摘要
采用团聚体分形维数FD与土壤可蚀性K值指标,模拟不同降雨条件下马尾松人工林火烧迹地土壤各层可蚀性特征的变化。结果表明,火烧迹地的土壤有机质含量对土壤可蚀性的影响最大,即火烧迹地的恢复效果决定了土壤的抗水蚀性能。火烧迹地样地1、2和3的0~5 cm土层在FW、SW和WS 3种不同处理下K值均维持在0.031以下,10~20 cm土层在3种不同处理下K值相对于的0~5 cm和5~10 cm土层的K值范围明显升高,而火烧迹地样地1和样地2的10~20 cm土层抗蚀性相对最低。样地3和对照样地3’总体土壤可蚀性K值相对较低,即其抗蚀性相对较强。
The number of aggregate fractal dimension and soil erodibility K index were used to study the characteristics of soil erodibility of various layers of soil after fire under different simulated rainfall conditions. The results showed that the content of soil organic matter in burned sites has the greatest influence on soil erodibility, and the restoration effect of burned sites determines the soil’s water erosion resistance. Among them, the 0~5 cm soil layer of the burned plots 1, 2 and 3 maintained the K value below 0.031 under the three different treatments of FW,SW and WS, and compared with the 0~5 cm and 5~10 cm soil layers, the K value of the 10~20 cm soil layer under the three different treatments were significantly increased, and the 10~20 cm soil layer of the fired plots 1 and 2 had the lowest corrosion resistance. The overall soil erodibility K value of plot 3 and control plot 3’ were relatively lower, and their corrosion resistance were relatively stronger.
作者
彭徐剑
张水锋
张思玉
刘鑫
PENG Xu-jian;ZHANG Shui-feng;ZHANG Si-yu;Liu Xin(Nanjing Forest Police College,Jiangsu Nanjing 210023,China;Jiangsu Key Laboratory of Soil and Water Conserva-tion and Ecological Restoration,Jiangsu Nanjing Forestry Uni-versity,Jiangsu Nanjing 210037,China)
出处
《消防科学与技术》
CAS
北大核心
2022年第4期542-545,共4页
Fire Science and Technology
基金
国家自然科学基金项目(31872705,31600523)
江苏省基础研究计划(自然科学基金)-青年基金项目(BK20151009)
中央高校基本科研业务费专项资金项目(LGZD201604)。
