1.2 Detalles de contacto de las personas de referencia e instituciones involucradas en la evaluación y la documentación de la Tecnología

1.3 Condiciones referidas al uso de datos documentados mediante WOCAT

¿Cuándo se compilaron los datos (en el campo)?

22/02/2013

El compilador y la/s persona(s) de referencia claves aceptan las condiciones acerca del uso de los datos documentados mediante WOCAT:

Sí

2.1 Breve descripción de la Tecnología

Definición de la Tecnología:

Belts of shrub or grass, planted on the level bund which constructed along contour line in gentle slope farmland in the black soil region of Northeast China.

2.2 Descripción detallada de la Tecnología

Descripción:

Shrubbery buffer strip with bund(SBSWB) is a traditional technology, it is introduced by the field staff about 60 years ago who worked in the farm in Heilongjiang province.This technology with low-cost, high effectives and easy to construct, which has been widely applied in all black soil region of Northeast China (Heilongjiang,Jilin,Liaoning,North of Inner Mongolia Autonomous Region).

Purpose of the Technology: The final purpose of these buffer strips is increasing crop production by decreasing soil loss. More specific objectives include: 1)protect the land from surface erosion by cutting slope length, increase infiltration and soil moisture; 2)to prevent soil loss of gentle slope farmland by allowing excess runoff to filter through but trapping sediment; 3) through the effect of tillage and water erosion between the strips, level bund lead to the formation of forward slope terraces over time, then developing into terrace final;4) creation of opportunities for additional income by harvesting fodder(grass) production and fruits(shrub).

Establishment / maintenance activities and inputs: A construction is generally carried out in autumn of the year; plantation is made in spring of the next year. The construction in a man-machine integration mode is generally carried out step by step and from top to bottom along the contour line(s). The ladder-shaped cross section of a ridge is 0.3-0.5m in width (suitable width on the top), 0.5-0.6m in height, 1:1 or 1:0.5 in inner-side gradient and 1:0.5 in outer-side gradient.
In a construction, peel the surface soil with machine, with the peeling depth generally being 0.3m, which should be subject to soil layer depth; then haul the ridge construction plough (a kind of machine or device) with a tractor to build the ridges, consolidate the ridges through artificial slapping; Finally restore the surface soil to accomplish ridge construction. The tops of the constructed ridges should be maintained to be in a horizontal surface. The distance between two ridges in this region is generally stipulated to be 50 meters. The soil for ridge construction should be free from such sundries as gravels, tree roots and turfs.

Natural / human environment: Shrubbery buffer strip is found mainly in Northeast China, at altitudes between 700 and 1600 m. Climate there is cold in winters and cool in summers, with a monsoon moisture regime. In the area, the annual mean temperatures is from 2 to 8 °C, and the annual mean precipitation is from 500 to 1000 mm. Most of the farmland slopes are less than 7°but slope lengths mainly range from 200 to 1000m in this area.
Northeast China, the grain production base of China, or the bread basket of China, includes three provinces (Hei-long-jiang, Ji-lin, and Liao-ning) and the eastern part of the Inner Mongolian autonomous region. In 2009, 17.1% the China’s total grain production came from this region, which included 33.5%, 55.7% and 9.6% of corn, soybean, and rice, respectively. Approximately 118 million people live in this region. Grain produced per capita is over 1000 kg annually.

2.3 Fotografías de la Tecnología

2.5 País/ región/ lugares donde la Tecnología fue aplicada y que se hallan comprendidos por esta evaluación

2.6 Fecha de la implementación

Si no se conoce el año preciso, indique la fecha aproximada:

• hace más de 50 años atrás (tradicional)

2.7 Introducción de la Tecnología

Especifique cómo se introdujo la Tecnología:

• como parte de un sistema tradicional (> 50 años)

Comentarios (tipo de proyecto, etc.):

SBSWB appear in the vicinity of Heilongjiang province in the last century 60's

3.2 Tipo(s) actuales de uso de la tierra donde se aplica la Tecnología

Comentarios:

Major land use problems (compiler’s opinion): Beacuse of long slope, high rainfall intensity, freezing and thawing processes, and intensive cultivation has lead to substantial water runoff, soil erosion, and gully formation. Soil erosion has been the serious problem threatening agriculture sustainability in the region for decades.The flora of the area are very diverse.

Major land use problems (land users’ perception): Soil fertility and crop yeild are decreasing year by year.

3.3 Información adicional sobre el uso de tierras

Provisión de agua para la tierra donde se aplica la Tecnología:

• de secano

Comentarios:

Water supply also mixed rainfed - irrigated

Número de temporadas de cultivo por año:

• 1

Especifique:

Longest growing period in days: 150Longest growing period from month to month: April to August

3.4 Grupo MST al que pertenece la Tecnología

• medida de pendiente transversal

3.5 Difusión de la Tecnología

Especifique la difusión de la Tecnología:

• distribuida parejamente sobre un área

Si la tecnología se halla difundida homogéneamente en un área, indique el área aproximada que cubre:

• > 10,000 km2

Comentarios:

This technique has been common applied in gentle slope farmland of the black soil region of Northeast China. It is very useful for reduce soil loss and intercept runoff.

3.6 Medidas MST que componen la Tecnología

Comentarios:

Main measures: vegetative measures, structural measures

Type of vegetative measures: aligned: -contour

3.7 Principales tipos de degradación del suelo encarados con la Tecnología

Comentarios:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion

Secondary types of degradation addressed: Wo: offsite degradation effects, Et: loss of topsoil

Main causes of degradation: soil management (The extensive cultivation and management modes reduce the thickness of black soil layer by 0.5 cm per year.), population pressure (Great population pressure makes the land carrying capacity decline year by year.), education, access to knowledge and support services (The channels for the local peasants with low levels of education to learn knowledge are few, and they will not take initiative to learn knowledge.)

Secondary causes of degradation: over-exploitation of vegetation for domestic use (This area is the most important grain production area in China, there is serious excessive exploitation in this area.), change of seasonal rainfall (The rainy seasons mainly focus on July and August.), Heavy / extreme rainfall (intensity/amounts) (The downpours in summer bring about soil loss.), land tenure (As the lands are owned by country or by peasant communities, the peasants are not strongly aware of the importance of land protection.), poverty / wealth (The serious gap between rich and poor)

3.8 Prevención, reducción o restauración de la degradación del suelo

Especifique la meta de la Tecnología con relación a la degradación de la tierra:

• prevenir la degradación del suelo
• reducir la degradación del suelo

Comentarios:

Main goals: mitigation / reduction of land degradation

Secondary goals: prevention of land degradation

4.1 Dibujo técnico de la Tecnología

4.2 Especificaciones técnicas/ explicaciones del dibujo técnico

The upper-base width, lower base width, height, slope ratio and spacing of a ridge are 0.5m, 1m, 0.5m, 1:0.5 and 40-60m respectively. A row spacing of the shrubs planted on the ridges should be 0.5m. Generally one row on each ridge is enough. About 80 shrubs are needed for every hectare; if herbaceous plants are planted, no special plantations are required.

Location: Chao Yang City. Liao Ning Province

Date: Nov 12,2012

Technical knowledge required for field staff / advisors: moderate (Field staff/agricultural advisor should have intermediate know-how level, because land user should be instructed by them)

Technical knowledge required for land users: low (The knowledge level of lander user is not required to be high, who just need(s) to follow the instructions from field staff/agricultural advisor)

Main technical functions: control of dispersed runoff: retain / trap, control of dispersed runoff: impede / retard, reduction of slope length, improvement of water quality, buffering / filtering water, sediment retention / trapping, sediment harvesting

Secondary technical functions: control of concentrated runoff: retain / trap, control of concentrated runoff: impede / retard, improvement of ground cover, improvement of topsoil structure (compaction), increase in organic matter, increase in nutrient availability (supply, recycling,…), increase of infiltration, increase / maintain water stored in soil, water harvesting / increase water supply, water spreading, increase of biomass (quantity), promotion of vegetation species and varieties (quality, eg palatable fodder), spatial arrangement and diversification of land use

Aligned: -contour
Vegetative material: F : fruit trees / shrubs
Number of plants per (ha): 200-600
Vertical interval between rows / strips / blocks (m): 5.644-8.466
Spacing between rows / strips / blocks (m): 40-60
Vertical interval within rows / strips / blocks (m): 0.5
Width within rows / strips / blocks (m): 0.5

Fruit trees / shrubs species: caragana, lespedeza, amorpha, daylily, Melilotus

Slope (which determines the spacing indicated above): 5-8%

Gradient along the rows / strips: 0%

Wall/ barrier
Vertical interval between structures (m): 2.09-5.55
Spacing between structures (m): 40-60
Height of bunds/banks/others (m): 0.3-0.5
Width of bunds/banks/others (m): 0.5-1
Length of bunds/banks/others (m): >100

Construction material (earth): The soil should be free from such sundries as gravels, tree roots and turfs.

Slope (which determines the spacing indicated above): 5-8%

Lateral gradient along the structure: 0%

4.3 Información general sobre el cálculo de insumos y costos

otra / moneda nacional (especifique):

RMB

Indique la tasa de cambio de USD a la moneda local (si fuese relevante): 1 USD =:

6,25

4.4 Actividades de establecimiento

	Actividad	Tipo de medida	Momento
1.	Plant shrubbery	Vegetativas	autumn
2.	Layout of contour and the line of SBSWB with the leveling	Estructurales	autumn
3.	Build the ridge	Estructurales	autumn

4.5 Costos e insumos necesarios para el establecimiento

	Especifique insumo	Unidad	Cantidad	Costos por unidad	Costos totales por insumo	% de los costos cubiertos por los usuarios de las tierras
Mano de obra	Layout of contour	Person/day	3,0	16,0	48,0
Mano de obra	Build ridge	Person/day	36,0	9,6	345,6
Equipo	Machine use	hours/day	1,0	80,0	80,0
Equipo	tools	day	1,0	8,0	8,0
Material para plantas	Seedling Plant shrubbery	ha	600,0	0,016	9,6
Costos totales para establecer la Tecnología					491,2

Comentarios:

Duration of establishment phase: 1 month(s)

4.6 Actividades de establecimiento/ recurrentes

	Actividad	Tipo de medida	Momento/ frequencia
1.	The farmers will actively protect the Bund in their land. Don't need money.	Vegetativas	autumn
2.	The farmers will actively protect the Bund in their land. Don't need money.	Estructurales	autumn

4.7 Costos e insumos necesarios para actividades de mantenimiento/ recurrentes (por año)

Comentarios:

Machinery/ tools: Spade, Spade

3 people are required to layout contour, daily labor cost for per person is 100 Yuan, so the total labor cost is 300Yuan ($48), tools fee is 50Yuan ($8).
One tractor can built 2.6 ha of ridges per day at a cost of 500 Yuan ($80). The ridges constructed should be artificially tamped, 120 people are needed to tamp the ridges in an area of 2.6ha, about 46 people for each hectare. As the daily labor cost for per person is 60 Yuan, the total expense on each hectare is 2760 Yuan($441.6), and the labor intensity is intermediate.
If shrubs are planted on the ridges, 400 shrubs are required for each 1 hectare management area. In addition, as the price of caragana microphylla in 2012 is 0.1 Yuan per one, the total cost of the caragana microphyllas per hectare should be 40Yuan($6.4).
Therefore, the total construction cost per hectare is 3650Yuan($584).

4.8 Factores más determinantes que afectan los costos:

Describa los factores más determinantes que afectan los costos:

The most determinate fators affecting the cost is labour

5.1 Clima

5.2 Topografía

5.3 Suelos

Si se halla disponible, adjunte una descripción completa de los suelos o especifique la información disponible, por ej., tipo de suelo, pH/ acidez de suelo, capacidad de intercambio catiónico, nitrógeno, salinidad, etc. :

Soil fertility: high

Soil drainage / infiltration: good

Soil water storage capacity: low - medium

5.4 Disponibilidad y calidad de agua

5.5 Biodiversidad

5.6 Las características de los usuarios de la tierra que aplican la Tecnología

Indique otras características relevantes de los usuarios de las tierras:

Land users applying the Technology are mainly common / average land users

Population density: 50-100 persons/km2

Annual population growth: < 0.5%

5% of the land users are very rich.
45% of the land users are rich.
35% of the land users are average wealthy.
15% of the land users are poor.
5% of the land users are poor.

5.7 Área promedio de la tierra que pertenece a o es arrendada por usuarios de tierra que aplican la Tecnología

5.8 Tenencia de tierra, uso de tierra y derechos de uso de agua

Tenencia de tierra:

• comunitaria/ aldea

Derechos de uso de tierra:

• individual

Derechos de uso de agua:

• comunitarios (organizado)

5.9 Acceso a servicios e infraestructura

6.1 Impactos in situ demostrados por la Tecnología

Impactos socioeconómicos

Producción

Disponibilidad y calidad de agua

Ingreso y costos

Impactos socioculturales

Impactos ecológicos

Ciclo de agua/ escurrimiento de sedimento

Suelo

Biodiversidad: vegetación, animales

Reducción de riesgos de desastres y riesgos climáticos

6.2 Impactos fuera del sitio demostrados por la Tecnología

6.3 Exposición y sensibilidad de la Tecnología al cambio climático gradual y a extremos relacionados al clima/ desastres (desde la percepción de los usuarios de tierras)

Cambio climático gradual

Cambio climático gradual

	Estación	tipo de cambios climáticos/ climas extremos	¿Cómo es que la tecnología soporta esto?
temperatura anual		incrementó	bien

Extremos (desastres) relacionados al clima

Desastres climatológicos:

	¿Cómo es que la tecnología soporta esto?
tormenta de lluvia local	bien
tormenta de viento	bien

Desastres climatológicos

	¿Cómo es que la tecnología soporta esto?
sequía	bien

Desastres hidrológicos

	¿Cómo es que la tecnología soporta esto?
inundación general (río)	bien

Otras consecuencias relacionadas al clima

Otras consecuencias relacionadas al clima

	¿Cómo es que la tecnología soporta esto?
periodo reducido de crecimiento	bien

6.4 Análisis costo-beneficio

¿Cómo se comparan los beneficios con los costos de establecimiento (desde la perspectiva de los usuarios de tierra)?

¿Cómo se comparan los beneficios con los costos de mantenimiento/ recurrentes (desde la perspectiva de los usuarios de tierra)?

Comentarios:

Although Certain quantity of land will be occupied and grain output will be affected in SBSWS during the early period of a construction, in the long run, SBSWS can prevent the loss of the most fertile surface soil, in addition, with the ever increased quantity of the sediment intercepted by SBSWS and as the heights of the vegetational belts increase year by year, the slope croplands will become bench terraces, and the grain output will be increased.

6.5 Adopción de la Tecnología

Si tiene la información disponible, cuantifique (número de hogares y/o área cubierta):

NA

Comentarios:

80% of land user families have adopted the Technology with external material support

Comments on acceptance with external material support: Large-area popularization of SBSWB has been achieved in the locality.

20% of land user families have adopted the Technology without any external material support

Comments on spontaneous adoption: The implementation of this measure was accomplished under the encouragement and support of the government. There are relatively few peasant households who initially take this measure. The main reason for the peasant reluctance to adopt this measure is that the ridges will occupy land and reduce arable area. They are unconscious of and do not care about soil loss, and unable to realize in the long run the harm brought about by soil loss.

There is a little trend towards spontaneous adoption of the Technology

Comments on adoption trend: The trend depands on government support

6.7 Fuerzas/ ventajas/ oportunidades de la Tecnología

Fuerzas/ ventajas/ oportunidades desde la perspectiva del usuario de la tierra
Convenient for construction How can they be sustained / enhanced? Popularization carried on

Fuerzas/ ventajas/ oportunidades desde la perspectiva del compilador o de otra persona de referencia clave
Gradual formation of the slope-type terraces, which can be developed into bench terraces many years later How can they be sustained / enhanced? Increase of ridge height year by year
Intercepting the sediments carried by runoffs, preventing water and soil loss of the arable lands on the gentle slopes How can they be sustained / enhanced? In combination with other water and soil conservation measures during operation, such as no-tillage and drainage ditches;
increase of infiltration How can they be sustained / enhanced? Chopping down branches at regular intervals to guarantee that the plants on the ridges will not enter into rivary with the crops over water and sunlight;

6.8 Debilidades/ desventajas/ riesgos de la Tecnología y formas de sobreponerse a ellos

Debilidades/ desventajas/ riesgos desde la perspectiva del usuario de la tierra	¿Cómo sobreponerse a ellas?
The ridges occupy land and reduce arable area	government support

Debilidades/ desventajas/ riesgos desde la perspectiva del compilador o de otra persona de referencia clave	¿Cómo sobreponerse a ellas?
Reduction of arable lands brings about low enthusiasm of the peasants	Conflict between the arable lands and the immediate interests of the peasants. Popularization of water and soil preservation knowledge should be strangthened to make the presants realize that although the immediate interests will be hurt, the long-term interests will increase.

7.2 Vínculos a las publicaciones disponibles

Título, autor, año, ISBN:

Title:Techniques standard for comprehensive control of soil erosion in the black soil region Author:Shen bo; Meng lingqinYears:2009

¿Dónde se halla disponible? ¿Costo?

internal materials