The ratio of weight losses of the litter of Robinia pseudoacacia, Armeniaca vulgaris var.ansu, Platycladus orientalis, Acer truncatum and Cotinus coggygria var.cinenea for one year were 54%, 64%, 78%, 73% and 65%,respectively.

• 一年的失重率刺槐、山杏、侧柏、元宝械、黄栌分别为54%25、64%25、78%25、73%25、65%25。