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作 者 ：王文全 王世绩 刘雅荣 刘建伟

期 刊 ：林业科学 1994年 30卷 1期 页码：25-33

关键词：复垦；欧美杨；旱柳；白榆；刺槐；

Keywords:Reclaimation, P.Xeuramcricana, Salix matsudana, Ulmus pumila, Robinia pseudoacacia,

摘 要 ：针对粉煤灰复田立地(利用电厂粉煤灰填充采煤塌陷区,在其上再覆30cm土壤)营造人工林的可行性和造林树种选择等问题,调查了该立地上生长的4—5年生欧美杨、旱柳、白榆和刺槐人工林根系的分布及生长特点。结果表明:四树种根系分布深达180cm以下,水平延伸达8m。在粉煤灰层中,各树种根系均能正常生长,其中根系长度和根系重量分别占总量的68%和87%以上。在30cm厚表层土壤中,根系长度和重量分别低于总量的30%和13%。欧美杨、旱柳、白榆和刺槐的根系总长度和总重量分别为每株49.24、29.45、25.42、68.08km和7.45、7.54、10.05、13.37kg。

Abstract:Aiming at the feasibility of conducting plantation on the site of renewed land by powder of coal(the coalpits filled with the fine coal ash from electri factory, then covered with soil layer of 30cm)and the selection of appropriate tree species, investigation on the distribution and growth characteristics of root-system of 4-5-yearold plantations of P.Xeuramericana, Salix matsudana,Ulmus pumila and Robinia pseudoacacia were carried out. The results are as follows:1. Root-system of all the 4 tree species can grow normally and the distribution depth can reach over 180cm in the soil, of which the weight and length of the root in the ash amount to 68% and 87% of the total,and those in the 30cm soil layer, 32% and 13%,respectively; and me horizontal root range around 8m.2.The total root length and weight of the poplar,willow,elm and locust are:49.29,29.45,25.42 and 68.08 km/plant,and 7.45,7.54,10.05 and 13.37kg/plant respectively.

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