辽宁省半干旱与湿润地区樟子松人工林土壤肥力对比分析  

Comparative Analysis of Soil Fertility of Pinus sylvestris var.mongolica Plantation in Semi-arid and Humid Areas of Liaoning Province

作　　者：王冰 Wang Bing(Liaoning Provincial Forestry Survey Planning and Monitoring Institute,Shenyang 110122,China)

机构地区：[1]辽宁省林业调查规划监测院,辽宁沈阳110122

出　　处：《防护林科技》2025年第2期59-63,共5页Protection Forest Science and Technology

摘　　要：为了解土壤肥力对樟子松生长的影响,制定有效的土壤改良措施,提高人工林的健康水平和可持续性,对半干旱与湿润地区樟子松人工林的土壤肥力进行对比,并构建回归模型分析各因子对土壤养分变化的影响。结果表明:在半干旱区,原始样地土壤有机碳(SOC)质量分数高于对照样地,最高为凌源宋杖子(30.0 g·kg^(-1));全氮质量分数也以原始样地较高。湿润区SOC质量分数高于半干旱区。表层(0~10 cm)土壤碱解氮主要受pH和速效磷影响,深层(>20~40 cm)受细颗粒影响显著,R^(2)最高达0.964。速效磷差异区域性明显,抚顺清原和本溪桓仁对照样地显著增加。表层(0~10 cm)的有机碳变化率主要受全氮影响,较深层(>20~40 cm)则受速效磷和细颗粒影响。在湿润地区营建樟子松人工林更有利于土壤氮素的积累,而半干旱地区氮素积累较慢,湿润区土壤磷素积累较少。To understand the influence of soil fertility on the growth of Pinus sylvestris var. mongolica,and formulate effective soil improvement measures to improve the health level and sustainability of the plantation, the soil fertility of Pinus sylvestris var. mongolica plantation in semi-arid and humid areas was compared, and a regression model was established to analyze the effects of each factor on soil nutrient change. The results showed that in the semi-arid area, the soil organic carbon(SOC) mass fraction in the original plot was higher than that in the control plot, and the highest level was in Songzhangzi of Lingyuan(30.0 g·kg^(-1)),and total nitrogen mass fraction was also higher in the original plot. The SOC mass fraction in humid area was higher than that in semi-arid area.Alkali-hydrolyzable nitrogen in surface soil(0-10 cm) was mainly affected by pH and available phosphorus, and that ofthe deep layer(>20-40 cm) was significantly affected by fine particles, with the highest R^(2) of 0.964. The difference of available phosphorus in different regions was obvious, and the contrast plotsin Qingyuan of Fushun and Huanren of Benxi increased significantly. The organic carbon change rate of the upper soil(0-10 cm) was mainly affected by total nitrogen, while that of the deeper soil(20-40 cm) was affected by available phosphorus and fine particles. The construction of Pinus sylvestris var. mongolica plantation in humid areas was more conducive to the accumulation of soil nitrogen, while the accumulation of nitrogen in semi-arid areas was slower, and the accumulation of soil phosphorus in humid areas was less.

关 键 词：辽宁 樟子松人工林 土壤肥力 

分 类 号：S714[农业科学—林学] S791.253.06