FERTILIZERS AND EUTROPHICATION IN SOUTHWESTERN AUSTRALIA - SETTING THE SCENE

被引：66

作者：

HODGKIN, EP

HAMILTON, BH

机构：

[1] Environmental Protection Authority, Perth, 6000, Western Australia

[2] Waterways Commission, Perth, 6000, Western Australia

来源：

FERTILIZER RESEARCH | 1993年 / 36卷 / 02期

关键词：

EUTROPHICATION; PHOSPHORUS; FERTILIZER; PEEL-HARVEY ESTUARY; ALGAL BLOOMS;

D O I：

10.1007/BF00747579

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

An excess of plant nutrients has caused serious eutrophication in aquatic ecosystems of southwestern Australia manifested by excessive growth and accumulation of green and bluegreen algae. Phosphorus is generally the limiting nutrient for algal growth and phosphatic fertilizers applied to nutrient-deficient, leaching, sandy soils are the main source of P, supplemented by rural industry point sources. Nitrogen is the limiting nutrient in marine embayments with little drainage from the land. Measures to reduce the load of P delivered to drainage include basing fertilizer application rates on soil testing for P and the use of less soluble P fertilizers. Catchment management plans are being implemented with community involvement to reduce P loads and maintain agricultural production. This introductory paper reviews the history of eutrophication in southwestern Australia and of studies into its causes, principally in the large Peel-Harvey estuary. It briefly summarises other papers in this special issue concerned with different aspects of the problem: how to fertilize the land without causing eutrophication.

引用

页码：95 / 103

页数：9

共 22 条

[1]

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[2]

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[3]

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[4]

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[5]

George P.R., Bradby K., The Peel-Harvey catchment management program, Fert Res, 36, pp. 185-192, (1993)

[6]

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[7]

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[8]

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[9]

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[10]

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