■在高强度管理中的斜杠处置-燃烧森林-桉树×尾叶人工林加速了土壤退化。
■斜线处置是一个促成因素,但是它在降雨径流和土壤侵蚀之间的相关性中的特定作用仍然难以捉摸。
■他的研究调查了人工林中不同斜杠处理方法的降雨径流和土壤侵蚀抗性特征。
■三种斜线处理方法,即燃烧森林(BF),离开(MA),并均匀传播(SE),已建立。进行了降雨的现场模拟实验,并采用路径分析。
■研究结果表明,渗透特性和SE产生的降雨-径流时间增加了约10~20%,100%,80%,分别,与BF和MA相比。失水,土壤流失和养分流失显著减少了62.23%和61.56%,69.06%和49.55%,与MA相比,SE和BF分别为58.8%和65.42%。路径分析表明,与BF和MA不同,SE土壤水分性质与降雨径流因子之间的相关性减弱,同时考虑到SE的泥沙占沉积物成分的比例较低(75.31%),它稳定了土壤结构。
■因此,SE通过减少降雨径流和通过改善水分特性增强土壤的抗侵蚀能力来减轻侵蚀力。使其成为可行的斜线处理。这项工作提供了对人工林的土壤侵蚀特征的详细描述,包括水,土壤,以及降雨径流造成的养分流失,以及不同斜线处理对土壤侵蚀的影响。这些发现为高强度桉树×尾叶树种植园的管理提供了宝贵的见解。
UNASSIGNED: The slash disposal-burning forest-in high-intensity management Eucalyptus grandis × urophylla plantation has accelerated soil degradation.
UNASSIGNED: Slash disposals is a contributing factor, but its specific role in the correlation between rainfall-runoff and soil erosion remains elusive.
UNASSIGNED: his study investigated the characteristics of rainfall-runoff and soil erosion resistance in different methods of slash disposals in plantation.
UNASSIGNED: Three methods of slash disposal, namely burning forest (BF), moving away (MA), and spreading evenly (SE), were established. A field simulation experiment of rainfall was conducted, and path analysis was used.
UNASSIGNED: The findings revealed that the water holding, infiltrating properties and the time the rainfall-runoff generated of SE were increased by approximately 10∼20 %, 100 %, and 80 %, respectively, compared with BF and MA. Water loss, soil loss and nutrient loss were significantly reduced by 62.23 % and 61.56 %, 69.06 % and 49.55 %, and 58.8 % and 65.42 % in SE and BF compared to MA. Path analysis suggested that different from BF and MA, the correlation between soil water properties and rainfall-runoff factors in SE was weakened, simultaneously considering the result that SE had the lower proportions of silt for sediment component (75.31 %), it stabilized the soil structure.
UNASSIGNED: Consequently, SE mitigated the erosion force by reducing rainfall-runoff and enhancing the anti-erosion of soil through improved water properties, making it a viable slash disposal. This work provides a detailed description of the soil erosion characteristics of plantation, including water, soil, and nutrient losses caused by rainfall-runoff, as well as the soil anti-erosion due to different slash disposals. These findings offer valuable insights for the management of high-intensity Eucalyptus grandis × urophylla plantations.