摘要
选择位于辽东山区苏子河上游赵家林场的白榆+水曲柳天然次生混交林、蒙古栎天然次生林、红松人工纯林、落叶松人工纯林等4种典型的水源涵养林为研究对象,研究了水源涵养林枯落物的持水特性。结果表明:枯落物总最大持水量从大到小依次为红松人工纯林、落叶松人工纯林、蒙古栎天然次生林、白榆+水曲柳天然次生混交林。总体最大持水率从大到小依次为落叶松人工纯林、白榆+水曲柳天然次生混交林、红松人工纯林、蒙古栎天然次生林。吸水速度最快的为红松人工纯林和落叶松人工纯林,最慢的为白榆+水曲柳天然次生混交林。针叶林林下枯落物平均吸水速度大于针阔混交林和阔叶林。
Four typical water conservation forests such as Ulmus pumila + Fraxinus mandschurica natural secondary mixed forest, Quercus mongolica natural secondary forest, Pinus koraiensis artificial pure forest and Larix gmelinii artificial pure forest were selected in Zhaojia Forest Farm in the upper reaches of Suzi River in Eastern Liaoning Mountainous Area. The object studied the water holding characteristics of litter in water conservation forests. Result shows that the maximum water holding capacity of litter is from Pinus koraiensis artificial pure forest, Larix gmelinii artificial pure forest, Quercus mongolica natural secondary forest, Ulmus pumila + Fraxinus mandschurica natural secondary mixed forest. The overall maximum water holding rate is from Larix gmelinii artificial pure forest, Ulmus pumila + Fraxinus mandschurica natural secondary mixed forest, Pinus koraiensis artificial pure forest, Quercus mongolica natural secondary forest. The fastest water absorption rate is the artificial pure forest of Pinus koraiensis and the artificial pure forest of Larix gmelinii . The slowest is the natural secondary mixed forest of Ulmus pumila + Fraxinus mandschurica . The average water absorption rate of litter under coniferous forest is higher than that of coniferous and broad-leaved forest and broad-leaved forest.
作者
邢亮
Xing Liang(Liaoning Forestry Investigation and Planning Monitoring Institute, Shenyang 110122, China)
出处
《防护林科技》
2019年第2期11-15,共5页
Protection Forest Science and Technology
关键词
水源涵养林
枯落物
持水能力
water conservation forest
litter
water holding capacity
