1.2 参与该技术评估和文件编制的资源人员和机构的联系方式

有助于对技术进行记录/评估的项目名称（如相关）

Catastrophic shifts in drylands (EU-CASCADE)

有助于对技术进行记录/评估的机构名称（如相关）

Centro de Estudios Ambientales del Mediterraneo (CEAM) - 西班牙

1.3 关于使用通过WOCAT记录的数据的条件

（现场）数据是什么时候汇编的？:

01/06/2013

编制者和关键资源人员接受有关使用通过WOCAT记录数据的条件。:

是

1.4 所述技术的可持续性声明

这里所描述的技术在土地退化方面是否存在问题，导致无法被认为是一种可持续的土地管理技术？:

否

2.1 技术简介

技术定义:

Post-fire afforestation with Pinus Halepensis to reduce soil erosion and to enhance forest growth.

2.2 技术的详细说明

说明:

As a consequence of the devastating fire of the year 1979 which destroyed 33’000 ha of forest, strong erosion processes occurred on the bare soil and hindered the vegetation to regrow. Furthermore, this region was already abandoned (rural exodus) and missing management practices increased the problem of erosion. Therefore the government mandated to afforest the burnt areas in 1985.

The main purpose of the afforestation was to reduce the soil erosion (which was severe at that time) by planting trees, which increases soil stability and enables forest growth again. But the state also wanted to ensure wood extraction in the future. Furthermore, the visual impact was an important driver for afforesting this area.

The afforestation was executed in the winter of 1985 (November-February/March) by the regional forest services (Conselleria de agricultura). Forest engineers, who worked for the state and planned the project, collaborated with forest agents whereas the involved forest agents contracted local villagers to help afforesting these areas. The forest agent acted as a link between engineer and forest brigade and controlled if the brigade executed what the engineer proposed. He also provided assistance to the workers. The forest brigade was paid by day-if it was raining, people did not work and did not get any salary.
Nobody could provide direct information on the afforestation process in 1985 but there are not many differences of how they did it in the past and how it works today. The planting holes (60cm x 60cm x 60cm) were created with a machine (Caterpillar) using a “spoon” to open a hole and cover it again. This process loosens the soil (only possible in soils which are free from big stones). It should be noted that they did not use a ripper, they knew that the soil is destroyed using this technique. The seedlings were planted manually by the forest workers and arranged linearly because this facilitated the handling of the machines. Since the soil had a low stone content, it was suitable for the establishment of a forest.
The afforested area covered around 100 ha (not continuously). Today, the costs of an afforestation are around 1500 Euro per ha, but in the past it was less expensive. They only planted Pinus Halepensis. Today, a seedling of this tree species costs between 20 and 60 Cents. If the regional forest services have their own nurseries, they do not need to spend money to buy seedlings.
The success of an afforestation depends on numerous factors such as aspect and humidity (better on north-facing slopes), soil amount/fertility (better conditions on former cultivated fields), origin of the seedlings (adapted to the local climatic conditions), variability/uncertainty of the weather conditions (e.g. droughts, freezing). Usually a plantation is done in October/November and therefore especially the first summer determines the success. If it is too dry the plant will not grow (roots are too short to reach the humidity deeper in the ground). Further, the availability of trained people and the selection of appropriate machines are crucial.
The documented afforestation is one of a few examples of afforestation trials which succeeded. Today there is a forest where young pines are growing naturally ("children" of the planted ones), but also resprouter species (e.g. Quercus) can be found, which regenerated without having been planted and apparently were dispersed by birds.
But there are also some problems related to this afforestation. The forest agent explained that there is a high pest risk since monoplantations are less resilient to diseases (sick or dead plants in turn increase the fire risk). Another problem is that the trees were planted too densely (800-1000 plants per ha with a spacing of 5-10m) which requires recurrent management of the forest. Knowing about this problem, around the year 2003 they managed the area doing a selective clearing to reduce both the continuity and the competition between the species and thus also reduced the fire risk (“ayuda regeneración”). But the forest has become extremely dense again, thus increasing the risk of fires. There is a need to manage this area again and to extract biomass (selective clearing), but unfortunately no management project is planned for the near future.

The region of Ayora is mountainous with a dry subhumid climate (~380 mm annual rainfall). The risk of fire incidence is at its highest from June to September when there are adverse conditions like drought, high temperatures and strong winds (mainly the winds coming from central Spain, called “poniente”).
The population density is very low and there are only few job opportunities (e.g. marginal agriculture, grazing, hunting, beekeeping). The plantation provided jobs for rural people. Also today forest management could be a source for jobs.

2.3 技术照片

2.5 已应用该技术的、本评估所涵盖的国家/地区/地点

2.6 实施日期

如果不知道确切的年份，请说明大概的日期:

• 10-50年前

2.7 技术介绍

详细说明该技术是如何引入的:

• 通过项目/外部干预

注释（项目类型等）:

The project was designed by the regional forest services of Valencia in 1985 (“Conselleria de agricultura” at that time, today it is called “Conselleria de infraestructura, territorio y medio ambiente”).

3.1 该技术的主要目的

• 减少、预防、恢复土地退化
• 保护生态系统

3.2 应用该技术的当前土地利用类型

注释:

Major land use problems (compiler’s opinion): The past land use resulted in a change of the vegetation composition (e.g. through removal of resprouter species). Due to rural exodus and land abandonment, the natural succession took place and fire-prone early-successional species colonized the abandoned fields. The vegetation grew without any control which seems to have caused the devastating fire of the year 1979 which destroyed 33’000 ha of forest. As a consequence of this fire, strong erosion processes occurred on the bare soil and hindered the vegetation to regrow. Furthermore, people which still lived there lost their properties after the fire and moved away as well. A consequence of the depopulation was a lack of management practices which increased the problem of post-fire erosion.

3.3 有关土地利用的更多信息

每年的生长季节数:

• 1

3.4 该技术所属的SLM组

• 森林种植管理

3.5 技术传播

具体说明该技术的分布:

• 均匀地分布在一个区域

如果该技术均匀地分布在一个区域上，请注明覆盖的大致区域。:

• 0.1-1 平方千米

注释:

Total area covered by the SLM Technology is 1 m2.
There are different afforestation patches which are not connected, but they were all done in this region and account for 100 ha.

3.6 包含该技术的可持续土地管理措施

注释:

Type of vegetative measures: aligned: -linear

3.7 该技术强调的主要土地退化类型

注释:

Main causes of degradation: deforestation / removal of natural vegetation (incl. forest fires) (Deforestation in the past (removal of resprouter species), land abandonment, uncontrolled growth of fire-prone vegetation, afforestations. The fire of 1979 destroyed 33'000 ha of forest.), population pressure (Vast areas were deforested in the past for agriculture, important key species were removed. After land abandonment there was a lack of management strategies), land tenure (After the fire, many people lost their properties and had to move away, therefore no management for post-fire erosion was applied.), labour availability (In the past there was outmigration from the region to the big cities and therefore there was a lack of management before and after the fire.), inputs and infrastructure: (roads, markets, distribution of water points, other, …) (The huge fire of 1979 could not be stopped easily because of the lack of fire extinction media like water ponds, streets, transport media (this has been improved now))

3.8 防止、减少或恢复土地退化

具体数量名该技术与土地退化有关的目标:

• 防止土地退化
• 修复/恢复严重退化的土地

4.1 该技术的技术图纸

4.2 技术规范/技术图纸说明

The Pinus Halepensis seedlings were planted on a line in order to facilitate the operation of machines. The linear arrangement is still visible when observing the plantation from the distance, but when finding oneself within the forest this alignment is not visible anymore since the forest grew very densely. A part of today's forest grew naturally after planting the trees - some young pines but also some resprouters (e.g. Quercus) can be found which is pleasant and shows the success of this plantation effort. However, it would have been better to plant less trees with a bigger distance between the individuals.
To reduce the high density and continuity of the forest (and thus to reduce the fire risk) a selective clearing would be required but currently the state does not invest money in forest management practices. Without extraction of biomass this dense forest contains a high risk of fire.
Location: Ayora. Valencia, Spain
Date: 11-12-2013

Technical knowledge required for field staff / advisors: high (The forest agent needs a high technical knowledge. He acts as a link between engineer and forest brigade and controls if the brigade executes what the engineer dictates. He also provides assistance.)
Technical knowledge required for Engineer: high (The forest engineer works for the state and plans the project, therefore he needs a high technical knowledge)
Technical knowledge required for Forest brigade/workers: low (The forest workers only execute what the engineer and the forest agent tell them. They need to know how to handle the machines but don’t have to judge where to plant which species.)

Main technical functions: control of raindrop splash, control of dispersed runoff: retain / trap, control of dispersed runoff: impede / retard, control of concentrated runoff: retain / trap, control of concentrated runoff: impede / retard, improvement of ground cover, stabilisation of soil (eg by tree roots against land slides), sediment retention / trapping, sediment harvesting, increase of biomass (quantity)
Secondary technical functions: increase of surface roughness, increase in organic matter, increase in nutrient availability (supply, recycling,…), increase of infiltration, promotion of vegetation species and varieties (quality, eg palatable fodder)

Aligned: -linear
Vegetative material: T : trees / shrubs
Number of plants per (ha): 800-1000
Vertical interval within rows / strips / blocks (m): 5-10
Trees/ shrubs species: Pinus Halepensis

4.3 有关投入和成本计算的一般信息

其它/国家货币（具体说明）:

Euro

注明美元与当地货币的汇率(如相关):1美元=:

0.74

4.4 技术建立活动

	活动	措施类型	时间
1.	Digging holes (60cm x 60cm x 60cm)	植物性的	Once (1985), between November and February/March
2.	Plantation of the seedlings (pinus halepensis)	植物性的	Once (1985), between November and February/March

4.5 技术建立所需要的费用和投入

	对投入进行具体说明	单位	数量	单位成本	每项投入的总成本	土地使用者承担的成本%
设备	machine use	ha	1.0	4857.0	4857.0
技术建立所需总成本					4857.0

注释:

Duration of establishment phase: 4 month(s)

4.6 维护/经常性活动

	活动	措施类型	时间/频率
1.	Selective clearing "ayuda regeneración" (only done once in 2003 but should be done again to decrease the risk of fires and competition between species)	植物性的	late spring 2003

4.7 维护/经常性活动所需要的费用和投入（每年）

	对投入进行具体说明	单位	数量	单位成本	每项投入的总成本	土地使用者承担的成本%
设备	machine use	ha	1.0	2428.0	2428.0
技术维护所需总成本					2428.0

注释:

The costs were calculated for the application of the technology on one hectare. Furthermore, the total costs of the afforestation were calculated with today’s costs because the costs at the time it was implemented are not known.
The currency rate (Euro-Dollar) was calculated on November 16th, 2013.

4.8 影响成本的最重要因素

描述影响成本的最决定性因素:

The costs of a plantation can be affected by numerous factors, such as slope (if the slope is steep, the work is much more difficult and takes more time, also because machines cannot be used on steep slopes), distance from a street (people can work less in a day if they have to walk far to plant), stone content of the soil (if there are many stones the work is much more difficult for the machines), soil type (plantations work much better on previous cropland because the soil is more fertile), origin of the seedlings (adapted to the local climatic conditions), variability/uncertainty of the weather conditions (e.g. droughts, freezing). If there are adverse climatic conditions or other negative circumstances the afforestation will not work well and this might cause higher costs.

5.1 气候

5.2 地形

5.3 土壤

5.4 水资源可用性和质量

5.5 生物多样性

5.6 应用该技术的土地使用者的特征

说明土地使用者的其他有关特征:

Land users applying the Technology are mainly common / average land users
Difference in the involvement of women and men: The work was mainly done by men, because it is heavy work and it is not usual that women are working in the forest.
Population density: < 10 persons/km2
Annual population growth: negative

5.8 土地所有权、土地使用权和水使用权

土地所有权:

• 州
• 个人，有命名

土地使用权:

• 个人

• public/open access but organised (e.g. hunting)

• public/open access but organised (e.g. hunting)

注释:

In the region, there is some public land, controlled by the state. But there is also some private land. The access to the public land is open but organized. Permission is needed from the government to cut trees, to build a house or to hunt. There are some private hunting areas for which the hunting association has to pay a fee.

6.1 该技术的现场影响

社会经济效应

生产

社会文化影响

生态影响

水循环/径流

土壤

生物多样性:植被、动物

减少气候和灾害风险

6.2 该技术的场外影响已经显现

6.3 技术对渐变气候以及与气候相关的极端情况/灾害的暴露和敏感性（土地使用者认为的极端情况/灾害）

渐变气候

渐变气候

	季节	气候变化/极端天气的类型	该技术是如何应对的？
年温度		增加	好

气候有关的极端情况（灾害）

气象灾害

	该技术是如何应对的？
局地暴雨	好
局地风暴	未知

气候灾害

	该技术是如何应对的？
干旱	不好

水文灾害

	该技术是如何应对的？
比较和缓的（河道）洪水	未知

其他气候相关的后果

其他气候相关的后果

	该技术是如何应对的？
缩短生长期	不好
fires	不好

注释:

The technology was not modified but it is important to add some notes to the above stated reactions to climatic extremes. If the temperature is decreasing to -15°C the pines are sensitive because they freeze. But they are tolerant against temperature increase always when there is water available (Pinus Hal. is more tolerant to temperature increase than Pinus Pinaster). Afforestations are more sensitive to droughts than natural forests because the afforested trees are not used to these hard conditions. If the pines are mature, they are more tolerant than young pines because their roots are longer and reach deeper into the ground. If there is a drought when pines are still young it can increase the risk of a fire. The pines are also sensitive to hail and snow.

6.4 成本效益分析

技术收益与技术建立成本相比如何（从土地使用者的角度看）？

技术收益与技术维护成本/经常性成本相比如何（从土地使用者的角度看）？

注释:

Short-term returns are negative because the management practice is expensive and until the trees reach a mature state, there are not many returns (in terms of wood and biomass). In the long-term this management practice shows a positive result because compared to bare soil or shrubland it has ecological benefits such as the reduction of soil erosion, and it also provides wood and biomass which could be extracted. Currently there is no management project because the state does not invest money but it would actually be required in order to maintain the healthy state of this forest patch and to control the fire risk. If there is money invested by the state they can do a selective clearing which will result in short-term returns, e.g. wood (but also in the long-term they will be able to extract wood).

6.5 技术采用

注释:

There is no trend towards spontaneous adoption of the Technology
In Spain a lot of afforestation trials have been realized in the past but only a few of them succeeded.

6.7 该技术的优点/长处/机会

土地使用者眼中的长处/优势/机会
There are also economic benefits for local people. The afforestation provided jobs for rural people. Furthermore, Pinus Halepensis seedlings grow faster and show a higher survival rate than other species, therefore the natural process of forest growth is increased which in turn results in the possibility to use the forest after some years again, e.g. extraction of wood/biomass for bioenergy or timber. But unfortunately this is not done frequently because it is expensive to clear the forest (located in a remote area).
Many stakeholders mentioned the positive visual impact. They prefer to have a forest instead of bare soil or shrubland, and it reminds them of how the state of the forest was before the fire. Trees have a higher value for them than shrubs. They supported the fact that the afforestation helped the environment to regenerate.
Compared to the situation after the fire there is a higher biodiversity due to the afforestation.
The afforestation contributed to rural development

编制者或其他关键资源人员认为的长处/优势/机会
The afforestation allowed the rehabilitation of an area affected by a devastating wildfire. It is an example out of many afforestation trials which succeeded. The success of this Pinus Halepensis afforestation is not only shown by the occurrence of healthy old pines, but also by the growth of young pines and resprouter species such as Quercus which were not planted.
Through the plantation of pines, the soil cover and stability was improved which in turn led to a decrease of soil erosion. The reduction in soil erosion (less transported sediments) also resulted in a decrease of damages of the infrastructure (such as streets or water ponds for fire extinction).

6.8 技术的弱点/缺点/风险及其克服方法

土地使用者认为的弱点/缺点/风险	如何克服它们？
The area which was afforested is now not available anymore for agriculture. There is therefore a loss of agricultural land, but it is not sure either whether there would be a farmer using this land since it is located in a remote area.	Local hunters are cultivating cereals next to the forest to attract the animals. This is also important for the animals because without these fields, they would probably have to leave this area due to the scarce fodder supply
The area is now less accessible for hunters because of the density of the forest which allows animals to hide themselves	In the opinion of the villagers it would be important to promote the relationship between humans and nature and to find a balance between forest use and natural processes. The consciousness of the patrimonial value of the forest should also be promoted.
Some stakeholders criticized the linear planting. This is not like nature “would do it”.
There are many stakeholder who said that it was an error to do so many afforestations with Pinus Halepensis because in many regions nature would have regenerated by itself. It would have been possible to save a lot of money. A plantation causes high costs.
Due to the lack of management and because there is almost no use of the forest by the local population, there is a high amount of shrubs which increases the fire risk and hinders from walking through the forest

编制者或其他关键资源人员认为的弱点/缺点/风险	如何克服它们？
It would be necessary to extract biomass from the forest to decrease the continuity of the trees and shrubs. Due to the lack of forest management (the management activities are expensive and labour-intensive) there is an increased risk of fires.	More investments in forest management such as selective forest clearings are required. Managing the forest would not only decrease the risk of fire and the competition between the species but also generate benefits such as timber or biomass for bioenergy production. Furthermore, jobs would be generated. In general, after afforestations, it would be required that people manage the forest. Nowadays, there is only limited use of the forest – in the past people lived of the land, but today this is not the case anymore. E.g. grazing is almost not existing anymore but in fact this would be really important for the reduction of the fire risk.
It is not fully clear whether Pinus Halepensis plantations are a useful tool for restoration and it is also questioned whether it is sustainable to plant only Pinus Halepensis. Monoplantations result in the simplification of the landscape and alterations of habitats. One of the reasons why they used this species is that planting pines is kind of a tradition: it was always used for economic purposes because in earlier times the wood had a higher value. Furthermore, Pinus Halepensis seedlings grow faster and show a higher survival rate than other species, and since the aim of the afforestations was to have forest again in a short period of time, this species seemed to be the most suitable. But often in Pinus Halepensis Monoplantations other species do not grow (which is not the case in the documented afforestation).	Research carried out on this topic showed that it would be good to increase the diversity (e.g. with carrasca, sabina, enebros, madroños), to combine the plantation of pines with the plantation of broad-leaved resprouting species (such as holm oak), in order to take advantage of both the fast-growth features of pines and the high resilience of oaks. This also provides higher diversity and landscape heterogeneity
Monoplantations are more vulnerable to perturbations such as forest fires or pests. If there is a high amount of one specific species the spread of a pest is facilitated. Sick or dead trees in turn increase the fire risk.	It would be good to increase the diversity (e.g. with carrasca, sabina, enebros, madroños), to combine the plantation of pines with the plantation of broad-leaved resprouting species (such as holm oak), in order to take advantage of both the fast-growth features of pines and the high resilience of oaks.
Additional information: The here documented afforestation was successful, but usually many plantations of Pinus Halepensis failed (low seedling survival rate)	Seedling survival can in some cases (has also be questioned) be enhanced through preconditioning, water harvesting techniques (micro-catchments), tree-shelters (protective tubes), fertilisation, application of mulch, using facilitating effects (planting close to a resource island or a nurse plant, to benefit from shade, change in soil properties, retention of soil and nutrients, protection from grazers), perch effect (providing bird perches e.g. dead trees, artificial woody structures, in old fields to accelerate colonisation rates (bird-mediated restoration))

7.1 信息的方法/来源

7.2 参考可用出版物

标题、作者、年份、ISBN:

Fernández-Ondoño, E., Rojo Serrano, L., Jiménez, M. N., Navarro, F. B., Díez, M., Martín, F., … Aguilar, J. (2010). Afforestation improves soil fertility in south-eastern Spain. European Journal of Forest Research, 129(4), 707–717.

标题、作者、年份、ISBN:

Maestre, F. T., & Cortina, J. (2004). Are Pinus halepensis plantations useful as a restoration tool in semiarid Mediterranean areas? Forest Ecology and Management, 198(1-3), 303–317.

标题、作者、年份、ISBN:

Pausas, J. G., Blad, C., Valdecantos, A., Seva, P., Fuentes, D., Alloza, A., … Estudios, C. De. (2004). Pines and oaks in the restoration of Mediterranean landscapes of Spain : New perspectives for an old practice – a review, (Vázquez 1998), 209–220.

标题、作者、年份、ISBN:

Sánchez, J. R., Bonet, a., Bellot, J., & Chirino, E. (2006). Effects of 30-year-old Aleppo pine plantations on runoff, soil erosion, and plant diversity in a semi-arid landscape in south eastern Spain. Catena, 65(1), 19–29.

标题、作者、年份、ISBN:

Valdecantos, a, Baeza, M. J., & Vallejo, V. R. (2009). Vegetation Management for Promoting Ecosystem Resilience in Fire-Prone Mediterranean Shrublands. Restoration Ecology, 17(3), 414–421.