to the gradual reduction of agricultural activities in the area. These socio-economic attributes form the main constraining factors for soil conservation. Thus, although terraces have a particularly beneficial effect in maintaining the productive capacity of soils in these communities, the significant changes in the socio-economic structure of the agricultural population over the last decades and the high maintenance and labour required, has led farmers to gradually abandon terrace farming. Consequently, many of the mountain terraces are no longer cultivated and dry stone walls are not maintained, causing sometimes a domino effect of collapsing terraces.

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 plus de 50 ans (technologie traditionnelle)

2.7 Introduction de la Technologie

Spécifiez comment la Technologie a été introduite: :

• dans le cadre d'un système traditionnel (> 50 ans)

Commentaires (type de projet, etc.) :

Dry-stone terracing has been practice for centuries in Cyprus and in the study area. The rehabilitation of dry-stone terraces through community-based activities has been introduced in 2015 by the RECARE project case-study team and the local communities.

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

• réduire, prévenir, restaurer les terres dégradées

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 by water from degraded and collapsing dry-stone terraces.
Loss of productive capacity.
Major land use problems (land users’ perception): Gradual collapse of dry-stone walls.
Root rot and yield failure as a result of water-logging which is linked to poor drainage in terraced fields.

3.4 Approvisionnement en eau

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

• pluvial

3.5 Groupe de GDT auquel appartient la Technologie

• mesures en travers de la pente

3.6 Mesures de GDT constituant la Technologie

Commentaires:

Main measures: structural measures

3.7 Principaux types de dégradation des terres traités par la Technologie

Commentaires:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion
Secondary types of degradation addressed: Wo: offsite degradation effects
Main causes of degradation: other human induced causes (specify) (Gradual abandonment of mountain agriculture), other natural causes (avalanches, volcanic eruptions, mud flows, highly susceptible natural resources, extreme topography, etc.) specify (Steep mountain terrain)
Secondary causes of degradation: land tenure (Small, fractured agricultural plots), governance / institutional (Lack of institutions for terrace maintenance)

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:

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

4.1 Dessin technique de la Technologie

4.2 Informations générales sur le calcul des intrants et des coûts

autre/ monnaie nationale (précisez):

Euro

Indiquez le taux de change des USD en devise locale, le cas échéant (p.ex. 1 USD = 79.9 réal brésilien): 1 USD = :

0,88

4.3 Activités de mise en place/ d'établissement

	Activité	Calendrier des activités (saisonnier)
1.	Land leveling and foundation	Early autumn or late spring
2.	Collection and transfer of stones	Early autumn or late spring
3.	Construction of stone-wall	Early autumn or late spring

4.4 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	Labour		4000,0	45,6	182400,0	100,0
Coût total de mise en place de la Technologie					182400,0
Coût total de mise en place de la Technologie en dollars américains (USD)					207272,73

Commentaires:

Duration of establishment phase: 83 month(s)

4.5 Activités d'entretien/ récurrentes

	Activité	Calendrier/ fréquence
1.	Repairing collapsed walls	Early autumn (before onset of rains), only on collapsed walls

4.6 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	Labour		200,0	9,12	1824,0	100,0
Coût total d'entretien de la Technologie					1824,0
Coût total d'entretien de la Technologie en dollars américains (USD)					2072,73

Commentaires:

Machinery/ tools: Wedge, hammer, pick, hoe and bucket are the typical tools used for by stone builders for the construction and maintenance of dry-stone terraces.
The costs estimates are averages and were calculated for the length of terrace structures, i.e. per running meter of terrace walls. The average height of dry-stone walls is 1.5 meter and it takes approximately 5 hours/meter for a builder to fully construct it. This includes 1 hour/meter for land levelling and foundation, 1 hour/meter for the collection and transfer of the necessary stones and 3 hours/meter for building the wall. Stones are abundant in the area; builders do not charge for the stones but for the time required to collect and transfer. Also, each builder has its own tools (i.e. wedge, hammer, pick, hoe and bucket). Terrace builders charge 8 €/hour (or 9.12 $/hour). On average, there are approximately 4000 running meters of terrace walls per hectare. The above information is used to convert the construction cost per hectare.
Maintenance activities include reconstruction of the terrace walls, only in case of collapsing. The reconstruction takes 1 hour/meter. For the annual maintenance estimates, it is assumed that 200 out of 4000 meters of terrace walls per hectare (or 5%) will require maintenance. In other words, a newly constructed wall will be maintained once every 20 years, on average.

4.7 Facteurs les plus importants affectant les coûts

Décrivez les facteurs les plus importants affectant les coûts :

The principal input cost for the construction and maintenance of terraces is manual labour. There are only few dry-stone builders in the area.

5.1 Climat

5.2 Topographie

Indiquez si la Technologie est spécifiquement appliquée dans des:

• non pertinent

5.3 Sols

5.4 Disponibilité et qualité de l'eau

5.5 Biodiversité

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: 10-50 persons/km2
Annual population growth: negative; 4%
100% of the land users are average wealthy.
Off-farm income specification: Farming is a part-time activity for most land users in the area.

5.7 Superficie moyenne des terres utilisées par les exploitants des terres appliquant la Technologie

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

Propriété foncière:

• individu, avec titre de propriété

Droits d’utilisation des terres:

• individuel

Commentaires:

Agricultural land is privately owned

5.9 Accès aux services et aux infrastructures

6.1 Impacts sur site que la Technologie a montrés

Impacts socio-économiques

Production

Disponibilité et qualité de l'eau

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

Autres impacts écologiques

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	Augmentation ou diminution	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 bien
tempête de vent locale	pas connu

Catastrophes climatiques

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

Catastrophes hydrologiques

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

Autres conséquences liées au climat

Autres conséquences liées au climat

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

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)?

6.5 Adoption de la Technologie

• > 50%

Si disponible, quantifiez (nombre de ménages et/ou superficie couverte):

90% of the land user families and 8% of the stated area

De tous ceux qui ont adopté la Technologie, combien d'entre eux l'ont fait spontanément, à savoir sans recevoir aucune incitation matérielle, ou aucune rémunération? :

• 11-50%

Commentaires:

10% of land user families have adopted the Technology without any external material support
90% of land user families have adopted the Technology with external material support
Comments on acceptance with external material support: The majority of existing terraces in the area were subsidized.
There is a little trend towards spontaneous adoption of the Technology
Comments on adoption trend: There are very few farmers that maintain existing terraces or construct new ones.

6.7 Points forts/ avantages/ possibilités de la Technologie

Points forts/ avantages/ possibilités du point de vue du compilateur ou d'une autre personne ressource clé
Indigenous technology of great agro-ecological value, adapted to local conditions.
Soil maintained on steep mountain slopes, thus reducing soil loss due to water erosion.
Terraces maintain the productive capacity of soils on steep slopes.
Water retention and longer storage of soil moisture, thus improving water use efficiency.
Terraces are part of cultural landscapes and heritage

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

Faiblesses/ inconvénients/ risques du point de vue du compilateur ou d'une autre personne ressource clé	Comment peuvent-ils être surmontés?
Maintenance of dry-stone wall terraces is costly and labour intensive.	Promote community-based terrace maintenance and utilise available community/subsidy funds for small cash compensation to terrace experts.
Terrace maintenance requires expert knowledge.	Motivate the younger generation to engage in part-time terrace farming.
Aging of the dry-stone experts.	Train young land users/owners on dry-stone terracing.
Technology does not lend itself to mechanisation.	Not possible to overcome.

7.1 Méthodes/ sources d'information

7.2 Références des publications disponibles

Titre, auteur, année, ISBN:

FAO, 2000. Manual on integrated soil management and conservation practices. FAO Land and Water Bulletin 8, Rome, Italy: 230 pp.TPH, 2007. Dry stone constructions of Cyprus. PIO, Nicosia.