SGER: Experimental Flooding at Bosque del Apache National Wildlife Refuge, Rio Grande, New Mexico

SGER：新墨西哥州格兰德河博斯克德尔阿帕奇国家野生动物保护区的实验性洪水

• 批准号: 9414767
• 负责人: Herbert Valett
• 金额: $ 4.5万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-01 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9414767&HistoricalAwards=false
• 关键词: SGER; Experimental; Flooding; Bosque; del

9414767 Valett Flow regulation for the purposes of power generation, recreation and navigation has resulted in the engineered separation of rivers, floodplains and associated alluvial aquifers. the result has been a marked decrease in native riparian vegetation and increased accumulations of organic material on the forest floor. there is considerable evidence that overland flooding and associated scouring of floodplain sediments are necessary components for the successful recruitment of native riparian vegetation, but less is known about the effects of floods on the ground water of riparian zones and the types of interactions and processes that occur in the interstitial environment during floods. This proposal will assess the use of "manipulative flooding" as a restoration tool aimed at reestablishing historical conditions and processes in the riparian forest, or bosque, along the Rio Grande at the Bosque del Apache National Wildlife refuge, New Mexico. %%% Controlled flooding of 20 has plots of the bosque will provide opportunities to investigate groundwater responses and the rates of respiration and nitrogen transformation in the temporarily saturated rooting zone and on the forest floor. Additionally, we will investigate the effects of flooding of the carbon and nitrogen content of riparian vegetation. Funds requested in this proposal will support metabolic and biogeochemical studies of the initial flooding of the riparian zone following 30 years of flow regulation.

9414767 Valett 出于发电、娱乐和航行目的的流量调节导致了河流、洪泛区和相关冲积含水层的工程分离。 其结果是原生河岸植被明显减少，森林地面有机物质积累增加。 有大量证据表明，陆上洪水和相关的洪泛区沉积物冲刷是成功恢复本地河岸植被的必要组成部分，但人们对洪水对河岸地区地下水的影响以及洪水期间间质环境中发生的相互作用和过程的类型知之甚少。 该提案将评估“操纵性洪水”作为恢复工具的使用情况，旨在重建新墨西哥州博斯克德尔阿帕奇国家野生动物保护区沿格兰德河的河岸森林或博斯克的历史条件和过程。 %%% 20 公顷森林地块的受控洪水将为调查暂时饱和的生根区和森林地面的地下水响应以及呼吸和氮转化速率提供机会。 此外，我们还将研究洪水对河岸植被碳和氮含量的影响。 该提案中要求的资金将支持对经过 30 年流量调节后河岸带初始洪水的代谢和生物地球化学研究。