大兴安岭北部林下苔藓层穿透雨水化学特征及影响因素
王鑫涛 , 樊笑荧 , 张锦豪 , 蔡玉山 , 段亮亮
森林工程 ›› 2025, Vol. 41 ›› Issue (02) : 266 -276.
大兴安岭北部林下苔藓层穿透雨水化学特征及影响因素
The Chemical Characteristics and Their Influencing Factors of Moss Layer Penetration Rain in Northern Da Xing′an Mountains
Moss plays an important role in forest water conservation, nutrient fixation and water quality regulation. In order to reveal the influence of mosses on the water chemical characteristics of forest rainfall redistribution, this study selected Sphagnum and Pleurozium schreberi as research objects, and observed and studied the moss layer penetration rain and water chemical characteristics of the two mosses in the growing season from June to September of 2023. The results showed as follows: the maximum water holding capacity, maximum water holding rate and thickness of Sphagnum were significantly (P<0.01) higher than those of Pleurozium schreberi. There were differences in ion concentration between the two species of moss penetration rain. K+ showedthe most significant leaching effect of Sphagnum and F- showedthe most significant retention effect. The K+ concentration increased by 241% after passing through the Sphagnum layer compared with the canopy penetration rain, while the F- concentration decreased by 51.6%. The total metal ion concentration increased by 71.7% after passing through the Sphagnum layer, while the total concentration of nonmetallic ions decreased by 19.9%. showed the most significant leaching effect of Pleurozium schreberi, and Ca2+ showed the most significant retention effect. concentration increased by 147.7% after passing through the Pleurozium schreberi layer compared with the canopy penetration rain. The concentration of Ca2+ decreased by 5.2%. The total concentration of metal ions increased by 10.2% after passing through the Pleurozium schreberi layer, while the total concentration of non-metal ions decreased by 62.6%. (3) The leaching concentration of moss layer penetration rain was affected by pH value, temperature and canopy penetration rain ion concentration. Except Fe3+ and Cl-, the other ions were all negatively correlated with the canopy penetration rain ion concentration. This study showed that the ion concentrations in the water of canopy penetration rain changed significantly after passing through the moss layer, which would in turn affect the chemical content of forest soil. The results of this study provide scientific support for the study of hydrology and hydrochemistry of the cold temperate forest in the Da Xing'anling Mountains.
大兴安岭北部 / 苔藓层穿透雨 / 水化学 / 阴离子 / 阳离子
Northern Da Xing'anling Mountains / moss layer penetration rain / water chemistry / anion / cation
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国家重点研发计划(2023YFE0112805-04)
国家自然科学基金青年项目(41901018)
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