《Wetlands》杂志刊登“热带风暴驱动下的水文规律及在德克萨斯州大草原的应用”

作者：David J. Cooper, Joel I. Wagner

刊物：《Wetlands》,2013年12月

关键词：大米草属；氧化还原反应；热带风暴；洼塘；德克萨斯州

摘要：我们测量了南德克萨斯州格兰德河的三个沿海牧场站点两年的日降水量、降水持续时间以及土壤氧化还原电位。该地区历史上以来主要被海湾带状草地、米草属所占据，大部分地区被开垦为农业区，米草没有被开垦干扰。对格兰德河的调控已经消除了洪水灾害并切断研究区同河流的联系，本项目的目标是利用水位和土壤氧化还原电位的连续测量数据，以确定研究区是否有湿地水文情势特征。发现对于刚形成的缺氧土壤，至少持续两周，只有随后而来的飓风或者热带风并且在1至3天内产生了至少15厘米的降雨，才能开成洼塘。20世纪，这种程度的暴风雨只是4年内才发生一次，这项研究表明由于河流的调控导致研究区丧失了湿地水文特征，不过仍然可以通过人工种植去重建湿地草原物种。

Authors: David J. Cooper, Joel I. Wagner

Journal: Wetland, December 2013

Key words:Spartinaspartinae;Redoxpotential;Tropicalstorm;Ponding;Texas

Abstract: We measured daily precipitation, duration of ponding and soil redox potential for 2 years in three coastal prairie sites near the mouth of the Rio Grande in south Texas. The area historically was dominated by gulf cordgrass, Spartinaspartinae. Much of the area was plowed for agriculture and Spartina has not recolonized disturbed sites. Regulation of the Rio Grande has eliminated flooding and disconnected the study area from the river. The goal of this project was to use continuous measures of water levels and soil redox potential to determine whether the study areas have a wetland hydrologic regime. Anoxic soils formed and persisted for at least 2 weeks only following hurricanes or large tropical storms that produced at least 15 cm of precipitation over 1–3 days and created ponding. Over the past century storms of this magnitude occurred only 1 out of 4 years. This study determined that the study sites do not support wetland hydrologic regimes due to river regulation, however reestablishment of the dominant wet prairie species is possible through planting.

原文链接：http://link.springer.com/article/10.1007/s13157-013-0459-0

翻译：刘金轲；审核：翟正丽