CAJ | 학술논문

在黑龙江省伊春市带岭区凉水国家自然保护区原始红松针阔混交林内，选择3个代表林隙作为试验样地，运用网格法布设采样点，在生长季(6-10月)对表层土壤(0～20 cm )颗粒有机碳( POC )和矿物结合有机碳( MOC)含量进行连续测定，采用经典统计学和地统计学相结合的方法，分析土壤 POC 和 MOC 的时空异质性。结果表明：土壤 POC和 MOC含量随月份变化显著，大体呈现出先升后降然后又明显升高的趋势，但 MOC 变化滞后于 POC；土壤 POC( CV：50.5%～94.4%)和 MOC( CV：31.5%～50.5%)含量均存在空间异质性，其变异均为中等程度变异；方差分析表明，月份对土壤 POC和 MOC含量均具有极显著影响(P ＜0.01)，而林隙大小对前者影响极显著(P＜0.01)，对后者影响不显著(P＞0.05)；结构比[C/(C0+C)]表明，两者均具有强烈的空间自相关性，主要由结构性因素引起；土壤 POC和 MOC含量空间分布的等值线图显示，它们在研究尺度内呈斑块状或连续分布；POC在林隙中心或近中心位置含量较低，斑块状分布较明显，而 MOC 分布比 POC 均匀，且低值中心大多分布在林隙边缘； MOC的空间分布格局随月份的变化比 POC相对稳定。
재흑룡강성이춘시대령구량수국가자연보호구원시홍송침활혼교림내，선택3개대표림극작위시험양지，운용망격법포설채양점，재생장계(6-10월)대표층토양(0～20 cm )과립유궤탄( POC )화광물결합유궤탄( MOC)함량진행련속측정，채용경전통계학화지통계학상결합적방법，분석토양 POC 화 MOC 적시공이질성。결과표명：토양 POC화 MOC함량수월빈변화현저，대체정현출선승후강연후우명현승고적추세，단 MOC 변화체후우 POC；토양 POC( CV：50.5%～94.4%)화 MOC( CV：31.5%～50.5%)함량균존재공간이질성，기변이균위중등정도변이；방차분석표명，월빈대토양 POC화 MOC함량균구유겁현저영향(P ＜0.01)，이림극대소대전자영향겁현저(P＜0.01)，대후자영향불현저(P＞0.05)；결구비[C/(C0+C)]표명，량자균구유강렬적공간자상관성，주요유결구성인소인기；토양 POC화 MOC함량공간분포적등치선도현시，타문재연구척도내정반괴상혹련속분포；POC재림극중심혹근중심위치함량교저，반괴상분포교명현，이 MOC 분포비 POC 균균，차저치중심대다분포재림극변연； MOC적공간분포격국수월빈적변화비 POC상대은정。
Three representative forest gaps were selected as experimental plots in Pinus koraiensis coniferous and broad-leaved mixed virgin forest in Liangshui National Nature Reserve, Dailing District, Yichun, Heilongjiang Province. Sampling points were set up by the grid method,the contents of soil particulate organic carbon ( POC ) and mineral-associated organic carbon ( MOC ) in surface soil layer ( 0 -20 cm ) were periodically measured from June to October during the growing season. Spatiotemporal heterogeneity of POC and MOC were analyzed by the methods of traditional statistics and geostatistics. The results showed that: soil POC and MOC changed significantly over months. Both of them roughly exhibited the following tendency,i. e. ,first increasing,then decreasing,after obviously increasing,but the change of MOC lagged behind the change of POC; Both of soil POC ( coefficient of variation ranged from 50. 5% to 94. 4%) and MOC( coefficient of variation ranged from 21. 0%to 61. 0%) had spatial heterogeneity,their variability fell into moderately spatial variability; Variance analysis showed that month had highly significant influences on soil POC and MOC(P<0. 01). The forest gap size had highly significant effect(P<0. 01) on the former,but no significant impact on the latter ( P > 0. 05 ); According to the proportion [C/( C0 + C ) ], both of POC and MOC had strongly spatial autocorrelation that was mainly caused by structural factors; Contour maps indicated that POC and MOC in surface soil layer had the characteristics of patchy or continuous distribution; Soil POC was lower in the forest gap center or near the center,patchy distribution was relatively obvious. The distributions of MOC were more even than that of POC,and low-value centers mostly distributed on the edge of forest gaps; The spatial distribution pattern of MOC over different months was relatively stable compared with that of POC.