Similarity of stream width distributions across headwater systems.
Similarity of stream width distributions across headwater systems.
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DOI：
10.1038/s41467-018-02991-w
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发表时间：
2018-02-09
影响因子：
16.6
通讯作者：
Gleason CJ
中科院分区：
文献类型：
--
作者：
Allen GH;Pavelsky TM;Barefoot EA;Lamb MP;Butman D;Tashie A;Gleason CJ
河流的形态和丰度控制着河流、地下水和大气之间的水力和生物地球化学交换的速率。在大型河流系统中，河流宽度和丰度之间的关系是分形的，因此从比例上讲，狭窄的河流比宽阔的河流更常见。然而，在许多生物地球化学反应最快的水源系统中，河流宽度和丰度之间的关系是未知的。为了限制这种不确定性，我们调查了北美和新西兰的几个源头河流网络中的溪流水力形态(湿润的宽度和长度)。在这里，我们发现河流宽度的对数正态统计分布非常一致，包括最丰富的河流宽度为32 ± 7 cm，与流量或地形条件无关。我们提出了一个水形态模型，可以用来更准确地估计河流的水形态，这对理解河流网络的水力、生态和生物地球化学功能具有重要影响。河流的形态和丰度控制着河流、地下水和大气之间的水力和生物地球化学交换的速率。在这里，作者表明，在源头集水区内，水系水力形态是可以预测的，这意味着对水系-大气气体交换的估计。
The morphology and abundance of streams control the rates of hydraulic and biogeochemical exchange between streams, groundwater, and the atmosphere. In large river systems, the relationship between river width and abundance is fractal, such that narrow rivers are proportionally more common than wider rivers. However, in headwater systems, where many biogeochemical reactions are most rapid, the relationship between stream width and abundance is unknown. To constrain this uncertainty, we surveyed stream hydromorphology (wetted width and length) in several headwater stream networks across North America and New Zealand. Here, we find a strikingly consistent lognormal statistical distribution of stream width, including a characteristic most abundant stream width of 32 ± 7 cm independent of discharge or physiographic conditions. We propose a hydromorphic model that can be used to more accurately estimate the hydromorphology of streams, with significant impact on the understanding of the hydraulic, ecological, and biogeochemical functions of stream networks. The morphology and abundance of streams control the rates of hydraulic and biogeochemical exchange between streams, groundwater and the atmosphere. Here, the authors show that stream hydromorphology is predictable within headwater catchments with implications for stream-atmosphere gas exchange estimates.
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影响因子：
5.4
作者：
Ferguson, Rob
通讯作者：
Ferguson, Rob
影响因子：
4.5
作者：
FINDLAY, S
通讯作者：
FINDLAY, S
DOI：
10.1111/j.1752-1688.2004.tb01576.x
发表时间：
2004-10-01
影响因子：
2.4
作者：
Anderson, RJ;Bledsoe, BR;Hession, WC
通讯作者：
Hession, WC
DOI：
10.1073/pnas.1317606111
发表时间：
2014-04-01
影响因子：
11.1
作者：
Gleason, Colin J.;Smith, Laurence C.
通讯作者：
Smith, Laurence C.
影响因子：
3.1
作者：
Downing, J. A.;Cole, J. J.;Tranvik, L. J.
通讯作者：
Tranvik, L. J.