冀北山地云杉人工林土壤物理性质的研究  

Study on Soil Physical Properties of Spruce Plantations in Mountainous Area of Northern Hebei

作　　者：王兴 Wang Xing(Hebei Mulan Paddock State-owned Forest Farm,Chengde 068450,China)

机构地区：[1]河北省木兰围场国有林场,河北承德068450

出　　处：《防护林科技》2023年第3期52-54,62,共4页Protection Forest Science and Technology

摘　　要：为探究冀北山地云杉人工林土壤物理性质,选取不同栽植比例的云杉人工林为研究对象,对其土壤物理性质进行分析对比。结果表明:在这3种类型的林分中土壤容重随土层深度的增加而增加,其平均值为类型2(1.05 g·cm^(-3))>类型3(1.19 g·cm^(-3))>类型1(1.01 g·cm^(-3));土壤总孔隙度均值为类型2(60.27%)>类型1(58.68%)>类型3(55.64%),土壤孔隙度均呈现随土层深度的增加而递减的态势;土壤最大持水率与土壤毛管持水率类型2林分都是最大,也呈现出与孔隙度相同的趋势,但相较于孔隙度的变化量较为平缓。In order to explore the soil physical properties of spruce plantations in mountainous areas of northern Hebei,this study selected spruce plantations with different planting ratios as research objects,and analyzed and compared their soil physical properties.The results showed that the soil bulk density increased with the increase of soil depth in these three types of forest stands,and the homogeneity was arranged as type 2(1.05 g·cm^(-3))>type 3(1.19 g·cm^(-3))>type 1(g·cm^(-3)).The mean soil porosity was type 2(60.27%)>type 1(58.68%)>type 3(55.64%),while the soil porosity showed a decreasing trend with the increase of soil depth.The maximum soil water holding rate and soil capillary water holding rate of type 2 forest stand were the largest,and also showed the same trend as porosity,but the change was relatively gentle compared to porosity.

关 键 词：云杉人工林 土壤物理性质 土层深度 容重 孔隙度 

分 类 号：S791.18[农业科学—林木遗传育种] S714.2[农业科学—林学]