CAJ | 학술논문

采用可以有效控制环境因子的室内土壤培养试验，对固定沙地土壤不同水分作用下叶凋落物释放CO2的情况进行了初步研究。结果表明：土壤CO2的释放量及凋落物的分解均与土壤干湿情况相关。在添加凋落物与不添加凋落物的处理中，培养前4天的低含水条件下CO2释放速率与中高含水处理相比差异均呈极显著，而4天以后不同水分条件下的释放速率无显著差异。在沙地中，土壤过于湿润或干旱均能够阻碍凋落物的分解。
채용가이유효공제배경인자적실내토양배양시험，대고정사지토양불동수분작용하협조락물석방CO2적정황진행료초보연구。결과표명：토양CO2적석방량급조락물적분해균여토양간습정황상관。재첨가조락물여불첨가조락물적처리중，배양전4천적저함수조건하CO2석방속솔여중고함수처리상비차이균정겁현저，이4천이후불동수분조건하적석방속솔무현저차이。재사지중，토양과우습윤혹간한균능구조애조락물적분해。
This experiment uses laboratory soil incubation experiment that can control environment factor measures the effect on CO 2 re-lease of leaf litters in different water content in fixed dunes .The results showed that:Total CO2 release and litter decomposition were corre-lated to water content of soil .Whether litter added or not , CO2 release rate of low water content was significantly different from that of medi -um and high water contents in the first 4 days.In sand land, either wetness or dryness of soil imposed great influence on litter decomposi -tion, because soil and litter CO2 release amount were significantly different from that of the water content .