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首页> 外文期刊>Catena: An Interdisciplinary Journal of Soil Science Hydrology-Geomorphology Focusing on Geoecology and Landscape Evolution >Soil erosion and hydrology of the western Mediterranean badlands throughout rainfall simulation experiments: a review. (Special Issue: Updating badlands research.)
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Soil erosion and hydrology of the western Mediterranean badlands throughout rainfall simulation experiments: a review. (Special Issue: Updating badlands research.)

机译：在整个降雨模拟实验中，地中海西部荒地的土壤侵蚀和水文状况：综述。 （特刊：更新荒地研究。）

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摘要

Rainfall simulation experiments are widely used in geomorphological research in badland areas. This technique contributed significantly to our understanding of badland geomorphology in the Mediterranean belt. Due to the different types of simulated rainfall applied and the variable size of the plots a review of the State-of-the-Art is necessary. This study confirmed that rainfall simulations are well suited to (i) analyse runoff-infiltration processes and sediment detachment within badlands, and (ii) to establish the factors determining the hydrological and erosion response at interrill scale in badland areas. The hydrological response of badlands is characterized by rapid responses, low to moderate infiltration rates (ranging from close to 0 to 55 mm h-1) and high runoff coefficients (i.e. >60%). Positive relationships are observed between antecedent soil moisture content and rainfall intensity on the one hand, and runoff coefficients on the other. Sediment concentration and soil detachment rates are among the highest measured on the Mediterranean region (i.e. up to 84.8 g l-1 and 4722.4 g m-2 h-1). Results show that rainfall intensity, runoff coefficient, and slope angle have a positive influence on sediment concentration and sediment detachment; in the case of rock fragment cover, its influence is variable according to the soil cover percentage. Rainfall simulations increase our understanding of the temporal and spatial variability of the soil erosion processes. However, rainfall simulation provides mostly qualitative rather than quantitative information because of the small plot size and the simulated rainfall characteristics due to facility for repeating experiments and recording a high quantity of data in short time. However, this method allows the comparison amongst different environments and soil conditions as the rainfall properties can be reproduced.
机译：降雨模拟实验被广泛用于荒地的地貌研究。这项技术为我们对地中海带荒地地貌的理解做出了重要贡献。由于所应用的模拟降雨类型不同，且样地大小不一，因此有必要对最新技术进行回顾。这项研究证实，降雨模拟非常适合（i）分析荒地中的径流入渗过程和沉积物分离，以及（ii）建立决定荒地间岩间尺度水文和侵蚀响应的因素。荒地的水文响应特征是响应速度快，入渗率低至中等（范围从0到55 mm h -1 ）和高径流系数（即> 60％）。一方面观察到前期土壤含水量与降雨强度之间存在正相关关系，另一方面观察到径流系数之间存在正相关关系。沉积物浓度和土壤脱离速率是地中海地区测得的最高值（即高达84.8 gl -1 和4722.4 gm -2 h -1 ）。结果表明，降雨强度，径流系数和坡度对泥沙浓度和泥沙流失有积极影响。对于岩石碎片覆盖，其影响会根据土壤覆盖率而变化。降雨模拟增加了我们对土壤侵蚀过程的时空变化的理解。但是，由于样地面积小，并且由于可以在短时间内进行重复实验和记录大量数据而模拟降雨特征，因此降雨模拟主要提供定性而非定量信息。但是，这种方法可以在不同的环境和土壤条件之间进行比较，因为可以再现降雨特性。

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