摘要
对云南省松华坝流域典型林分林下凋落物及土壤水文效应进行了初步研究,结果表明:松华坝流域林地凋落物蓄积量为7.86~22.46t·hm^(-2),林下表层(0~20cm)土壤最大持水量在123.3~261.9t·hm^2之间,稳渗率在0.47~3.18mm·min^(-1)之间。其中云南松+桉树混交林在凋落物储量、持水能力和稳渗率方面均大于纯林;桉树林大于云南松林。林地土壤的入渗速率与入渗时间之间存在幂函数关系。不同林地土壤持水能力和稳渗率与林地凋落物储量存在显著正相关性。
Hydrological effects of soil and typical understory litters in Songhua Dam watershed of Yunnan Province was preliminarily studied. Result shows that litter amount in forest of Songhua Dam is about 7.8G 22.4G t hm 2 ; the maximum water holding volume of soil ranges from 123.3t hm 2 to 261.9 t hm 2 steady infiltration rate is about 0.47 3.18 mm min ^-1 The litter amount,water holding capacity ＆ the steady infiltration rate of mixed for est （Pinus yunnanensis ＋Eucalyptus rnaideni ） are more calyptus forest are more than that of Pinus yunnanensis greater than that of single forest;the upper indices of Eu forest. Power function relationship is existed between the forest soil infiltration rate ＆ infiltration time. Water holding capacity, stable infiltration rate among different forest land and forest litter have significant positive correlation.
出处
《防护林科技》
2016年第6期18-21,30,共5页
Protection Forest Science and Technology
关键词
林分
凋落物
土壤
水文效应
forest stand
forest litters
soil
hydrological effect
