Dryland salinity also causes serious damage downstream from where the clearing has happened. Consequently species loss will continue. Under the soils of Agents of change salinity in australia essay Western Australian wheatbelt and some parts of eastern Australia the salt store is so immense, and the movement of sub-surface water so slow, that restoration to fertility of salt-effected land will take generations.
Many of those species are restricted naturally to places in the landscape which we will lose to salt. Australia, In an effort to maintain and control the spread of salinity, the Commonwealth, State and Territory governments have. Deep rooted native vegetation tended to use most of the rainfall that it received.
Prior to British settlement ingroundwater levels were in equilibrium. But how the banks and large Agribusiness firms will respond is uncertain.
Several areas of high conservation value native vegetation are threatened; they include tea-tree shrublands and native grasslands in the Coorong and Upper South East districts.
Operating in damp, saline conditions, railways, vehicles and plant machinery can be damaged prematurely by rusting and corrosion Government of S.
The native Australian vegetation evolved to be salt-tolerant. It is a tragic irony that the felling of many billions of trees to make room for the farming that let this nation prosper has caused, in just years, our worst environmental crisis, and destroyed a natural balance that had existed for millenia.
But in the adjacent, undisturbed banksia woodland, there was no loss of either. What is certain is the need for urgent action, more research, and political will at every level to take hard decisions that may often prove unpopular.
Increased salinity could cause the extinction of approximately species of native flora and species of invertebrate water fauna in the western Australian wheatbelt Australian Government, Some areas may never recover.
However the shallower rooted crop plants that are replacing the native vegetation does not use all the rainfall that it receives, causing the excess rainfall to seep deep down through the soil profile Government of S. Increased salinity could cause the extinction of approximately species of native flora and species of invertebrate water fauna in the western Australian wheatbelt Australian Government, Salt is a natural feature of the Australian landscape.
The traditional family farm may disappear, with people being paid to stop cropping and start the long-term investment of tree-planting. The excess water is recharging the underlying ground water systems at a much faster rate than what was occurring under natural conditions and consequently the ground water levels are rising.
Dryland salinity, the gradual loss of farm and grazing land to rising salt, is a massive problem, hard to comprehend and harder still to stop. With every fall of rain, unused water "leaks" down to the water table, raising it, and bringing the salt up with it. Dryland salinity is caused when the rising water-table surfaces natural salts in the soil.
Firstly, the addition of irrigation acts to simulate rainfall, and if not applied at appropriate levels, can result in the recharge of water tables, and promotes rises in the water table. Salinity describes the salt content of water or soil. The clearing of the natural vegetation results in the slow release of these salts to the soil surface or to the river system, which causes a dramatic increase in the salt concentration of the river flow Anonymous, There is a continuing loss of productive farmland; degradation of soil and water resources; extinction of native plant and animal species and social and economic decline of rural communities.
Now farmers are frightened as they watch their farms degrade, billions of dollars are being lost, and scientists are admitting for the first time that there are no practical answers yet.
And parts of Western Sydney, in the South Creek catchment, are finding this once rural problem has finally come even to the biggest of cities.
As a part of the NAP an airborne geophysical survey was conducted in Salinity in Western Australia: a situation statement V T. Read change over time and conclusions should be interpreted in the light of the latest information available.
Chief Executive Officer, Department of Agriculture Western Australia causal agents of salinity and determine appropriate catchment management. Jun 30, · Salinity in Australia topic. Soil salinity and dryland salinity are two problems degrading the environment of Australia. Salinity is a concern in most states, but especially in the south-west of Western Australia.
These issues are the primary concern of the environmental movement in Australia.
Climate change Climate change. In South Australia more than $6 million is spent annually on building repairs and maintenance to fix things caused by salinity. (Government of S. Australia, ) In an effort to maintain and control the spread of salinity, the Commonwealth, State and Territory governments have adopted a National Action Plan for Salinity and Water 4/4(1).
Western Australia is the state most affected by salinity with 6, farms and almost million hectares of agricultural land showing signs of salinity, and % (, hectares) of salinised land unable to be used for production.
Dryland salinity, the gradual loss of farm and grazing land to rising salt, is a massive problem, hard to comprehend and harder still to stop. There is salt everywhere in Australia; vast amounts.
Agents of Change Salinity in Australia Essay byHigh School, 11th grade, A, June download word file, 6 pages download word file, 5/5(1).Download