技术

Ecograze [澳大利亚]

technologies_1332 - 澳大利亚

完整性: 76%

1. 一般信息

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

关键资源人

SLM专业人员:
有助于对技术进行记录/评估的项目名称(如相关)
Book project: where the land is greener - Case Studies and Analysis of Soil and Water Conservation Initiatives Worldwide (where the land is greener)
有助于对技术进行记录/评估的机构名称(如相关)
CSIRO (CSIRO) - 澳大利亚

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。:

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?:

1.5 参考关于SLM方法(使用WOCAT记录的SLM方法)的调查问卷

2. SLM技术的说明

2.1 技术简介

技术定义:

An ecologically sound and practical grazing management system, based on rotation and wet season resting.

2.2 技术的详细说明

说明:

Open eucalypt woodlands cover approximately 15 million hectares in the semi-arid plains of north-east Australia, and support about a million head of cattle. Keeping these grazing lands productive and healthy demands good management, and getting the right balance between stock numbers and the forage resource is a considerable challenge.
Land in good condition has a healthy coverage of so-called ‘3P grasses’: native perennial, productive and palatable grasses, important to cattle and to the health of the landscape. Less palatable plants include annual grasses, native and exotic forbs and shrubs. The heterogeneity of the pasture resource results in uneven utilisation, and thus overgrazing in parts.
In order to prevent pastures in good condition from degrading, or to restore/improve deteriorated pastures, utilisation needs to be adjusted according to climate and the state of the ‘3P grasses’. In practice, the only means of manipulating pasture composition over large areas are grazing, resting from grazing, and burning.
The flexible Ecograze system includes wet season resting, and is based on the establishment of three paddocks with two herds within a rotational system. The key is that all paddocks get some wet season rest two years out of three. Wet season rests are divided into two phases: (1) The early wet season rest starts after the first rains in November/December and continues for 6-8 weeks, it is particularly good for perennial grass recovery; (2) the late wet season rest lasts until March/April and aids both seed set and vegetative recovery.
Average paddocks of around 3,000 ha in size are sub-divided into three relatively equal sizes, though some flexibility is required to balance variation in the productive capacity of different land types within the paddock. The paddocks are fenced and extra water points through polythene piping and additional water troughs, and where required, pumps are established. The return on investment can be realised within a few years.
The main management challenges are: (1) the timing and length of the early wet season rest, which depends on how effectively the early rains promote vegetative growth of perennial grasses, and (2) the movement of animals during the wet season. The number of stock movements are fixed - but the timing is flexible and should be responsive to the situation: the challenge is to learn to assess the pasture condition, read the situation, and schedule the timing and length of the rest period accordingly. The main criterion is the recovery state of perennial grasses.

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

国家:

澳大利亚

区域/州/省:

Queensland

有关地点的进一步说明:

North-eastern Queensland

具体说明该技术的分布:
  • 均匀地分布在一个区域
如果技术均匀分布在一个区域,则指定覆盖的区域(单位为平方千米):

10.0

如果不知道精确的区域,请注明大致覆盖的区域:
  • 10-100 平方千米
注释:

Total area covered by the SLM Technology is 10 m2.

study terminated after 8 years (2000-2001).
The paddocks of an average size of around 30 km2 are subdivided into three paddocks of an average size of 10 km2. The technology is therefore documented on one of the subdivided paddocks. The 10 km2 is the area per subdivided paddock, each farm (localities) has 10 km2 (respectively 3*10km2) area, where the technology is applied.

2.6 实施日期

如果不知道确切的年份,请说明大概的日期:
  • 不到10年前(最近)

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
注释(项目类型等):

Meat and Livestock Australia initiated the project to improve the understanding of the effects of grazing, spelling, fire and climate on the condition and productivity of open eucalyptus woodlands in north-eastern Queensland.

3. SLM技术的分类

3.1 该技术的主要目的

  • 减少、预防、恢复土地退化

3.2 应用该技术的当前土地利用类型

牧场

牧场

粗放式放牧:
  • 经营牧场
  • Cattle
注释:

Major land use problems (compiler’s opinion): Over the last 20 years there has been a decline in the condition of grazing lands in north-east Australia. The evidence is a decline of palatable, perennial, productive grasses (‘3P grasses’), reduced ground cover and an increase in sediment and nutrient movement into streams. As a consequence of economic pressures and over-optimistic expectations of good rains, stocking rates have often been too high.

Major land use problems (land users’ perception): same as above (combined)

Ranching: Yes

3.4 供水

该技术所应用土地的供水:
  • 雨养

3.5 该技术所属的SLM组

  • 轮作制度(轮作、休耕、轮垦)
  • 畜牧业和牧场管理

3.6 包含该技术的可持续土地管理措施

管理措施

管理措施

  • M2:改变管理/强度级别
注释:

Main measures: vegetative measures, management measures

Type of vegetative measures: scattered / dispersed

3.7 该技术强调的主要土地退化类型

土壤水蚀

土壤水蚀

  • Wt:表土流失/地表侵蚀
  • Wg:冲沟侵蚀/沟蚀
  • Wo:场外劣化效应
物理性土壤退化

物理性土壤退化

  • Pc:压实
  • Pk:熟化和结壳
生物性退化

生物性退化

  • Bc:植被覆盖的减少
  • Bs:质量和物种组成/多样性的下降
注释:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion, Wg: gully erosion / gullying, Wo: offsite degradation effects, Pc: compaction, Pk: sealing and crusting, Bc: reduction of vegetation cover, Bs: quality and species composition /diversity decline

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:
  • 减少土地退化

4. 技术规范、实施活动、投入和成本

4.1 该技术的技术图纸

技术规范(与技术图纸相关):

The drawing refers to the ‘two herd/three paddock Ecograze system’. Paddock A is rested in the early wet season, while Paddocks B and C are grazed. Paddock B is then rested for the late wet season while Paddocks A and C are razed. Paddock C is then rested for the dry season and the next early wet season while Paddocks A and B are grazed. Paddock A is then rested for the late wet season and the rotational cycle continues in this fashion for the three years of the full rotation. Early wet season spelling should commence after the first significant rains in November/December and should continue for 6-8 weeks, depending on how effectively the early rains promote vegetative growth of perennial grasses. Late wet season rest typically last until March/April, depending on length of growing season.

Technical knowledge required for field staff / advisors: moderate; Technical knowledge required for land users: moderate

Main technical functions: improvement of ground cover, increase in organic matter, increase / maintain water stored in soil, improvement of soil structure

Secondary technical functions: control of concentrated runoff: retain / trap, increase in soil fertility

Scattered / dispersed
Vegetative material: G : grass

Grass species: 3P grasses (native perennial, productive and palatable grasses)

Change of land use practices / intensity level: rotational system, timing and length of resting period, timing of animal movement

Control / change of species composition: grazing, (wet season) resting from grazing and burning

作者:

Mats Gurtner

4.2 有关投入和成本计算的一般信息

具体说明成本和投入是如何计算的:
  • 每个技术区域
注明尺寸和面积单位:

1 ha

具体说明成本计算所用货币:
  • 美元

4.3 技术建立活动

活动 时间(季度)
1. Paddocks first need to be surveyed to understand the various plant communities and soils
2. Paddocks first need to be surveyed to understand the various plant communities and soils.
3. Based on the survey and location of water points, and the most practical location for fences, a paddock design is developed: paddocks are subdivided into relatively equal sizes.
4. Fencing the paddocks Material: metal barbed wire or plain wire for electric fences, steel fence posts, wooden or steel end assemblies (poles) to strain the fence, energisers (for electric fences).
5. Provision of extra water points through polythene piping and additional water troughs - and where required, pumps.

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 Labour ha 1.0 4.0 4.0 100.0
设备 Tools ha 1.0
施工材料 others (specify): metal, wire, wood ha 1.0 6.0 6.0 80.0
技术建立所需总成本 10.0
技术建立总成本,美元 10.0
注释:

Duration of establishment phase: 48 month(s)

4.5 维护/经常性活动

活动 时间/频率
1. Monitoring pastures and soils
2. Mustering (gathering) and shifting (moving) livestock
3. Monitoring pastures and soils.
4. Repair fences (wire, poles, etc)

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 1.0 1.0 100.0
设备 Tools ha 1.0
技术维护所需总成本 1.0
技术维护总成本,美元 1.0
注释:

Current average paddock size is 3,000 ha - commonly 6 km x 5 km. To sub-divide the paddock into three requires two internal fences, each of 5.0 km. Costs of fencing and associated gates are about US$1,200 per km. Labour for fencing is also approximately US$1,200 per km (Note: while this looks expensive, because of the large paddock size, on a per hectare basis this is equivalent to US$ 4.0 per hectare).

5. 自然和人文环境

5.1 气候

年降雨量
  • < 250毫米
  • 251-500毫米
  • 501-750毫米
  • 751-1,000毫米
  • 1,001-1,500毫米
  • 1,501-2,000毫米
  • 2,001-3,000毫米
  • 3,001-4,000毫米
  • > 4,000毫米
农业气候带
  • 半干旱

5.2 地形

平均坡度:
  • 水平(0-2%)
  • 缓降(3-5%)
  • 平缓(6-10%)
  • 滚坡(11-15%)
  • 崎岖(16-30%)
  • 陡峭(31-60%)
  • 非常陡峭(>60%)
地形:
  • 高原/平原
  • 山脊
  • 山坡
  • 山地斜坡
  • 麓坡
  • 谷底
垂直分布带:
  • 0-100 m a.s.l.
  • 101-500 m a.s.l.
  • 501-1,000 m a.s.l.
  • 1,001-1,500 m a.s.l.
  • 1,501-2,000 m a.s.l.
  • 2,001-2,500 m a.s.l.
  • 2,501-3,000 m a.s.l.
  • 3,001-4,000 m a.s.l.
  • > 4,000 m a.s.l.
关于地形的注释和进一步规范:

Landforms: Also hill slopes (ranked 2) and ridges (ranked 3)
Slopes on average: Aslo moderate (ranked 2) and flat (ranked 3)

5.3 土壤

平均土层深度:
  • 非常浅(0-20厘米)
  • 浅(21-50厘米)
  • 中等深度(51-80厘米)
  • 深(81-120厘米)
  • 非常深(> 120厘米)
土壤质地(表土):
  • 中粒(壤土、粉土)
  • 细粒/重质(粘土)
表土有机质:
  • 中(1-3%)
  • 低(<1%)
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 depth on average: Also Shallow (ranked 2) and deep (ranked 3)
Soil fertility: Low
Soil drainage/infiltration: Good (ranked 1) and poor (ranked 2)

5.6 应用该技术的土地使用者的特征

生产系统的市场定位:
  • 商业/市场
非农收入:
  • 收入的10-50%
说明土地使用者的其他有关特征:

Off-farm income specification: usually constitutes off-farm financial investments (eg shares in companies, investment properties, etc)

5.7 应用该技术的土地使用者使用的平均土地面积

  • < 0.5 公顷
  • 0.5-1 公顷
  • 1-2 公顷
  • 2-5公顷
  • 5-15公顷
  • 15-50公顷
  • 50-100公顷
  • 100-500公顷
  • 500-1,000公顷
  • 1,000-10,000公顷
  • > 10,000公顷

5.8 土地所有权、土地使用权和水使用权

  • individual
土地使用权:
  • 租赁
  • 个人

6. 影响和结论性说明

6.1 该技术的现场影响

社会经济效应

生产

饲料生产

降低
增加

饲料质量

降低
增加
收入和成本

农业收入

降低
增加

经济差异

增加
降低

工作量

增加
降低

社会文化影响

SLM/土地退化知识

减少
改良

生态影响

土壤

土壤水分

降低
增加

土壤覆盖层

减少
改良

土壤流失

增加
降低

6.2 该技术的场外影响已经显现

下游洪水

增加
减少

下游淤积

增加
降低

风力搬运沉积物

增加
减少

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)?
短期回报:

消极

长期回报:

积极

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)?
短期回报:

轻度消极

长期回报:

非常积极

6.5 技术采用

如若可行,进行量化(住户数量和/或覆盖面积):

15005

在所有采用这项技术的人当中,有多少人是自发的,即未获得任何物质奖励/付款?:
  • 0-10%
注释:

60% of land user families have adopted the Technology with external material support

5 land user families have adopted the Technology with external material support

5% of land user families have adopted the Technology without any external material support

15000 land user families have adopted the Technology without any external material support

There is a little trend towards spontaneous adoption of the Technology

Comments on adoption trend: There are indications that around 700 (of a total of 15,000) farmers across northern Australia have already adopted some aspects. Surveys indicate spontaneous adoption beyond the region as well. In time a large number of farmers are expected to adopt it.

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
Increased perennial grass cover, improved pasture productivity, increased animal carrying capacity and associated increased profit

How can they be sustained / enhanced? Wide and long-term adoption of Ecograze system.
Improved soil cover reduces erosion and sediment flow into streams and dams

How can they be sustained / enhanced? Manage pasture condition through Ecograze to maintain ‘3P grasses’.
Greater stability of forage supply leading to less problems and less stress in farm management

How can they be sustained / enhanced? Wide and long-term adoption of Ecograze system.
Soil carbon reserves maintained/improved

How can they be sustained / enhanced? Wide and long-term adoption of Ecograze system.
Plant biodiversity protected

How can they be sustained / enhanced? Wide and long-term adoption of Ecograze system.

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?
Adoption of technology needs long-term approach to accommodate for slow rate of change by ranchers Continue to demonstrate the advantages of the technology.
Implementing rotational grazing incurs (moderate) investment costs in the form of fencing and new water points Investigate government subsidies and educate about long-term economic benefits.

7. 参考和链接

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:

Ash A, Corfield J and Taoufik T (undated) The ECOGRAZE Project: developing guidelines to better manage grazing country. CSIRO, Meat and Livestock Commission and Queensland Government

标题、作者、年份、ISBN:

Tothill JC and Gillies C (1992) The pasture lands of northern Australia: their condition, productivity and sustainability Occasional Publication No.5, Tropical Grassland Society of Australia, Brisbane

标题、作者、年份、ISBN:

Tothill J and Partridge I (1998) Monitoring grazing lands in northern Australia - edited by Occasional Publication No.9, Tropical Grassland Society of Australia, Brisbane

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