遥感图像显示动物饲养增加了下游溶解性活性磷

IF 2.6 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL
Andrew Meyer, Zach Raff, Sarah Porter
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引用次数: 0

摘要

在本文中,我们利用遥感图像来确定毛米河流域动物饲养场的位置和规模,该流域是伊利湖西部盆地的一个重要排水区,最近经历了严重的有害藻类大量繁殖。然后,我们估算了流域内动物饲养作业强度与地表水体中溶解性活性磷 (DRP) 浓度之间的关系,DRP 是导致藻类生长的最主要污染物。我们发现,上游动物饲养量增加相对较多的河段,其 DRP 浓度的增幅明显更高。流域中平均边际上游动物饲养作业会使下游的 DRP 浓度增加 10% 到 15%。与此相反,如果将分析范围限制在仅包括允许的经营活动,则系数估计值几乎为零,在统计上也不显著。我们的工作提供的证据表明,动物饲养作业强度的增加导致了水质问题。因此,对动物饲养作业进行许可和识别对于管理径流和正确归因地表水体中营养物质超标的原因非常重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Remotely sensed imagery reveals animal feeding operations increase downstream dissolved reactive phosphorus

In this paper, we use remotely sensed imagery to identify the location and size of animal feeding operations in the Maumee River Watershed, a key drainage area to Lake Erie's Western Basin, which has recently experienced severe harmful algal blooms. We then estimate the relationship between the intensity of animal feeding operations in the watershed and surface water body concentrations of dissolved reactive phosphorus (DRP), the pollutant most responsible for algal growth. We find that stream reaches with relatively larger increases in upstream animal feeding exposure experience significantly higher increases in concentrations of DRP. The average marginal upstream animal feeding operation in the watershed increases downstream DRP concentrations by between 10% and 15%. In contrast, when restricting the analysis to include only permitted operations, coefficient estimates are practically zero and statistically insignificant. Our work presents evidence that the increasing intensity of animal feeding operations contributes to water quality problems. Permitting and identification of animal feeding operations is therefore important for managing runoff and correctly attributing the causes of excess nutrients in surface water bodies.

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来源期刊
Journal of The American Water Resources Association
Journal of The American Water Resources Association 环境科学-地球科学综合
CiteScore
4.10
自引率
12.50%
发文量
100
审稿时长
3 months
期刊介绍: JAWRA seeks to be the preeminent scholarly publication on multidisciplinary water resources issues. JAWRA papers present ideas derived from multiple disciplines woven together to give insight into a critical water issue, or are based primarily upon a single discipline with important applications to other disciplines. Papers often cover the topics of recent AWRA conferences such as riparian ecology, geographic information systems, adaptive management, and water policy. JAWRA authors present work within their disciplinary fields to a broader audience. Our Associate Editors and reviewers reflect this diversity to ensure a knowledgeable and fair review of a broad range of topics. We particularly encourage submissions of papers which impart a ''take home message'' our readers can use.
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