4 river health assessment guiding principles

River health assessment: 河流健康评估 : Guiding principles 指导准则

Prof Stuart Bunn 斯图亚特 · 巴恩教授Director, Australian Rivers Institute 澳大利亚河流学会会长Griffith University 格里菲斯大学

Identify the objectives of the program 确定项目目标

Clean, fresh drinking water is an example of an ecosystem service that healthy rivers provide … (for free)

洁净、新鲜的饮用水是是健康河流“免费”提供的生态产品的一个例证

- Ecosystem goods and services 生态系统的产品和服务

Why monitor? 需要监测的原因 ?• To ensure that important environmental ‘assets’ and

‘values’ are protected ” ”保证重要的环境“资产及“价值得到保护

Other examples of ‘assets’ 其它例证

Fishing - protein 捕鱼 - 蛋白质

Recreation

娱乐

Aesthetics 美的享受

Freshwater biodiversity

淡水生物多样性

1 Identify the objectives of the program 确定项目目标

2 Identify suitable measures (indicators) of drivers, stressors and response确认合适的驱使因素，压力源和反应的指标

3 Develop conceptual models linking range of drivers to potential impacts联系驱使因素和潜在影响开发概念模型

4 River Classification to identify homogenous ‘river types’河流分类从而确认相同的河流类型

5 Trial sampling program and refinement of indicators 采样试验，完善指标

6 Selection of suitable benchmarks for ecological indicators选取合适的生态指标的基准

7 Reporting & Communication 报告和交流

8 Implement management actions to address priority areas/threats执行管理行动，明确地区 / 威胁的优先顺序

Important steps 项目发展的重要步骤

Outline 概









Identify the objectives of the program

确定项目目标Important to set clear goals and objectives and be able to present a vision for the future: 设置明确目标及对未来愿景的阐述非常重要

For example, your vision might simply be “Healthy River” ”例如，你的愿景可能非常简单：“健康的河流

What would a healthy river look like? 健康的河流应该是怎样的？•Is it safe to drink? 河水是否可以安全饮用？•Will it have more fish? 是否拥有更多的鱼类？•Will it be safe to eat the fish? 河流中的鱼类是否可以安全食用？

With a clear vision, it is possible to identify the values that reflect that vision, and the water quality and ecosystem health objectives that protect those values. 有了清晰的愿景我们才能够确定反映该愿景的价值，才能确定保护这些价值的水质及环境系统健康的指标


2 Identify suitable measures (indicators) of drivers, stressors and response 确认合适的驱使因素，压力源和反应的指标








Tools to quantify river health? 定量河流健康的方法Traditional water chemistry 传统的水中化学元素含量检测• recognized not adequate on its own 不足以准确测量，需要其他数据

Widespread use of biota 被广泛应用的生物群测量方法

Three components of river health: 河流健康的三个要素• ecosystem vigour 系统活力 (e.g. rate of processes such as primary

production)

• organisation 种群结构 (refers to diversity and structure of biological communities)

• Resilience 系统自我修复能力 (refers to a system’s capacity to recover after disturbance,

(Rapport et al. 1998)

Macroinvertebrate assemblages 大型无椎动物集合

Invertebrates as Indicators 无脊椎动物

Why use invertebrates? 为什么选择无脊椎动物做为河流健康评估指标

– Ubiquitous分布广• occur in most habitats across a diverse range of aquatic systems在不同的水生生态系统中广泛分布

– Many species and families大量的种类和种群• spectrum of responses to environmental stresses许多种类对环境变化反应敏感

– Sedentary稳定• effective spatial analyses of pollutants or disturbance effects稳定不迁徙，有效的在空间上分析污染及干扰的程度

– Longevity持续时间长• evaluation of temporal changes测试短时间的变化

Act as continuous monitors of the water they inhabit在其居住水域中可持续监测

Fish assemblages 鱼类集合

Fish as Indicators 鱼类Why use fish? 选择鱼类做为河流健康评估指标的原因

– Life history information often available可知道其生长的年份

– Cover various trophic classes涉及不同层次的食物链

– Acute toxicity & stress effects generally known对河流毒性及压力反应激烈

– Affected by large scale influences为规模较大的变化影响

– Long lived存活时间长

– Have social and cultural value同时具有社会及文化价值

Ecosystem processes 生态系统测量过程

Primary production初级生产力

Selection of indicators 选择评估指标Important to select a few indicators that are meaningful. 选择有意义的指标非常重要 •Ones that respond to things that threaten the values we identify 这些指标可以直接响应我们确定的河流既定价值•Guide management actions 为实施管理提供指导方针

Design of the monitoring program and selection of indicators are very important. 监测项目的设计及评估指标的选择非常重要



3 Develop conceptual models linking range of drivers to potential impacts 联系驱使因素和潜在影响开发概念模型







• Show how healthy ecosystems function 展示健康的生态系统如何运作

• Show how important assets are affected by human disturbance 展示重要的环境资产如何受人为活动影响

• Indicate critical components in the ecosystem to target for monitoring 显示生态系统中必须检测的关键因素

• Highlight appropriate management actions for rehabilitation 着重强调如何从利用管理手段复原健康生态系统

GPP R24N and P Sediment

Highly Impacted Site 受影响较大的地域

SEQRWQMS 2001

GPP R24

Minimally Impacted Site 受影响较小的地域

Nutrients Sediment

SEQRWQMS 2001

What factors influence important environmental assets? 影响重要环境资产的因素

Identify threats to river ecosystems 確定對河流生態系統的威脅

Point and diffuse source pollution 污染排放源

Dams and weirs – barriers, altered flows 水庫及其他改變原徑流形態的因素

Loss of floodplains and wetlands 泛洪區及濕地流失

Threats to river ecosystems 對河流生態系統的威脅

River Classification河流分类

Different types of river will:

不同的河流将• Require different indicators

要求不同的指示物• Have different targets

有不同的目标

Based on 4 variables 基于以下 4个条件分类

– rainfall 降雨– altitude 海拔– slope 坡度– stream size 河流大小

4 groups 4种河流类型– Upland (red) 高地类（红）– Lowland (blue) 低地类（蓝）– South Coastal (green) 南部沿海类（绿色）– North Coastal (light blue) 背部沿海类（浅蓝）

Classification of SE Queensland streams 东南昆士兰州河流类型分类





5 Trial sampling program and refinement of indicators

采样试验，完善指标





Disturbance gradient approach to

detecting impacts

应用干扰变化方法发现影响• Define a disturbance gradient

定义干扰变化

• Objective comparisons - at same sites & times

目标比较 - 在相同试点和时间

Testing indicators 测试指标

Literature survey – examples from

previous studies ——文献综述文献研究中的案例

Testing indicators against a disturbance gradient 测试指标与干扰变化

Disturbance gradient 干扰变化Low低 High高

Eco

log

ical

hea

lth in

dica

tor

生态健康参数指标

Reference values 参数值

XE

colo

gica

l hea

lth in

dica

tor

生态健康参数指标

Disturbance gradient 干扰变化Low低 High高

Testing indicators against a disturbance gradient 测试指标与干扰变化

What is ‘healthy’ and what is not?

” ”何为“健康与“不健康

Reference or benchmark for indicators指标基准参考

X

Reference or benchmark for indicators指标基准参考

Need to define a reference point for indicators

需要定义指标的参考点– What should we expect at a site? 我们对试点应该期待些什么？

Logical reference point is: 逻辑参考点是：– Expected condition if undisturbed by human activity (Biological

Integrity) 无人为影响的期待的条件（生物完整性）

In practice 实践中：– Such sites will not exist for many stream types

该试点不广泛存在在很多河流类型

– Common as a concept, rare in practice概念里比较普遍，但实践中很少

Alternatives 其它可能• Minimally disturbed condition (MDC) 最低限度干扰情况

– Best approximation of RC(BI) 的最好近似值

– Most common form of reference 参考的最普遍形式

– Difficult to find enough sites (not enough for some parts of China)很难找到足够试点（中国某些地方）

• Historical condition 历史条件

– At a point in history prior to major disturbance (long ago in China)在未受到重大干扰的时间（很久之前）

• Least disturbed condition (LDC) 最少干扰的条件

– Best that can be found today (for some stream types, most disturbed)如果能在现在找到最好（对某些河流类型，最受干扰的）

• Best attainable condition 最佳可实现的条件

– Expected condition if Best Management Practices were in use, for a given use of the river/catchment 应用最佳管理方法的预期条件，对于某一给定的河流

Pb

As

Cd Hg

Cu

Ni

Ag

Zn

Pb

As

Cd Hg

Cu

NiAg

ZnBiota

Tissue metals

Sediment metals

Dissolved metals

Other waterquality

Pb

As

Cd Hg

Cu

Ni

Ag

Zn

Cond.

pHTSS

TG1:TG4 Biomass

Biomassper Indiv.

%TG1

%TG2 %TG3

Report card – communication tool ——评估报告卡沟通工具

Need to standardize scores for different indices 必须对不同的指标制定统一的评估标准

Combine indices into indicator groups (average or minimum?) 整合评估指数与评估指标群（平均或者最小？）

Weighting different indicators – according to the goals of the program 根据评估目的权衡不同的评估指标

Example of Report card 其他报告卡样本

Strickland River, New Guinea.斯特里克兰，新几内亚

Thank you 谢谢

4 river health assessment guiding principles

Technology