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An enviro-economic analysis of poten...

Westra, John Verlyn.

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An enviro-economic analysis of potential policy instruments targeting phosphorus nonpoint pollution.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	An enviro-economic analysis of potential policy instruments targeting phosphorus nonpoint pollution./
作者:	Westra, John Verlyn.
面頁冊數:	204 p.
附註:	Adviser: Kent D. Olson.
Contained By:	Dissertation Abstracts International62-03A.
標題:	Agriculture, Soil Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3008740
ISBN:	0493191569

An enviro-economic analysis of potential policy instruments targeting phosphorus nonpoint pollution.
Westra, John Verlyn.

An enviro-economic analysis of potential policy instruments targeting phosphorus nonpoint pollution. - 204 p.

Adviser: Kent D. Olson.

Thesis (Ph.D.)--University of Minnesota, 2001.

5 per acre conventional tillage tax nor a 900% phosphorus fertilizer tax achieved a 40% reduction in phosphorus loading. All policies examined caused some land retirement.Neither a

ISBN: 0493191569Subjects--Topical Terms:

1017824
Agriculture, Soil Science.

An enviro-economic analysis of potential policy instruments targeting phosphorus nonpoint pollution.
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100 1 $a Westra, John Verlyn. $3 1257372
245 1 0 $a An enviro-economic analysis of potential policy instruments targeting phosphorus nonpoint pollution.
300 $a 204 p.
500 $a Adviser: Kent D. Olson.
500 $a Source: Dissertation Abstracts International, Volume: 62-03, Section: A, page: 1144.
502 $a Thesis (Ph.D.)--University of Minnesota, 2001.
520 $a Neither a $3 5 per acre conventional tillage tax nor a 900% phosphorus fertilizer tax achieved a 40% reduction in phosphorus loading. All policies examined caused some land retirement.
520 $a The phosphorus effluent tax had to rise to $1 62 per pound before estimated loading was reduced by 40% from base-year levels. At this tax rate, watershed farm income declined by $1 4 million (25% decline) and generated tax revenues of $1 1 million.
520 $a The state of Minnesota seeks to reduce phosphorus loading to the Minnesota River by 40% from levels estimated in the 1980's. I hypothesized potential policies for reducing pollution that targeted specific practices or regions would be no worse than policies requiring proportional reductions in every region.
520 $a Using the Le Sueur River watershed as an example, I analyzed the cost-effectiveness of nonpoint pollution reduction policies (pollution standard, phosphorus effluent tax, conventional tillage tax, and phosphorus fertilizer tax). With a biophysical process model (ADAPT), I simulated systems representative of those producers currently use. Current systems were corn-soybean rotations under various tillage and nutrient management practices. Also simulated were alternative systems for reducing phosphorus loading (using conservation tillage, reducing phosphorus input levels, and incorporating fertilizer applications). For each system, I linked phosphorus loss estimates with production costs, risk premiums, net returns, and location within the watershed to create a nonlinear, positive mathematical programming model. This enviro-economic model was used to analyze the policies mentioned above.
520 $a Under the pollution standard, targeted and nontargeted strategies reduced agricultural nonpoint phosphorus pollution by 40%. Nonetheless, the nontargeted strategy affected the watershed more adversely than the strategy targeting practices or regions. With targeting, annual net farm income for the watershed declined by $2 .8 million (5% loss) from $5 3 million. Income declined by $1 1.4 million (21% loss) annually with a nontargeted strategy.
520 $a These results indicated that strategically targeting particular regions or practices in a watershed to reduce agricultural nonpoint phosphorus pollution is more cost-effective than requiring all farmers and land to adapt. Cost-savings from targeting become evident when critical factors for mitigating nonpoint pollution are represented in an enviro-economic model.
590 $a School code: 0130.
650 4 $a Agriculture, Soil Science. $3 1017824
650 4 $a Economics, Agricultural. $3 626648
650 4 $a Environmental Sciences. $3 676987
650 4 $a Political Science, Public Administration. $3 1017438
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710 2 0 $a University of Minnesota. $3 676231
773 0 $t Dissertation Abstracts International $g 62-03A.
790 $a 0130
790 1 0 $a Olson, Kent D., $e advisor
791 $a Ph.D.
792 $a 2001
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