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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Hillslope response under variable microclimate
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Hillslope response under variable microclimate

机译：可变微气体下的山坡响应

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Solar radiation-controlled microclimatic variation has been considered a major force on hillslope evolution via feedback among geomorphology, vegetation, soil and hydrology. In this study, we investigate the influence of solar radiation on hillslope dynamics on Santa Catalina Island, CA by comparing hillslope morphology and frequency-magnitude relationships of shallow landslides, rills and gullies on slopes receiving low annual solar radiation (LSR) and high annual solar radiation (HSR), which were found equivalent to north- and south-facing slopes, respectively. LSR slopes on Santa Catalina Island were found more vegetated compared to HSR slopes. LiDAR elevation-derived hillslope morphology showed LSR slopes steeper, rougher and more concave than HSR slopes. Similarly, frequency-magnitude plots showed larger relative frequency of high-magnitude shallow landslides, rills and gullies on LSR slopes, and low-magnitude shallow landslides, rills and gullies on HSR slopes. We argue that the morphology, mass movement and erosion characteristics of LSR and HSR slopes reflect the process-response of microclimate-controlled variation in type and density of vegetation cover, soil physical properties - including moisture, texture, structure, infiltration and erodibility - and surface and subsurface hydrology. (c) 2019 John Wiley & Sons, Ltd.
机译：通过地貌，植被，土壤和水文中的反馈，太阳辐射控制的微凸型变异被认为是山坡演化的主要力量。在这项研究中，我们通过比较浅山坡，岩石和沟渠对收到低年度太阳辐射（LSR）和高年度太阳能的坡度坡地形态和频率幅度关系，调查太阳辐射对Santa Catalina Island，CA山坡动力学的影响辐射（HSR）分别相当于北方和面向朝南的斜坡。与HSR斜坡相比，Santa Catalina Island上的LSR斜坡被发现更多植被。激光雷达高程衍生的山坡形态显示LSR斜坡陡峭，令人满意，更凹陷而不是HSR斜坡。类似地，频率幅度图显示出LSR斜坡上的高次浅滑坡，粗糙和沟渠的相对频率，以及HSR斜坡上的低次浅滑坡，瑞氏垫和沟渠。我们认为LSR和HSR斜坡的形态，批量运动和腐蚀特性反映了植被覆盖的单体控制变化的过程 - 响应，土壤物理性质 - 包括水分，质地，结构，渗透和蚀刻 - 以及表面和地下水文。 （c）2019 John Wiley＆Sons，Ltd。

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