Development of evaluation protocols on ecological functions of forested catchments for water quality conservation

森林流域水质保护生态功能评价方案的制定

• 批准号: 18380093
• 负责人: OHTE Nobuhito
• 金额: $ 11.6万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18380093/
• 关键词: 森林集水域; 生態系機能; 水質浄化機能; 安定同位体; 微生物生態学; 森林流域; 物質循環

Achievements of this study are summarized as follows:(1) By using newly applied novel method for simultaneous measurements of N and O stable isotope ratios of NO_3^- (microbial denitrifier method), contribution and its mechanisms of atmospherically derived NO_3^- in soil nitrogen dynamics were described.(2) Stable carbon isotope ratio of dissolved organic (DOC) of soil and groundwaters were extensively surveyed, and was able to clarify the mechanisms generating the dissolved organic matter in soil profiles.(3) A long-term simulation model for nitrogen and carbon discharge from forested watersheds were developed with combining a catchment-scale biogeochemical and hydrological models. Using this model, the ecosystem functions for water quality conservation can be evaluated based on the process model for nutrient cycle in the forest ecosystem.

本研究取得的成果如下：(1)采用新方法同时测定NO_3^-的N、O稳定同位素比值(微生物反硝化器法)，探讨大气源NO_3^-在土壤中的贡献及其机制。 (2)广泛调查了土壤和地下水中溶解性有机物(DOC)的稳定碳同位素比，阐明了土壤剖面中溶解性有机物的生成机制。(3)结合流域规模的生物地球化学和水文模型，开发了森林流域氮和碳排放的长期模拟模型。利用该模型，可以根据森林生态系统养分循环过程模型来评价生态系统的水质保持功能。

项目成果

Carbon isotope fractionation of dissolved inorganic carbon (DIC) due to outgassing of carbon dioxide from a headwater stream

• DOI: 10.1002/hyp.6833
• 发表时间: 2008-07-01
• 期刊: HYDROLOGICAL PROCESSES
• 影响因子: 3.2
• 作者: Doctor, Daniel H.;Kendall, Carol;Boyer, Elizabeth W.
• 通讯作者: Boyer, Elizabeth W.

Hydrologic effects on methane dynamics in riparian wetlands in a temperate forest catchment

• DOI: 10.1029/2006jg000240
• 发表时间: 2007-02-27
• 期刊: JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
• 影响因子: 3.7
• 作者: Itoh, Masayuki;Ohte, Nobuhito;Tani, Makoto
• 通讯作者: Tani, Makoto

Estimation of mean residence times of subsurface waters using seasonal variation in deuterium

利用氘的季节变化估计地下水的平均停留时间

• 发表时间: 2007
• 期刊: Hydrological Processes 21
• 作者: Kabeya N.;et. al.
• 通讯作者: et. al.

NO_3-流出の季節変動を制御する要因

NO_3-控制径流季节变化的因素

• 发表时间: 2010
• 期刊: 水利科学 (印刷中)
• 作者: 大手信人;徳地直子;藤本将光
• 通讯作者: 藤本将光

The effect of antecedent moisture condition on storm flow water sources in young forest headwater catchment

前期湿度条件对幼林源头流域暴雨水源的影响

• 发表时间: 2008
• 期刊: in From Headwaters to the Ocean : Hydrological Changes and Watershed Management, edited by M. Taniguchi, et al., Taylor & Francis Group, London
• 作者: Oda;T.;Y. Asano;N. Ohte;M. Suzuki
• 通讯作者: M. Suzuki