艾尔湖盆地景观:创造河流多样性的流域尺度背景

IF 0.8 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES
G. Wakelin-King
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引用次数: 3

摘要

艾尔湖流域(LEB)河流是重要的河流,但研究不足。该研究将已发表的信息和新发现的信息整合为系统的地貌概况,将LEB划分为9个景观带:具有相对高能河流的盆地边缘高地;岩石边缘,山前有短河流和洪水;西部河流,以新构造运动和河流捕获著称;低洼的北部平原排水和洪水;中原沙丘;河道乡村-垂直丘陵,裂缝-粘土夹层和山谷宏观河道;沟道国家-石质圆顶,岩质或砂质夹层和复杂的大沟道;湖泊和沙丘由含盐地下水维持;以及大湖中的游乐场。区域边界GIS数据集可用。LEB河流显示出多样性和独特性,表明需要与当地相关的管理和监测知识。河流地貌组合包括沙床河流、纵向洪泛平原、洪泛平原、低角度冲积扇和三种类型的水坑中共存的分支和吻合系统的宏观河道。通道可能不连续或不存在;洪泛平原可以主导水流的传输。山坡产生径流的能力是不均匀的,而排水网络可能具有低到高的一体化程度。对管理的影响包括河内陆地生态系统和“不完整”的排水网络的重要性,以及一些形态测量方法的不适用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Landscapes of the Lake Eyre Basin: the catchment-scale context that creates fluvial diversity
ABSTRACT Lake Eyre Basin (LEB) rivers are important but under-researched. This study integrates published and new information into a systematic geomorphological overview, subdividing the LEB into nine landscape zones: basin-margin Uplands with relatively high-energy rivers; Rocky Fringe, piedmont with short rivers and floodouts; Western Rivers, notable for neotectonism and stream capture; low-relief Northern Plains drainages and floodouts; Central Plains dunefield; Channel Country-Vertic Downs, cracking-clay interfluves and valley macrochannels; Channel Country-Stony Domes, rocky or sandy interfluves and complex macrochannels; Lakes & Dunes maintained by saline groundwater; and playas in the Mega-lakes. Zone boundary GIS datasets are available. LEB rivers are shown to be diverse and distinctive, indicating a need for locally relevant knowledge in management and monitoring. Fluvial landform suites include sand-bed rivers, macrochannels hosting coexisting anabranching and anastomosing systems in vertic floodplains, floodouts, low-angle alluvial fans, and three types of waterhole. Channels may be discontinuous or not present; floodplains can dominate flow transmission. Contributing hillslopes are heterogenous in their capacity to generate runoff, while drainage networks may have low to high degrees of integration. Management implications include the importance of in-river terrestrial ecosystems and “patchy” drainage networks, and the inapplicability of some morphometric practices.
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来源期刊
CiteScore
1.40
自引率
12.50%
发文量
17
审稿时长
>12 weeks
期刊介绍: Published since 1880, the Transactions of the Royal Society of South Australia is a multidisciplinary journal that aims to publish high quality, peer-reviewed papers of particular relevance to Australasia. There is a particular focus on natural history topics such as: botany, zoology, geology, geomorphology, palaeontology, meteorology, geophysics, biophysics, soil science and environmental science, and environmental health. However, the journal is not restricted to these fields, with papers concerning epidemiology, ethnology, anthropology, linguistics, and the history of science and exploration also welcomed. Submissions are welcome from all authors, and membership of the Royal Society of South Australia is not required. The following types of manuscripts are welcome: Reviews, Original Research Papers, History of Science and Exploration, Brief Communications, Obituaries.
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