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Self-Organizing Map Network-Based Soil and Water Conservation Partitioning for Small Watersheds: Case Study Conducted in Xiaoyang Watershed, China

机译：小流域的自组织地图基于地图的水土保持分区：案例研究在孝洋流域进行，中国

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摘要

Soil and water conservation partitioning (SWCP) considers complex environmental statutes and development demands and serves as a scientific basis for conducting soil erosion management and practice. However, few studies have researched partitioning in small watersheds ( 50 km 2 ), and guidelines for enabling region-specific measures are lacking. In this study, the Xiaoyang watershed located in the red soil region of southern China was selected as a representative small watershed in which to conduct partitioning. The pressure–state–response (PSR) model was used as a framework for establishing an indicator system that included soil erosion sensitivity, the soil erosion condition, and ecosystem services. With three soil and water conservation variables as the input layer, a one-dimensional self-organizing map was applied to identify clusters in the small watershed. The silhouette width was evaluated to determine the optimal number of regions. Based on the associated results, the Xiaoyang watershed was divided into five regions accounting for 82%, 9%, 8%, 2%, and 1% of the total area, respectively. This study provides a framework on which region-specific soil erosion measures can be planned, and it also provides a partitioning method that can be employed in other areas.
机译：水土保持分区（SWCP）考虑复杂的环境法规和发展需求，并作为进行土壤侵蚀管理和实践的科学依据。然而，很少有研究在小流域（<50公里2）中进行分区，缺乏能够实现特定区域措施的指导方针。在这项研究中，位于中国南部红土地区的小康流域被选为一个代表性的小流域，用于开展分区。压力 - 状态响应（PSR）模型用作建立指示器系统的框架，包括土壤侵蚀敏感性，土壤侵蚀条件和生态系统服务。用三种土壤和水资源保护变量作为输入层，应用一维自组织地图来识别小流域中的簇。评估轮廓宽度以确定最佳地区。根据相关结果，小康流域分为五个地区，分别占总面积的82％，9％，8％，2％和1％。本研究提供了一种框架，可以计划在哪种区域特定的土壤侵蚀措施，并且还提供一种可以在其他区域采用的分区方法。

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