摘要
应用分解林内降水方法,研究降水在不同绿竹种源林冠层内的分配规律。研究表明,永安和龙海试验点不同种源的林冠层穿透水量随降雨量增大而增大,近似直线关系;竹秆径流量,近似“S”型,中间一段时间迅速增加,当降雨量达到一定时,竹秆径流量保持恒量,两个试验点分别为22mm和26mm;永安试验点⑥③⑧号种源林冠层截流能力较弱、⑤①②号种源林冠层截流能力较强,龙海试验点④①号种源林冠层截流能力较弱、③⑤⑧号种源林冠层截流能力较强。该研究对评价绿竹环境适应性以及丰产栽培措施具有重要意义。
By using the method of resolving the precipitation in the forest, the papers studies the precipitation distribution laws in canopy layers of different Dendrocalamopsis oldhami Provenances. Studies have shown the throughfall of Yon gan and Longhai test sites of canopy layers of different provenances increases w ith rainfall, similar to the straight line relation; The flow of stalk stem of i t, approximate “ S ' type, run up in some time in the middle. When it reach som e rainfall, the flow of stalk stem of the bamboo keeps constant, the two test sit es show 22mm and 26mm respectively; The test sites ⑥③⑧ provenances in Yongan show the relatively weak ability of damming of crown canopy, number ⑤①② kinds of provenances crown canopy layer relatively strong. Number ④① provenances of Longhai test sites show the relatively weak ability of damming of crown canopy, number ③⑤⑧ provenances show the relatively strong ability of damming of crow n canopy. The study has very important meanings to Dendrocalamopsis oldhami of i ts bumper culture measures and environmental adaptability influence.
出处
《亚热带水土保持》
2005年第2期6-10,共5页
Subtropical Soil and Water Conservation
