摘要
通过对试验区沙棘林林冠层、枯枝落叶层、林地土壤层的生态水文功能分析,研究了祁连山浅山区沙棘人工林在调节水分方面的作用,结果表明:10年生沙棘林在郁闭度为0.7～0.8时,林冠对降雨的截留率为39.3%;枯枝落叶层厚度平均在1～3cm,枯落物质量22t·hm-2,水容重为干质量的2.12～4.25倍;蓄水量达13.65～23.37t·hm-2;林地0～20cm土壤的初渗率为16.165mm·min-1,是对照区的8.7倍;稳渗率为2.4mm·min-1,是对照区的2.53倍。
Through analysis on eco-hydrological functions of canopy layer, litter layer ＆ soil layer of forest land of Hippophae rhamnoides in pilot area,the functions of Hippophae rhamnoides plantation in shallow mountain area on Qilian Mountains in regulating water were studied. Result shows that： canopy rainfall interception rate is 39.30% while canopy density of 10-year-old Hippophae rhamnoides are from 0.7 to 0.8; average thickness of litter layer are from I to 3 cm;litter weight are 22 t·hm^-2 ; specific weight of water are about 2.12-4.25 times as heavy as dry unit weights storage capacity reach from 13.65 to 23.37 t·hm^-2 ; initial infiltration rate of 0-20 cm soil of wood- land are 16. 165 mm·min^-1 ,being 8.7 times as large as that of the control areas steady infiltration rate are 2.4mm·min^-1 ,being 2.53 times as large as that of the control area.
出处
《防护林科技》
2013年第6期10-12,共3页
Protection Forest Science and Technology
关键词
祁连山
沙棘人工林
调节水分
Qilian Mountains
Hippophae rhamnoides plantation
regulate water
