CAJ | 학술논문

为研究干旱半干旱地区森林土壤碳、氮分布特征,选取太行山南麓20年生侧柏、刺槐、栓皮栎人工次生林为研究对象,对林下0~60 cm土层的土壤有机碳、全氮、铵态氮、硝态氮含量及土壤物理性质进行测定。结果表明：3种人工林土壤容重随土层深度增加而增大,土壤含水率和孔隙度均表现出随土层深度增加而减少的趋势。3种人工林不同土层的土壤有机碳、氮(全氮、铵态氮、硝态氮)含量均呈现出随土层深度增加而减小的趋势,总体上有机碳和全氮含量均表现为刺槐人工林最高、侧柏人工林最低。3种人工林林下土壤剖面的C/N比值介于6.44~12.00,没有明显差异。3种人工林土壤有机碳含量与全氮、铵态氮、硝态氮(除侧柏人工林)含量均存在极显著相关性。3种人工林土壤含水率与土壤有机碳、全氮、铵态氮、硝态氮(除侧柏人工林)含量呈显著或极显著正相关；而土壤容重与之表现出一定的负相关关系,但仅侧柏人工林的有机碳、铵态氮、硝态氮与土壤容重的相关性达显著水平。
위연구간한반간한지구삼림토양탄、담분포특정,선취태행산남록20년생측백、자괴、전피력인공차생림위연구대상,대림하0~60 cm토층적토양유궤탄、전담、안태담、초태담함량급토양물이성질진행측정。결과표명：3충인공림토양용중수토층심도증가이증대,토양함수솔화공극도균표현출수토층심도증가이감소적추세。3충인공림불동토층적토양유궤탄、담(전담、안태담、초태담)함량균정현출수토층심도증가이감소적추세,총체상유궤탄화전담함량균표현위자괴인공림최고、측백인공림최저。3충인공림림하토양부면적C/N비치개우6.44~12.00,몰유명현차이。3충인공림토양유궤탄함량여전담、안태담、초태담(제측백인공림)함량균존재겁현저상관성。3충인공림토양함수솔여토양유궤탄、전담、안태담、초태담(제측백인공림)함량정현저혹겁현저정상관；이토양용중여지표현출일정적부상관관계,단부측백인공림적유궤탄、안태담、초태담여토양용중적상관성체현저수평。
In order to explore the distribution characteristics of soil carbon and nitrogen in arid and semia-rid areas,contents of soil organic carbon( SOC) ,total nitrogen( N) ,NH4+-N and NO3--N and soil physi-cal characteristics were investigated in three 20 year-old artificial forests ( Platycladus orientalis,Robinia hispida,Quercus variabili) in southern foot of Taihang mountain. The results showed that with the increase of the soil depth,bulk density of soil increased in three artificial forests;soil moisture content and soil capi-llary porosity decreased;contents of SOC,N(total N,NH4+-N and NO3--N) decreased; overall,for the contents of SOC and total N,Robinia hispida artificial forest was the highest,Platycladus orientalis artifi-cial forest was the lowest. The C/N ratio of soil profiles had no significant differences with the value from 6 . 44 to 12 . 00 . SOC content and soil moisture content were all significantly positively related with the contents of total N,NH4+-N and NO3-N ( except Platycladus orientalis artificial forest) in three artificial forests;the soil bulk density was negatively related with the contents of SOC,total N,NH4+-N and NO3--N,but only significantly related with the contents of SOC,NH4+-N and NO3--N in soil of Platycladus orien-talis artificial forest.