应用生态学报2018，Vol.29Issue(1)：11-17,7.DOI:10.13287/j.1001-9332.201801.004
择伐干扰对小兴安岭阔叶红松林土壤磷吸附解吸的影响
Effects of selective cutting disturbance on soil phosphorus adsorption and desorption in a Korean pine and broad-leaved mixed forest in the Xiaoxing'an Mountains, China
摘要
Abstract
This study examined the characteristics of phosphorus (P) adsorption and desorption in surface soil (0-10 cm) of a secondary forest after selective cutting disturbance at three levels of intensity (low,medium,high) in order to reveal the effects of different disturbance intensities on soil P adsorption and desorption.Maximum adsorption amount (Qm),adsorption intensity factor,maximum buffer capacity,maximum desorption amount,average desorption rate and readily desorptable phosphorus were measured.Qm in the focal forests was 1383.93-1833.34 mg · kg-1,and Qm in forests with middle and high disturbance intensities was significantly higher than that in forests with low disturbance intensity and in primary forests.P adsorption intensity was 0.024-0.059 L · mg-1,and forests with high and low disturbance intensities increased the P adsorption intensity significantly.The maximum buffer capacity varied from 35.68 to 97.97 L · kg-1,with the highest value found in the forest with the highest disturbance intensity.Selective cutting significantly reduced the potential for phosphorus supply in the forest soils.The maximum desorption amount,average desorption rate and readily desorptable phosphorus content in the focal forests were 526.32-797.54 mg · kg-1,14.7％-25.5％ and 1.79-5.41 mg · kg-1,respectively,indicating that the ability of soil to release phosphorus significantly decreased with increasing disturbance intensity.Selective cutting changed the phosphorus adsorption and desorption characteristics by reducing the supply and release of soil phosphorus.关键词
阔叶红松林/择伐干扰/土壤磷/吸附/解吸Key words
Korean pine and broad-leaved mixed forest/selective cutting disturbance/soil phosphorus/adsorption/desorption引用本文复制引用
张鑫,谷会岩,陈祥伟..择伐干扰对小兴安岭阔叶红松林土壤磷吸附解吸的影响[J].应用生态学报,2018,29(1):11-17,7.基金项目
本文由林业公益性行业科研专项(201404303)资助 This work was supported by the National Forestry Industry Public Welfare Projects (201404303). （201404303）
