CAJ | 학술논문

以甘肃白龙江高海拔杜鹃(Rhododendron simsii Planch)纯林木残体为研究对象，采用野外实地观测和样带法，研究腐烂程度、密度与持水性能的关系。结果表明：CWD的密度随着腐烂程度的增加而减小；吸水速率随着浸泡时间增加而降低；持水率的变化幅度随着时间的增加而减小，一般情况下在同一时间段内腐烂程度越大持水率越大，即Ⅲ〉Ⅱ〉Ⅰ，但是在0～4h时段内Ⅱ的持水率稍大于Ⅰ的持水率；腐烂等级与储水潜力呈正相关性，即腐烂程度越大相应的储水潜力越大；最大拦截率随着密度的减小而增大；自然含水率与物质本身有关外，还与降雨量、光照等有关。因此，就甘肃白龙江高海拔杜鹃三种不同腐烂程度的木残体而言，腐烂程度最高的密度最小，其有效持水率（244.31%）、最大持水率(240.33%)、有效拦截率(151.04%)都较高，持水能力（0.46）也最大。
이감숙백룡강고해발두견(Rhododendron simsii Planch)순림목잔체위연구대상，채용야외실지관측화양대법，연구부란정도、밀도여지수성능적관계。결과표명：CWD적밀도수착부란정도적증가이감소；흡수속솔수착침포시간증가이강저；지수솔적변화폭도수착시간적증가이감소，일반정황하재동일시간단내부란정도월대지수솔월대，즉Ⅲ〉Ⅱ〉Ⅰ，단시재0～4h시단내Ⅱ적지수솔초대우Ⅰ적지수솔；부란등급여저수잠력정정상관성，즉부란정도월대상응적저수잠력월대；최대란절솔수착밀도적감소이증대；자연함수솔여물질본신유관외，환여강우량、광조등유관。인차，취감숙백룡강고해발두견삼충불동부란정도적목잔체이언，부란정도최고적밀도최소，기유효지수솔（244.31%）、최대지수솔(240.33%)、유효란절솔(151.04%)도교고，지수능력（0.46）야최대。
The thick wood debris of Rhododendron in high altitude Rhododendron forest as the study object, the relationships between the rotting degree, density and water holding capacity of Rhododendron thick wood debris was analyzed using field observations and sampling transects. The results showed as follow, CWD density de?creases with the increase of the rotting degree, the water absorption rate decreased with the increase of immer?sion time.Changes in amplitude of water retention rate was decreasing as time increases, in general the greater rotting degree the greater water-holding capability (Ⅲ>Ⅱ>Ⅰ) in the same period of time, but the water-holding capability ofⅡwas slightly greater than that ofⅠwithin 0 to 4h time period. The potential water storage is posi?tively correlated with rotting rate and the maximum interception rate increases with decrease in density. The nat?ural water content was related with substance itself, rainfall and light as well. Therefore, the effective water-hold?ing capability rate (244.31%), the maximum water-holding capability rate (240.33%) and the effective intercep?tion rate (151.04%) were higher and the water-holding capability (0.46) was the highest as the highest level of rotting degree with minimum density of rotting wood debris in the high altitude Rhododendron forest in Bailong River, Gansu.