Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.gloenvcha.2018.02.017 |
Phosphorus flows and legacy accumulation in an animal-dominated agricultural region from 1925 to 2012 | |
Wironen, Michael B.1,2; Bennett, Elena M.3,4; Erickson, Jon D.1,2 | |
2018-05-01 | |
发表期刊 | GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS |
ISSN | 0959-3780 |
EISSN | 1872-9495 |
出版年 | 2018 |
卷号 | 50页码:88-99 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada |
英文摘要 | Phosphorus (P) is a scarce but critical input for agriculture, yet its overuse can lead to water quality degradation. Most P applied as fertilizer and manure binds to soils, accumulating over time, constituting a legacy source with implications for mitigating nutrient pollution. To investigate how the flows and balance of P evolved over a period of rapidly changing technology, agricultural practices, and land cover, we modeled P flows in Vermont's dairy-dominated agricultural system at county- and state-levels from 1925 to 2012. An important dairy exporter, Vermont faces water quality challenges complicated by a mismatch between the scale of the market and that of policymaking, a common occurrence in export-oriented agricultural regions. Over the period analyzed, agricultural soils accumulated at > 1000 tonnes of P annually, accruing a legacy stock > 230,000 tonnes. The peak surplus of 4439 tonnes occurred in 1950, declining to 1493 tonnes per annum in 2012. Legacy P accumulation at the state-level ranged from < 1 to > 16 kg ha(-1), depending on year and measurement method. The decline in total P surplus reflects an 82% decline in fertilizer use that was partly offset by an increase in animal feed imports, the largest source of P entering Vermont since 1982. Despite declining inputs, milk output doubled, evidence of increased P use efficiency. Simultaneously, animal unit density increased by > 250%, enabled by rising feed imports. While feed is imported and milk exported, manure remains in Vermont; hence, Vermont soils continue to accrue legacy P at rates > 5 kg ha(-1), undermining efforts to reduce P runoff and achieve water quality targets. We discuss the governance, management, and policy implications, outlining opportunities to improve input accountability to address the persistent P imbalance. We highlight constraints facing regional policymakers due to increased embeddedness in commodity trade networks. |
英文关键词 | Phosphorus Material flow analysis Nonpoint source pollution Agriculture Nutrient management Legacy P |
领域 | 气候变化 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000436223800007 |
WOS关键词 | SUSTAINABLE NUTRIENT MANAGEMENT ; NEW-YORK-STATE ; SOIL-PHOSPHORUS ; DAIRY FARMS ; ENVIRONMENTAL IMPACTS ; FOOD-PRODUCTION ; MASS BALANCES ; WATER-QUALITY ; LAND ; NITROGEN |
WOS类目 | Environmental Sciences ; Environmental Studies ; Geography |
WOS研究方向 | Environmental Sciences & Ecology ; Geography |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38030 |
专题 | 气候变化 |
作者单位 | 1.Univ Vermont, Gund Inst Environm, Johnson House,617 Main St, Burlington, VT 05405 USA; 2.Univ Vermont, Rubenstein Sch Environm & Nat Resources, Aiken Ctr, 81 Carrigan Dr, Burlington, VT 05405 USA; 3.McGill Univ, McGill Sch Environm, 21111 Lakeshore Rd, Ste Anne De Bellevue, PQ H9X 3V9, Canada; 4.McGill Univ, Dept Nat Resource Sci, 21111 Lakeshore Rd, Ste Anne De Bellevue, PQ H9X 3V9, Canada |
推荐引用方式 GB/T 7714 | Wironen, Michael B.,Bennett, Elena M.,Erickson, Jon D.. Phosphorus flows and legacy accumulation in an animal-dominated agricultural region from 1925 to 2012[J]. GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS,2018,50:88-99. |
APA | Wironen, Michael B.,Bennett, Elena M.,&Erickson, Jon D..(2018).Phosphorus flows and legacy accumulation in an animal-dominated agricultural region from 1925 to 2012.GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS,50,88-99. |
MLA | Wironen, Michael B.,et al."Phosphorus flows and legacy accumulation in an animal-dominated agricultural region from 1925 to 2012".GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS 50(2018):88-99. |
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