CAJ | 학술논문

为了了解间伐对华北落叶松人工林凋落物和土壤理化性质的影响，利用试验测定和定量统计的方法，分析比较了河北省塞罕坝机械林场间伐和未间伐华北落叶松人工林凋落物层和土壤层（0～10 cm、10～20 cm ）的理化性质，结果显示：与未间伐林分相比，50％强度间伐6 a后林分内凋落物层生物量、质量含水量、有机质含量和全氮含量分别提高了17．25％、6．05％、9．08％、31．94％；土壤层的质量含水量、土壤容重和有机质含量有所上升（0～10 cm 土壤层分别增加4．84％、11．11％、15．67％；10～20 cm 土壤层分别增加10．25％、12．50％、28．97％），而全氮含量呈下降趋势（0～10 cm土壤层减少20．83％；10～20 cm土壤层减少16．67％）；土壤pH值亦有所下降。研究进一步证实，通过间伐能够增加地表凋落物生物量，改变有机质分解速率，从而在一定程度上影响土壤的理化特性。
위료료해간벌대화북락협송인공림조락물화토양이화성질적영향，이용시험측정화정량통계적방법，분석비교료하북성새한패궤계림장간벌화미간벌화북락협송인공림조락물층화토양층（0～10 cm、10～20 cm ）적이화성질，결과현시：여미간벌림분상비，50％강도간벌6 a후림분내조락물층생물량、질량함수량、유궤질함량화전담함량분별제고료17．25％、6．05％、9．08％、31．94％；토양층적질량함수량、토양용중화유궤질함량유소상승（0～10 cm 토양층분별증가4．84％、11．11％、15．67％；10～20 cm 토양층분별증가10．25％、12．50％、28．97％），이전담함량정하강추세（0～10 cm토양층감소20．83％；10～20 cm토양층감소16．67％）；토양pH치역유소하강。연구진일보증실，통과간벌능구증가지표조락물생물량，개변유궤질분해속솔，종이재일정정도상영향토양적이화특성。
The influence of thinning on physical and chemical properties of litter and soil from Larix principis‐rupprechtii plantations in Saihanba Mechanized Forestry Centre of Hebei was studied by experimental determination and quantitative statistics .The results showed that compared with the control plots ,after six years of thinning 50% ,the litter biomass , mass water content ,organic content and total nitrogen content of litters increased 17 .25% , 6 .05% ,9 .08% and 31 .94% in thinned plots ,respectively .In soil layers ,the soil mass wa‐ter content ,soil bulk density and organic content were increased by 4 .84% ,11 .11% and 15.67% in 0~10 cm layers while there was an increase of 10 .25% ,12 .50% ,and 28 .97% in 10~20 cm layers ,respectively .But the soil total nitrogen content decreased 20 .83% and 16.67% in that two layers of soil ,and the soil pH value also decreased .The above proved that forest thinning increased litter biomass ,changed the rate of organic decomposition ,and influenced the litter and soil characteristics to some degree .