CAJ | 학술논문

通过2013年在黔中喀斯特区采用网袋法进行植物凋落叶的分解实验，比较不同光合功能群树种凋落叶的残留率、分解速率、有机碳释放速率的差异。结果表明，研究区广光耐荫功能群树种(I)、窄光耐荫功能群树种(II)、广光喜光功能群树种(III)、窄光喜光功能群树种(IV)4种功能群树种凋落物在1年的分解过程中，残留率变化趋势分第1~4月、第5~9月、第10~12月3阶段，呈快-慢-快的规律；各光合功能群树种凋落叶分解速率为 III>IV>I>II。有机碳释放速率为 IV>II>III>I。凋落叶分解过程残留率与其有机碳释放速率均呈极显著负相关关系。喜光树种比耐荫树种凋落叶更易分解。
통과2013년재검중객사특구채용망대법진행식물조락협적분해실험，비교불동광합공능군수충조락협적잔류솔、분해속솔、유궤탄석방속솔적차이。결과표명，연구구엄광내음공능군수충(I)、착광내음공능군수충(II)、엄광희광공능군수충(III)、착광희광공능군수충(IV)4충공능군수충조락물재1년적분해과정중，잔류솔변화추세분제1~4월、제5~9월、제10~12월3계단，정쾌-만-쾌적규률；각광합공능군수충조락협분해속솔위 III>IV>I>II。유궤탄석방속솔위 IV>II>III>I。조락협분해과정잔류솔여기유궤탄석방속솔균정겁현저부상관관계。희광수충비내음수충조락협경역분해。
In 2013 by using the litter-bag method,the researchers carried out the plant leaf litter decompo-sition experiment in central Guizhou Karst area,in order to compare differences between residual rates of different photosynthetic functional plant groups’littered leaves,the leaf litter decomposition rates and the organic carbon release rates.There were four species of photosynthetic functional plant groups analyzed in the study area,which were wide-light shade tolerant species (I), narrow-light shade tolerant species (II),wide-light bright light species (III),narrow-light bright light species (IV).Based on analysis of the leaf litter decomposition process in one year,the results showed that tendency of the residual rates presented the fast-slow-fast changes during different periods of time from January to April,May to Sep-tember,and October to December respectively.The leaf litter decomposition rate was III>IV>I>II. The organic carbon release rate was IV>II>III>I.There were negative correlation between the residual rates and the organic carbon release rates.The bright light species were more easier to be decomposed.