In recent decades, landslide disasters in the Himalayas, as in other mountain regions, are widely reported to have increased. While some studies have suggested a link to increasing heavy rainfall under a warmer climate, others pointed to anthropogenic influences on slope stability, and increasing exposure of people and assets located in harm’s way. A lack of sufficiently high-resolution regional landslide inventories, both spatially and temporally, has prevented any robust consensus so far. Focusing on Far-Western Nepal, we draw on remote sensing techniques to create a regional inventory of 26,350 single landslide events, of which 8778 date to the period 1992–2018. These events serve as a basis for the analyses of landslide frequency relationships and trends in relation to precipitation and temperature datasets. Results show a strong correlation between the annual number of shallow landslides and the accumulated monsoon precipitation (r = 0.74). Furthermore, warm and dry monsoons followed by especially rainy monsoons produce the highest incidence of shallow landslides (r = 0.77). However, we find strong spatial variability in the strength of these relationships, which is linked to recent demographic development in the region. This highlights the role of anthropogenic drivers, and in particular road cutting and land-use change, in amplifying the seasonal monsoon influence on slope stability. In parallel, the absence of any long-term trends in landslide activity, despite widely reported increase in landslide disasters, points strongly to increasing exposure of people and infrastructure as the main driver of landslide disasters in this region of Nepal. By contrast, no climate change signal is evident from the data.

近几十年来，与其他山区一样，喜马拉雅山的滑坡灾害据报有所增加。尽管一些研究表明在温暖的气候下增加降雨会增加联系，但其他研究则指出人为因素对边坡稳定性产生影响，并增加了以危害方式存在的人员和资产的暴露。缺乏足够高分辨率的区域性滑坡清单，无论在空间上还是时间上，迄今为止都未能达成任何有力的共识。着眼于尼泊尔西部，我们利用遥感技术创建了26,350次单次滑坡事件的区域清单，其中8778次发生在1992-2018年期间。这些事件是分析滑坡频率关系和与降水量和温度数据集有关的趋势的基础。r = 0.74）。此外，温暖和干燥的季风之后是特别是雨季风，产生浅层滑坡的发生率最高（r = 0.77）。但是，我们发现这些关系的强度存在很大的空间变异性，这与该地区最近的人口发展有关。这突显了人为驱动因素的作用，尤其是道路的切割和土地利用的变化，在扩大季节性季风对边坡稳定性的影响方面。同时，尽管广泛报道了滑坡灾害的增加，但滑坡活动没有任何长期趋势，这强烈表明作为尼泊尔滑坡灾害主要驱动力的人们和基础设施的暴露增加。相反，从数据中没有明显的气候变化信号。