肉桂林取代杉木林后水源涵养功能的研究

Study on Water Conservation Function by the Replacement of Chinese fir Stand by Cinnamomum cassia Stand

对 4年生肉桂林和杉木萌芽林的林冠层、林下植被层、凋落物层和林地土壤贮水性能进行研究 ,结果表明 ,肉桂林的地上部分持水量、林地土壤持水量 ( 0～ 40 cm)、表层土壤 ( 0～ 2 0 cm)的初渗值和稳渗值依次为 9.92 2 t/hm2 ,3 90 .2 t/hm2 ,1 4.46 mm/min和 8.6 3 mm/min,分别比杉木萌芽林高 4.2 55t/hm2 ,72 .0 t/hm2 ,3 .6 8mm/min和 1 .59mm/min.说明肉桂林取代杉木林后 ,对改善土壤结构 。

This paper dealt with the water holding capacity of canopy,vegetation layer under canopy and litter layer, the water holding capacity and permeability of soil layer at 4 year young Cinnanomum cassia stand and Chinese fir sprout stand The results showed that the total water holding above ground, total water storing of soil in 0~40 cm,the original permeation value and the steady permeation value in 0~20 cm were 9 922 t/hm 2,390 2 t/hm 2, 14 46 mm/min and 8 63 mm/min , which were increased by 4 225 t/hm 2,72 0t/hm2, 3 68 mm/min and 1 59 mm/min respectively as compared with that of Chinese fir sprout stand Therefore,the Cinnamomum cassia stand replacing Chinese fir stand had stronger function of improving soil texture and water conservation