冀北辽河源自然保护区油松林火烧迹地土壤化学性质研究
发布时间：2018-10-13 07:52
【摘要】：以冀北辽河源自然保护区油松林火烧迹地为研究区,研究不同土壤深度(0~5cm、5~10cm、10~20cm)以及不同火强度(未火烧、轻度、中度、重度和极度)干扰下油松林土壤化学性质,对火烧迹地土壤的改良和油松林的恢复更新具有实践意义.研究结果表明:火烧1年后,土壤pH有所升高;土壤有机碳、全氮、全钾质量分数除在极度火强度下,其他火强度下都有所升高;磷和有效磷在过火土壤中的质量分数亦增加;土壤pH、有机碳、全氮、全钾、全磷和有效磷质量分数在土层垂直分布上的状况为表层土大于深层土.因此,火烧对土壤表层产生较大影响且强度合理的火干扰可以有效提高土壤肥力.
[Abstract]:The soil chemical properties of Pinus tabulaeformis forest in Liaohe Source Nature Reserve of North Hebei Province were studied under different soil depths (0 ~ 5 cm ~ (5) ~ 5 ~ (10) cm ~ (10) ~ (10) cm ~ (10) ~ (20 cm) and different fire intensity (not burned, mild, moderate, severe and extreme). It has practical significance for soil improvement and restoration of Pinus tabulaeformis forest. The results showed that the pH of soil increased a year after burning, the mass fraction of organic carbon, total nitrogen, total potassium increased under the extreme fire intensity, and the mass fraction of phosphorus and available phosphorus also increased in the overheated soil. The vertical distribution of soil pH, organic carbon, total nitrogen, total potassium, total phosphorus and available phosphorus in the soil layer shows that the surface soil is larger than the deep soil. Therefore, fire burning has a great influence on the soil surface layer and the fire disturbance with reasonable intensity can effectively improve soil fertility.
【作者单位】： 北京林业大学林学院;
【基金】：国家林业科学技术推广项目 云南省森林火灾中长期多时空尺度预测技术与示范(2015-04)
【分类号】：S714.2;S762.1
[Abstract]:The soil chemical properties of Pinus tabulaeformis forest in Liaohe Source Nature Reserve of North Hebei Province were studied under different soil depths (0 ~ 5 cm ~ (5) ~ 5 ~ (10) cm ~ (10) ~ (10) cm ~ (10) ~ (20 cm) and different fire intensity (not burned, mild, moderate, severe and extreme). It has practical significance for soil improvement and restoration of Pinus tabulaeformis forest. The results showed that the pH of soil increased a year after burning, the mass fraction of organic carbon, total nitrogen, total potassium increased under the extreme fire intensity, and the mass fraction of phosphorus and available phosphorus also increased in the overheated soil. The vertical distribution of soil pH, organic carbon, total nitrogen, total potassium, total phosphorus and available phosphorus in the soil layer shows that the surface soil is larger than the deep soil. Therefore, fire burning has a great influence on the soil surface layer and the fire disturbance with reasonable intensity can effectively improve soil fertility.
【作者单位】： 北京林业大学林学院;
【基金】：国家林业科学技术推广项目 云南省森林火灾中长期多时空尺度预测技术与示范(2015-04)
【分类号】：S714.2;S762.1
【相似文献】
相关期刊论文 前10条
1 王彦武;廖超英;孙长忠;徐恒;;毛乌素沙地固沙林土壤化学性质差异[J];土壤通报;2009年04期
2 刘庆生;刘高焕;张敏;黄，
本文编号：2267845
本文链接：https://www.wllwen.com/kejilunwen/nykj/2267845.html
