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）

University of Padova (UNIPD) - 意大利

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？:

17/10/2014

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 请参阅有关SLM方法的问卷

2.1 技术简介

技术定义:

Vegetated water basins for the control of diffuse pollution

2.2 技术的详细说明

说明:

In the last 50 years high intensive monoculture practices implied an oversimplification of agro-ecosystems, a decline of biodiversity and a deterioration in the quality of water resources. The need to prevent nonpoint surface water pollution form agricultural practices has recently led to consider wetlands as effective depurative systems. Construction and maintenance of wetlands have been supported by the Veneto region as an agri-environmental measure through the Rural Development Programme (RDP).

Purpose of the Technology: Wetland systems (WSs) depurate water resources from diffuse pollution, creating a semi-natural environment that promote wildlife and generally biodiversity. WS are characterised by the complete submersion (or for most part of the year) of the soil and a slow water flow that favour environmental and natural functions such as denitrification, flood control, suspended solids sedimentation. Moreover wetlands have been proposed as an alternative land use in reclaimed areas below the sea level which are facing problems of subsidence.

Establishment / maintenance activities and inputs: Thanks to their effectiveness on the improvement of agri-ecosystems, the maintenance and creation of wetland systems have been supported by the regional government in order to reduce the environmental impacts of conventional agriculture practices. The area invested to create a wetland depends on the input pollutants, the size of the area that is considered and the availability of space. The creation of a wetland system provides the establishment of emergent and submerged aquatic macrophytes on a water basin ca. 50 cm depth. The efficacy of water depuration is strictly related to the water residence time.

Natural / human environment: Adopting wetland systems allows to achieve several environmental benefits. Generally, the ecosystem is positively affected by the introduction of a water basin as it provides food, nesting cover and shaded areas to wildlife species. Sediment deposition, anaerobic denitrification conditions and the purifying effect of aquatic plants reduce eutrophication and improve the water quality. Due to their semi-natural structure and high differentiation of plant species, WSs enhance the quality of life through the improvement of agricultural landscape and the creation of recreational areas.

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:

• 在实验/研究期间

3.1 该技术的主要目的

• 保护生态系统
• 结合其他技术保护流域/下游区域

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): Diffuse water pollution due to intensive agriculture
Future (final) land use (after implementation of SLM Technology): Other: Oo: Other: wastelands, deserts, glaciers, swamps, recreation areas, etc

如果由于技术的实施而导致土地用途发生变化，则在技术实施前说明土地利的用途。:

Cropland: Ca: Annual cropping

3.3 有关土地利用的更多信息

该技术所应用土地的供水:

• 混合雨水灌溉

注释:

Water supply: rainfed, full irrigation

每年的生长季节数:

• 1

具体说明:

Longest growing period in days: 210 Longest growing period from month to month: March to OctoberSecond longest growing period in days: 180

3.4 该技术所属的SLM组

• 湿地保护/管理

3.6 包含该技术的可持续土地管理措施

注释:

Main measures: structural measures

Specification of other structural measures: Water basin

3.7 该技术强调的主要土地退化类型

注释:

Main type of degradation addressed: Bh: loss of habitats, Bs: quality and species composition /diversity decline, Hp: decline of surface water quality

Main causes of degradation: soil management, population pressure

Secondary causes of degradation: crop management (annual, perennial, tree/shrub), deforestation / removal of natural vegetation (incl. forest fires)

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
• 减少土地退化

注释:

Main goals: prevention of land degradation

Secondary goals: mitigation / reduction of land degradation

4.1 该技术的技术图纸

4.2 技术规范/技术图纸说明

Plan and longitudinal view of a constructed wetland sited at the Experimental Farm of University of Padova. A-B: longitudinal section; C: pump; D: wetland inlet; E: wetland outlet; F: side bank; G: stream.

Location: Legnaro. Padova, Italy

Technical knowledge required for field staff / advisors: high

Technical knowledge required for land users: moderate

Main technical functions: control of dispersed runoff: retain / trap, control of dispersed runoff: impede / retard, improvement of water quality, buffering / filtering water

Dam/ pan/ pond
Height of bunds/banks/others (m): 0.3
Width of bunds/banks/others (m): 10
Length of bunds/banks/others (m): 40

Construction material (earth): Wetland banks are made locally by soil. Dimensions refer to 1 m3 water to treat/day

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=:

0.8

4.4 技术建立活动

	活动	措施类型	时间
1.	Capital costs for land, site investigation, plants, water control, media	结构性的
2.	Not available	管理

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%
其它	Capital costs. System implementation	ha	1.0	2500.0	2500.0	30.0
技术建立所需总成本					2500.0

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 low-medium
Soil drainage/infiltration is medium
Soil water storage capacity is medium

5.4 水资源可用性和质量

关于水质和水量的注释和进一步规范:

Water quality (untreated): For agricultural use only (surface water) and good drinking water (groundwater)

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:

Population density: 200-500 persons/km2

Annual population growth: 0.5% - 1%

5.7 应用该技术的土地使用者拥有或租用的平均土地面积

5.8 土地所有权、土地使用权和水使用权

土地使用权:

• 个人

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

生物多样性:植被、动物

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

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	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）？

注释:

There is a need of initial investment, however wetlands can improve the multifunctionality of agricultural systems and create additional economic opportunities to the agro-ecological benefits.

6.5 技术采用

注释:

Comments on acceptance with external material support: The technology was supported by regional government and some farmers adopted it. However small farms (the majority in the area, just few hectares) can more difficulty adopt the technology due to a wide area required for its implementation.

Comments on spontaneous adoption: Very few adopted spontaneusly the technology

There is a little 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
Improves surface water quality How can they be sustained / enhanced? strenghten and support maintenance activity
Increases recreational areas How can they be sustained / enhanced? Better territorial marketing
Favours biodiversity and faces the loss of habitats How can they be sustained / enhanced? Enlarge wetland areas

6.8 技术的弱点/缺点/风险及其克服方法

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？
Reduces crop production	Differentiate the farmers' income

7.2 参考可用出版物

标题、作者、年份、ISBN:

Treatment wetlands, Kadlec R.H & Wallace S.D., 2008

标题、作者、年份、ISBN:

Programma di sviluppo rurale per il veneto 2007-2013, Regione Veneto, 2007. Dipartimento Agricoltura e Sviluppo Rurale.