鲁中南山地生态修复区人工林植被枯落物层蓄水特征

Water-holding Characteristics of Plantation Litter Layer in Ecology Restoration Area of Rocky Mountain Land in Central Southern Shandong Province

在山东省莱芜市石质山地生态修复区，对5种人工林分枯落物层涵蓄水分特征进行了观测。结果表明：不同林分枯落物层的蓄水保水功能具有明显差别①5种林分枯落物最大持水率在95．0％～208．2％之间，以阔叶林明显高于针叶林。②不同林分枯落物蓄积量在8．8～19．6t／hm^2之间；针叶林枯落物蓄积量较大，因而持水量较高；5种林分枯落物最大持水量在1．8～2．6mm之间，针阔叶混交林依次高于针叶林、阔叶林。③不同林分枯落物层有效拦蓄水深在0．8～1．6mm之间，依次为针阔叶混交林大于阔叶林、针叶林（具体为刺槐×侧柏混交林〉刺槐单纯林〉麻栎单纯林〉赤松单纯林〉赤松×侧柏混交林）。④在石质山区生态修复的林业工程中，应尽量增加针阔叶混交林分或阔叶林分的培育、减少针叶林分，以提高人工林分枯落物层在防止土壤侵蚀和涵养水源中的作用。

Water-holding capacity of litter layer for different forest was researched on rocky mountain region, in LaiWu City, Shandong province. Results indicate that Litter layer of forest play an important role in water-holding capacity. The maximum water-holding percentage of litter layer for five kind of forest is 95.0%～208.2%, being larger for broad leaved forest than that for coniferous forest. ②Coniferous forest is still remaining higher water-holding capacity, owing to the existing amount of coniferous litter is larger than that of broad leaved. The maximum water-holding capacity of litter layer for five kind of forest is 1.8mm～2.6mm, being larger for coniferous-broad leaved mixed forests than that for coniferous forest and broad leaved forest.③The difference of effective interception in five kind of forest was 0.8mm～1. 6mm, and where： coniferous-broad leaved mixed forests 〉 broad leaved forest 〉 coniferous forest, the order was mixed forest of Black Locust and Platycladus orientalis〉pure forest of Black Locust 〉 pure forest of Quercus acutissima 〉 pure forest of Pinus densiflora mixed forest of Pinus densiflora and Platycladus orientalis.