不同樟子松林分碳空间分布及其化学计量特征  

Spatial Distribution and Stoichiometric Characteristics of Carbon in Different Pinus sylvestris var.mongolica Forests

作　　者：马骏 卢志朋 安宇宁 曹怡立 Ma Jun;Lu Zhipeng;An Yuning;Cao Yili(Liaoning Research Institute of Sandy Land Control and Utilization,Fuxin 123000,China)

机构地区：[1]辽宁省沙地治理与利用研究所,辽宁阜新123000

出　　处：《防护林科技》2023年第2期44-47,共4页Protection Forest Science and Technology

摘　　要：以章古台地区3种樟子松林分为研究对象,分别测定每种林型叶片、凋落物和土壤碳、氮、磷、钾元素含量,计算C/N、C/P、C/K及不同土层碳密度,结果表明:樟子松+杨树混交林全碳(TC)分布变化范围,叶片为583.1~763.2 g·kg^(-1),凋落物为660.5~722.9 g·kg^(-1),表层土壤为3.4~3.8 g·kg^(-1),中层土壤为3.42~3.69 g·kg^(-1),下层土壤为2.81~3.02 g·kg^(-1);樟子松纯林全碳(TC)分布变化范围,叶片为540.66~779.8 g·kg^(-1),凋落物为681.3~719.8 g·kg^(-1),表层土壤为4.75~5.02 g·kg^(-1),中层土壤为2.54~2.72 g·kg^(-1),下层土壤为2.39~2.45 g·kg^(-1);樟子松+赤松混交林全碳(TC)分布变化范围,叶片为550.9~789.5 g·kg^(-1),凋落物为683.7~705.8 g·kg^(-1),表层土壤为2.11~2.38 g·kg^(-1),中层土壤为2.32~2.52 g·kg^(-1),下层土壤为2.57-3.48 g·kg^(-1);土壤碳密度为表层土壤(0~20 cm)>中层土壤(>20~40 cm)>下层土壤(>40~60 cm)。Taking three Pinus sylvestris var.mongolica forests in Zhanggutai area as the research objects,the stoichiometry of carbon,nitrogen,phosphorus and potassium in leaves,litter and soil of each forest type was measured,and the C/N,C/P,C/K and carbon density in different soil layers were calculated.The results showed as follows:the total carbon(TC)distribution of P.sylvestris var.mongolica-Populus mixed forest ranged from 583.1-763.2 g·kg^(-1)in leaf,from 660.5-722.9 g·kg^(-1)in litter,from 3.4-3.8 g·kg^(-1)in topsoil,from 3.42-3.69 g·kg^(-1)in middle soil,and from 2.81-3.02 g·kg^(-1)in subsoil;the range of total carbon(TC)distribution in P.sylvestris var.mongolica pure forest was 540.66-779.8 g·kg^(-1)in leaves,681.3-719.8 g·kg^(-1)in litter,4.75-5.02 g·kg^(-1)in surface soil,2.54-2.72 g·kg^(-1)in middle soil,2.39-2.45 g·kg^(-1)in lower soil;the distribution of total carbon(TC)in the P.sylvestris var.mongolica-Pinus densiflora mixed forest ranged from 550.9-789.5 g·kg^(-1)in leaf,683.7-705.8 g·kg^(-1)in litter,2.11-2.38 g·kg^(-1)in surface soil,2.32-2.52 g·kg^(-1)in middle soil and 2.57-3.48 g·kg^(-1)in lower soil.Soil carbon density was surface soil(0-20cm)>middle soil(>20-40cm)>lower soil(>40-60cm).

关 键 词：樟子松林 化学计量 C:N 土壤碳密度 

分 类 号：S791.253[农业科学—林木遗传育种]