Using wetlands for water quality improvement in agricultural watersheds; the importance of a watershed scale approach
Using wetlands for water quality improvement in agricultural watersheds; the importance of a watershed scale approach
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DOI：
10.2166/wst.2001.0880
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发表时间：
2001-01-01
影响因子：
2.7
通讯作者：
Crumpton, WG
中科院分区：
文献类型：
--
作者：
Crumpton, WG
自1960年代中期以来，化肥和杀虫剂的农业应用急剧增加，地面和地下水的农业化学品污染已成为严重的环境问题。自20世纪80年代中期以来，各种州和联邦计划已被用于促进湿地恢复，这些持续的努力为农业流域的水质改善提供了独特的机会。然而，湿地净化主要是出于对水禽栖息地丧失的关注，模型模拟表明，湿地净化常用的选址标准可能不足以满足水质要求。这并没有减少湿地在农业流域水质改善的承诺，而是强调需要流域尺度的湿地选址和设计方法。水质最好从流域的角度来看，流域规模的端点应明确考虑湿地恢复选址。
Agricultural applications of fertilizers and pesticides have increased dramatically since the middle 1960s, and agrochemical contamination of surface and groundwater has become a serious environmental concern. Since the mid-1980s, a variety of state and federal programs have been used to promote wetland restoration, and these continuing efforts provide a unique opportunity for water quality improvement in agricultural watersheds. However, wetland restorations have been motivated primarily by concern over waterfowl habitat loss, and model simulations suggest that commonly used site selection criteria for wetland restorations may be inadequate for water quality purposes. This does not lessen the promise of wetlands for water quality improvement in agricultural watersheds, but rather emphasizes the need for watershed scale approaches to wetland siting and design. Water quality is best viewed from a watershed perspective, and watershed scale endpoints should be explicitly considered in site selection for wetland restoration.