WGSMP Chapter 2.1 image

## **Abstract** \n\nThis dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied. \n\n\n\n"This image was taken from the report - The West Gippsland Salinity Management Plan - 2005 which addresses salinity in the West Gippsland region over a 5 year period. The plan details a package of management actions to reduce and prevent the effect of salinity on the region's assets. The plan also details a time frame for adoption, cost sharing arrangements and roles and responsibilities for implementation. The plan was an initiative of the West Gippsland Catchment Management Authority as part of its regional natural resource management program. This plan builds on and updates the existing Lake Wellington Catchment Salinity Management Plan (1993) and the draft South Gippsland Salinity Strategy (2000). The West Gippsland Salinity Management Plan was written by Sinclair Knight Merz on behalf of the West Gippsland CMA. \n\n\n\nThe image is from section 2.1 Salinisation caused by land clearing and irrigation and illustrates the interpreted watertable depth (2002).\n\n\n\nhttp://vro.agriculture.vic.gov.au/dpi/vro/wgregn.nsf/pages/wg_lwm_wg_sal_mgt"\n\n## **Purpose** \n\nExtract from the report. \n\n\n\nDepth to water table is a useful parameter for determining the areas either currently salinised or at risk of becoming salinised. Figure 5 shows the current depth to water table across the region compiled from observation bore data and topographic information. The reliability of the map is highly variable depending on the density of bore information (Figure 5 inset). The highest reliability occurs in the Macalister Irrigation District and surrounds where there are more than 300 observation bores monitored on a monthly basis. However, Salinity Management Areas such as Trafalgar have very few observation bores with a consequent low reliability of depth to water table mapping. Depth to water table is the primary factor in determining salinity risk, although there are other factors such as groundwater salinity, degree of flushing and rainfall. The depth to water table map corresponds well with the mapped saline areas.\n\n## **Dataset History** \n\nThe West Gippsland Salinity Management Plan was written by Sinclair Knight Merz on behalf of the West Gippsland CMA.\n\n\n\nhttp://vro.agriculture.vic.gov.au/dpi/vro/wgregn.nsf/pages/wg_lwm_wg_sal_mgt\n\n## **Dataset Citation** \n\nVictorian Department of Economic Development, Jobs, Transport and Resources (2005) WGSMP Chapter 2.1 image. Bioregional Assessment Source Dataset. Viewed 05 October 2018, http://data.bioregionalassessments.gov.au/dataset/20ea09a5-381f-4850-a681-ea376abb74d3.

## **摘要**

本数据集及其元数据声明由第三方提交至生物区域评估计划（Bioregional Assessment Programme），本文档将按原始提交版本呈现。

"本图像取自《西吉普斯兰盐度管理计划（West Gippsland Salinity Management Plan）》2005版，该计划针对西吉普斯兰地区的盐度问题制定了为期5年的治理方案。该计划详述了一系列管理举措，旨在减轻并防范盐度对该区域各类资源造成的影响，同时明确了举措推行的时间框架、成本分摊机制，以及各方在执行过程中的角色与职责。本计划是西吉普斯兰流域管理局（West Gippsland Catchment Management Authority）区域自然资源管理计划的组成部分，由该局牵头发起，并在《威灵顿湖流域盐度管理计划（1993）》与《南吉普斯兰盐度战略草案（2000）》的基础上进行修订与更新。《西吉普斯兰盐度管理计划》由辛克莱奈特梅尔兹公司（Sinclair Knight Merz）受西吉普斯兰流域管理局委托编制。

本图像取自第2.1节‘土地开垦与灌溉引发的盐渍化’，展示了2002年的解译地下水位埋深（watertable depth）。

http://vro.agriculture.vic.gov.au/dpi/vro/wgregn.nsf/pages/wg_lwm_wg_sal_mgt"

## **用途**

本内容节选自上述报告。

地下水位埋深是判别当前已发生盐渍化区域或潜在盐渍化风险区域的关键参数。图5展示了基于观测井数据与地形信息合成的该区域当前地下水位埋深分布情况。该地图的可靠性差异显著，取决于观测井数据的密度（见图5内嵌图）：可靠性最高的区域为麦卡利斯特灌溉区及其周边，该区域拥有超过300个按月监测的观测井；但特拉法尔加等盐度管理区域的观测井数量极少，因此其地下水位埋深地图的可靠性较低。尽管地下水位埋深是决定盐度风险的核心因素，但还需结合地下水盐度、径流冲刷程度与降雨量等其他参数进行综合研判。该地下水位埋深地图与已填绘的盐渍化区域匹配度较高。

## **数据集历史**

《西吉普斯兰盐度管理计划》由辛克莱奈特梅尔兹公司（Sinclair Knight Merz）受西吉普斯兰流域管理局委托编制。

http://vro.agriculture.vic.gov.au/dpi/vro/wgregn.nsf/pages/wg_lwm_wg_sal_mgt

## **数据集引用**

维多利亚州经济发展、就业、交通与资源部（2005）：《西吉普斯兰盐度管理计划》第2.1节配图。生物区域评估源数据集。2018年10月5日查阅，来源网址：http://data.bioregionalassessments.gov.au/dataset/20ea09a5-381f-4850-a681-ea376abb74d3。