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）

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

有助于对技术进行记录/评估的机构名称（如相关）

Soil Conservation Service of Iceland (Soil Conservation Service of Iceland) - 冰岛

1.3 关于使用通过WOCAT记录的数据的条件

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

1.5 参考关于SLM方法（使用WOCAT记录的SLM方法）的调查问卷

2.1 技术简介

技术定义:

Rangeland restoration - Spreading small portions of inorganic fertilizer and seeds on degraded rangelands

2.2 技术的详细说明

说明:

The concerning rangelands are severely degraded and parts of them have even lost their topsoil layer entirely. Nevertheless, in many cases some remnant vegetation patches are still in place and can serve as seed banks during the restoration process. In order to stabilize the surface (i.e. to reduce the effects of freeze-thaw processes), provide nutrients to the system, increase water availability and facilitate the distribution of native species within the degraded areas, tractors are used to fertilize and reseed the areas with grass species that later in the process will retreat as soon as the dispersal of native species increases. All implementations are based on the methods and tools used in ecological restoration, aiming at re-activating environmental and ecological processes and increasing the resilience of the ecosystems undergoing restoration. Minimum portions of fertilizer and seed are distributed over pre-selected areas, preferably close to the remaining vegetation "islands" in order to facilitate seed production and dispersal and provide safe sites for seed germination.

Purpose of the Technology: The purpose with the technology is to halt further land degradation and facilitate natural succession within the area undergoing restoration. In the long-term, it should substantially reduce wind and water erosion. It should also lead to increased biodiversity, enhanced water availability and accelerated carbon sequestration (in soil and vegetation). The overall restoration task is to increase the resilience of the ecosystems against natural hazards; such as volcanic activities.

Establishment / maintenance activities and inputs: In the first year, the areas are treated with a mixture of chemical fertilizer that fits the local soil condition and grass seed that are proofed to survive under harsh condition. A mixture of approx 200 kg/ha of fertilizer and around 10 kg/ha of grass seed (usually a mixture of Poa and Festuca species) is spread over the treated area. The year after the area is treated again, this time with fertilizer only (approx 100-150 kg/ha). Then the area is usually treated biannually for 4 to 6 years, based on the vegetational succession rate.

Natural / human environment: In the long-term, the technology is expected to substantially increase biomass production, re-build soil qualities, accelerate carbon sequestration and secure water availability within the rangeland and the adjacent ecosystems. The areas still grazed are expected to be more suitable for livestock grazing and the protected areas are expected to be of more recreational and aesthetic value. Increased vegetation cover will reduce and even halt the sand drift that still creates challenges for inhabitants in adjacent villages, on farmsteads and within the summerhouse clusters, scattered around the area. As the degraded rangeland is in the vicinity of an active volcano (Mt Hekla) the technology is also expected to increase ecosystem resilience against natural hazards like ash and pumice drift and reduce potential offsite damages caused by these materials.

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:

• 50多年前（传统）

2.7 技术介绍

详细说明该技术是如何引入的:

• 作为传统系统的一部分（> 50 年）
• 通过项目/外部干预

• by the Soil Conservation Service (governmental institute)

3.2 应用该技术的当前土地利用类型

同一土地单元内混合使用的土地：:

是

具体说明混合土地使用（作物/放牧/树木）:

• 林牧业

注释:

Major land use problems (compiler’s opinion): Vast parts of the area are heavily degraded due to unsustainable land use through the centuries in combination to harsh climate and frequent volcanic eruptions. The major land use problem are related to the fact that the concerned ecosystems collapsed long time ago and despite all restoration efforts implemented within the area for over 100 years, the systems are still highly dysfunctional. Their carrying capacity is limited and even light livestock grazing can keep further vegetational succession down. Passive restoration might take place where the livestock grazing has been excluded but in most cases some technologies are needed to "kickstart" the ecosystem and brake their negative resilience against changes.

Major land use problems (land users’ perception): They are fully aware that the ecosystems are in a poor condition and restoration is needed in order to push improvements forward. They acknowledge that grazing of collapsed ecosystems can maintain the dysfunctional of the systems and hinder ecological improvements. Nevertheless, in many cases they believe the harsh climate and volcanic activities are the main contributors to land degradation - that livestock grazing and the grazing carrying capacity of the rangeland are not fundamental issues in this context.

Types of other land: Wastelands / deserts / glaciers / swamps

Types of other land: Recreation

3.3 由于技术的实施，土地使用是否发生了变化？

由于技术的实施，土地使用是否发生了变化？:

• 是（请在技术实施前填写以下有关土地利用的问题）

3.5 该技术所属的SLM组

• 改良的地面/植被覆盖

3.6 包含该技术的可持续土地管理措施

注释:

Main measures: vegetative measures, management measures

Specification of other structural measures: fertilizing and seeding rather flat but gravel surface

Type of agronomic measures: retaining more vegetation cover, mineral (inorganic) fertilizers

Type of vegetative measures: scattered / dispersed

3.7 该技术强调的主要土地退化类型

注释:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion, Et: loss of topsoil, Bc: reduction of vegetation cover

Secondary types of degradation addressed: Wo: offsite degradation effects, Hg: change in groundwater / aquifer level

Main causes of degradation: deforestation / removal of natural vegetation (incl. forest fires) (in earlier centuries), over-exploitation of vegetation for domestic use (in earlier centuries), overgrazing (in earlier centuries), change in temperature, wind storms / dust storms, other natural causes (avalanches, volcanic eruptions, mud flows, highly susceptible natural resources, extreme topography, etc.) specify, poverty / wealth (in earlier centuries)

Secondary causes of degradation: soil management (in earlier centuries (from settlement in 874 onward)), floods, droughts, land tenure, governance / institutional (vague policies (especially in the last 50 years or so))

3.8 防止、减少或恢复土地退化

注释:

Main goals: prevention of land degradation, mitigation / reduction of land degradation, rehabilitation / reclamation of denuded land

4.1 该技术的技术图纸

4.2 有关投入和成本计算的一般信息

其它/国家货币（具体说明）:

ISK

如相关，注明美元与当地货币的汇率（例如1美元=79.9巴西雷亚尔）：1美元=:

113.0

4.3 技术建立活动

	活动	时间（季度）
1.	Fertilizing and re-seeding	May/June

4.4 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%
劳动力	Fertilizing and re-seeding	ha	1.0	66.0	66.0
设备	Machine use	ha	1.0	44.0	44.0	100.0
植物材料	Seeds (20kg)	ha	1.0	137.0	137.0
肥料和杀菌剂	Fertilizer (200kg)	ha	1.0	118.0	118.0
技术建立所需总成本					365.0
技术建立总成本，美元					3.23

4.6 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%
劳动力	Labour	ha	1.0	66.0	66.0
设备	Machine use	ha	1.0	44.0	44.0	100.0
肥料和杀菌剂	fertilizer	ha	1.0	118.0	118.0
技术维护所需总成本					228.0
技术维护总成本，美元					2.02

注释:

The cost was estimated based on official estimation numbers from the SCSI

5.1 气候

5.2 地形

5.3 土壤

如有可能，附上完整的土壤描述或具体说明可用的信息，例如土壤类型、土壤酸碱度、阳离子交换能力、氮、盐度等。:

Soil fertility is very low- low
Soil water storage capacity is very low-low

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

Population density: < 10 persons/km2

5.7 应用该技术的土地使用者使用的平均土地面积

5.8 土地所有权、土地使用权和水使用权

• governmental institutes

5.9 进入服务和基础设施的通道

6.1 该技术的现场影响

社会经济效应

生产

水资源可用性和质量

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	增加或减少	该技术是如何应对的？
年温度		增加	未知

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	好

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	好

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	未知
Cold spells combined with wind storms	不好

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）？

6.5 技术采用

注释:

There is a moderate trend towards spontaneous adoption of the Technology

6.7 该技术的优点/长处/机会

编制者或其他关键资源人员认为的长处/优势/机会
It bases on the ecosystem approach - working with nature and re-establishing dysfunctional environmental and ecological processes with strong stakeholder involvement

7.1 信息的方法/来源