森林与环境学报2024，Vol.44Issue(4)：346-356,11.DOI:10.13324/j.cnki.jfcf.2024.04.002
9种树种鲜叶凋落物和枯叶凋落物持水能力的比较研究
Comparative study on the water holding ability of fresh and withered leaf litter from nine tree species
摘要
Abstract
To enhance our understanding of leaf litter's role in soil and water conservation,this study compared the water holding abilities of fresh and withered leaf litter. Laboratory soaking experiments were conducted to analyze the water holding and loss characteristics of fresh and withered leaf litter from nine common tree species in South China. The factors influencing the water holding ability of fresh and withered leaf litter were investigated. Results revealed that the maximal water holding capacities of fresh and withered leaf litter across the nine tree species ranged from approximately 92. 36％ to 237. 36％ and 204. 78％ to 504. 88％,respectively. Fresh leaf litter exhibited a greater maximal water holding capacity compared to withered leaf litter. In the initial 12 hours of the water loss experiment,most tree species displayed a higher maximal water loss capacity with fresh leaf litter than with withered leaf litter. However,after 40 hours,the maximal water loss capacity of fresh leaf litter in most tree species was surpassed by withered leaf litter. The maximal water holding ability of fresh leaf litter exhibited a positive correlation with specific leaf area and a negative correlation with leaf area index. Conversely,the maximal water holding ability of withered leaf litter showed a positive correlation with specific leaf area but a negative correlation with density. Overall,fresh leaf litter demonstrated weaker water holding ability compared to withered leaf litter. Nonetheless,considering its abundance,the role of fresh leaf litter in soil and water conservation should not be underestimated. Accurate estimation of leaf litter's impact on forest hydrology necessitates inclusion of the water holding ability of fresh leaf litter in forest hydrological models.关键词
持水性能/鲜叶凋落物/枯叶凋落物/叶片性状/全球气候变化Key words
water holding ability/fresh leaf litter/withered leaf litter/leaf character/global climate change分类
农业科技引用本文复制引用
龙瑜,范淇玮,黄春应,李荟星,余鑫,郑文辉..9种树种鲜叶凋落物和枯叶凋落物持水能力的比较研究[J].森林与环境学报,2024,44(4):346-356,11.基金项目
国家自然科学基金项目"酸雨背景下杉木凋落物诱导的激发效应与其酸缓冲能力的关系研究"(42007102) （42007102）
中国博士后基金项目"酸雨背景下不同酸缓冲能力凋落物输入对杉木林土壤有机碳来源和累积的影响"(2023M730605) （2023M730605）
福建省自然科学基金项目"酸雨背景下杉木凋落物输入对土壤有机质分解的影响研究"(2020J01376)、"土壤酸化缓解对杉木凋落物激发效应的影响及机理研究"(2021J011123) （2020J01376）
三明学院引进高层次人才项目(19YG13). （19YG13）
