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基于系统周界的观控模型提出了人类活动影响的侵蚀分析方法,通过系统模型输出、内部状态以及输入之间的关系,导出了系统输出与输入、系统内部状态和人类活动影响强度的关系式。应用于陕西省榆林市子洲县西北部的小河沟流域的石畔峁坝坝控流域系统,以坝控流域上的四个侵蚀性降雨指标为输入集,以四种水保措施为内部状态集,以淤地坝层淤积量为输出集,并与传统系统分析方法进行了比较。结果表明:提出的模型方法较为合理,能更准确地分析出人类活动的变化趋势和系统内部状态对坝控流域土壤侵蚀的影响,从而说明了坝控流域系统的输出受到输入、内部状态以及人类活动的多重影响,拓宽了人类活动影响下的黄土高原土壤侵蚀研究思路。
Based on the observation and control model of the system perimeter, the eutrophication analysis method of human activities is proposed. Through the relationship between system model output, internal state and input, the relationship between system output and input, system internal state and human influence intensity is derived . It is applied to the rocky dam dam control basin system in Xiahegou watershed in the northwest of Zizhou County, Yulin City, Shaanxi Province. Taking the four erosive rainfall indicators in the dam control basin as the input set and four kinds of water conservation measures as the internal state Set, to silt dam siltation as output set, and compared with the traditional method of system analysis. The results show that the proposed model method is more reasonable and can analyze the trend of human activities and the internal state of the system more accurately. The results show that the output of the dam-controlled river basin system is affected by the input, the internal state, The multiple impacts of activities have broadened the research ideas on soil erosion in the Loess Plateau under the influence of human activities.