東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

A long way from the Gulf: Economic a...

Petrolia, Daniel Ryan.

FindBook

Google Book

Amazon

博客來

A long way from the Gulf: Economic and environmental targeting of agricultural drainage to reduce nitrogen loads in a Minnesota watershed.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A long way from the Gulf: Economic and environmental targeting of agricultural drainage to reduce nitrogen loads in a Minnesota watershed./
作者:	Petrolia, Daniel Ryan.
面頁冊數:	201 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-03, Section: A, page: 1097.
Contained By:	Dissertation Abstracts International66-03A.
標題:	Economics, Agricultural. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3167706
ISBN:	9780542035944

A long way from the Gulf: Economic and environmental targeting of agricultural drainage to reduce nitrogen loads in a Minnesota watershed.
Petrolia, Daniel Ryan.

A long way from the Gulf: Economic and environmental targeting of agricultural drainage to reduce nitrogen loads in a Minnesota watershed. - 201 p.

Source: Dissertation Abstracts International, Volume: 66-03, Section: A, page: 1097.

Thesis (Ph.D.)--University of Minnesota, 2005.

Hypoxia in the Gulf of Mexico is a significant environmental and economic problem. Nitrogen loads in the Mississippi River, and in particular, those from agricultural watersheds in the Upper Mississippi River Basin, have been identified as significant contributors. Unfortunately, research addressing the problem has failed to account for the impacts of agricultural drainage, which is the major pathway of nitrate loads for upper Midwest states, where row crop agriculture, heavily dependent on nitrogen fertilizer and tile drainage, is predominant.

ISBN: 9780542035944Subjects--Topical Terms:

626648
Economics, Agricultural.

A long way from the Gulf: Economic and environmental targeting of agricultural drainage to reduce nitrogen loads in a Minnesota watershed.
LDR:03324nmm 2200289 4500 001 1825038
005 20061205094416.5
008 130610s2005 eng d
020 $a 9780542035944
035 $a (UnM)AAI3167706
035 $a AAI3167706
040 $a UnM $c UnM
100 1 $a Petrolia, Daniel Ryan. $3 1914062
245 1 2 $a A long way from the Gulf: Economic and environmental targeting of agricultural drainage to reduce nitrogen loads in a Minnesota watershed.
300 $a 201 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-03, Section: A, page: 1097.
500 $a Adviser: C. Ford Runge.
502 $a Thesis (Ph.D.)--University of Minnesota, 2005.
520 $a Hypoxia in the Gulf of Mexico is a significant environmental and economic problem. Nitrogen loads in the Mississippi River, and in particular, those from agricultural watersheds in the Upper Mississippi River Basin, have been identified as significant contributors. Unfortunately, research addressing the problem has failed to account for the impacts of agricultural drainage, which is the major pathway of nitrate loads for upper Midwest states, where row crop agriculture, heavily dependent on nitrogen fertilizer and tile drainage, is predominant.
520 $a The present study addressed this research gap by explicitly incorporating tile-drained land into the analysis and focusing on an agricultural watershed in southwestern Minnesota, USA. This study relied on the Agricultural Drainage And Pesticide Transport (ADAPT) simulation model, designed for cropland with tile drainage, and calibrated and validated for Midwestern farm landscapes. ADAPT output was combined with economic data to conduct constrained-optimization simulations using GAMS to evaluate the water-quality and economic impacts of nitrogen-abatement policies such as nutrient management, land retirement, and drainage removal.
520 $a The major finding of this study is that tile drainage plays a dominant role in nitrogen abatement. In the simulations conducted, tile-drained land accounted for 80 percent or more of abatement, even though it comprised no more than 21 percent of the total area in the study watersheds. Results indicate that the most widely-endorsed nitrogen-abatement policy in the literature, nutrient management, makes sense only if it is limited to tile-drained acres. Additionally, results indicate that removing tile drainage in the watersheds would be completely cost-ineffective. Furthermore, when land was targeted on an abatement-per-acre basis, it was optimal to retire land and remove drainage; when land was targeted on a cost-per-pound-of-abatement basis, however, it was optimal to manage nutrient application at lower abatement levels, and to achieve greater abatement by retiring non-tile-drained land. Although retirement of tile-drained acres can be an effective means of abatement, it is not cost-effective, because tile-drained land is prime agricultural land, and the environmental gains from removing it from production do not outweigh the losses in agricultural returns.
590 $a School code: 0130.
650 4 $a Economics, Agricultural. $3 626648
690 $a 0503
710 2 0 $a University of Minnesota. $3 676231
773 0 $t Dissertation Abstracts International $g 66-03A.
790 1 0 $a Runge, C. Ford, $e advisor
790 $a 0130
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3167706