Discussing the spatiotemporal change characteristics of slope cultivated land use transition influenced by various factors in karst trough valley area is of great importance and can help in regional food security and ecological restoration. High-resolution images (0.53 m) of 2005, 2010, and 2017 and a digital elevation model as the data source were verified through a field survey. We calculated the relevant dynamic change index and used the transfer matrix and kernel density estimation to reveal the spatial temporal transition characteristics and spatial agglomeration of slope cultivated land in the trough valley area of Guizhou Province, China. Results show that the utilization of slope cultivated land is mainly dominated by gentle and oblique slope cultivated lands. From 2005 to 2017, the dynamic degree changes of slope cultivated land show their own characteristics and differences. The transition of slope cultivated land is mainly based on rural residential land, town land, fruit land, tea land, shrubland, grassland, and forested land, the transfer space is distributed in the flat position of three trough valleys, and the change in density agglomeration during 2010–2017 is higher than that during 2005–2010. Six change modes are found in the temporal and spatial variations of slope cultivated land. The difference distribution of natural factors in elevation, hydrogeology, and soil type directly leads to the significant difference in the spatial and temporal distributions of slope cultivated land. The utilization function of slope cultivated land shows diversification with the improvement of social economy and the implementation of human policies in trough valley areas.

中文翻译：

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贵州省喀斯特沟谷区坡耕地过渡时空变化特征及驱动机制

探讨喀斯特谷地地区坡耕地利用变化的时空变化特征具有重要意义，有助于区域粮食安全和生态恢复。通过现场调查，验证了2005年，2010年和2017年的高分辨率图像（0.53 m）以及作为数据源的数字高程模型。我们计算了相关的动态变化指数，并使用传递矩阵和核密度估计方法揭示了贵州省谷地地区坡耕地的时空过渡特征和空间集聚。结果表明，坡耕地的利用主要以平坡和斜坡耕地为主。从2005年到2017年，坡耕地动态度变化表现出自身的特点和差异。坡耕地的过渡主要是基于农村居民点，城镇土地，果园地，茶园地，灌木丛，草地和林地，其转移空间分布在三个低谷的平坦位置，且密度变化2010-2017年的集聚高于2005-2010年的集聚。在坡耕地的时空变化中发现了六种变化模式。海拔，水文地质和土壤类型等自然因素的差异分布直接导致坡耕地的时空分布存在明显差异。