小兴安岭林区云冷杉林生长状况与土壤性质  

Soil Properties and Growth of Spruce-fir Forest in Xiaoxing'an Mountains

作　　者：李文影[1] 满秀玲[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2009年第6期1-3,共3页Journal of Northeast Forestry University

基　　金：国家自然科学基金(30771713)

摘　　要：通过对小兴安岭林区云冷杉林的对比分析,探索云冷杉林演替特征及土壤变化趋势,以达到对云冷杉林的合理经营与定期监测的目的。结果表明:云冷杉林地上层土壤密度均小于下层土壤密度,土壤孔隙度、土壤水分含量均是上层大于下层。死亡云冷杉林土壤密度与生长良好的云冷杉林相比呈下降趋势,由0.75 g.cm-3降至0.49 g.cm-3;土壤孔隙度呈增加趋势,由70.73%增至80.77%;有机质、水解N呈上升趋势,速效钾、速效磷质量分数则呈下降趋势。生长良好的云冷杉林各种水分常数均低于严重死亡的云冷杉林,且达差异显著水平(p<0.05)。结果揭示出云冷杉生长状况变化对土壤性质的影响和云冷杉对土壤性质变化的反应。A comparative analysis of different growth status of spruce-fir forests in Xiaoxing＇ an Mountains was conducted. The relationships between the succession characters of spruce-fir and its soil properties were analysed in order to realize rational management and regular monitoring. Results showed that the soil bulk density of the upper layer was less than that of the subsoil, while the soil porosity and soil water content of the upper layer were more than those of the subsoil. Compared with the well-grown spruce-fir forest, the soil bulk density of the dead spruce-fir forest decreased from 0. 75 to 0.49 g · cm^-3 and the soil porosity increased from 70.73 percent to 80.77 percent. The contents of organic matter and hydrolyzed nitro- gen exhibited an increasing tendency, while the contents of available phosphorus and available potassium showed a decrea- sing tendency. There was a significant difference in soil moisture constants between well-grown and dead spruce-fir forests, which indicates the effect of the growth status of spruce-fir forest on soil properties and also the response of spruce-fir forest to the changing soil properties.

关 键 词：小兴安岭 云冷杉林 土壤性质 生长 监测 

分 类 号：S791.14[农业科学—林木遗传育种] S714.2[农业科学—林学]