防护林科技
防護林科技
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PROTECTION FOREST SCIENCE AND TECHNOLOGY
2013年
7期
10-11,49
,共3页
杨树人工林%边缘效应%生长量%经济效益
楊樹人工林%邊緣效應%生長量%經濟效益
양수인공림%변연효응%생장량%경제효익
poplar plantations%edge effects%growth%economic benefits
通过辽阳地区不同杨树林地不同方向上的边缘效应对杨树生长影响的研究,结果表明:在12年生辽宁杨、9年生3930杨和8年生3930杨3个样地中,皆以东部方向上的边缘深度最大,表现出的边缘效应亦最大,北部方向次之。实践中,可通过增加东部方向上杨树的株数,使杨树林东部边缘部分在整个林子中的比例增大,可显著提高杨树的生物产量和经济效益。
通過遼暘地區不同楊樹林地不同方嚮上的邊緣效應對楊樹生長影響的研究,結果錶明:在12年生遼寧楊、9年生3930楊和8年生3930楊3箇樣地中,皆以東部方嚮上的邊緣深度最大,錶現齣的邊緣效應亦最大,北部方嚮次之。實踐中,可通過增加東部方嚮上楊樹的株數,使楊樹林東部邊緣部分在整箇林子中的比例增大,可顯著提高楊樹的生物產量和經濟效益。
통과료양지구불동양수임지불동방향상적변연효응대양수생장영향적연구,결과표명:재12년생료녕양、9년생3930양화8년생3930양3개양지중,개이동부방향상적변연심도최대,표현출적변연효응역최대,북부방향차지。실천중,가통과증가동부방향상양수적주수,사양수림동부변연부분재정개림자중적비례증대,가현저제고양수적생물산량화경제효익。
@@@@The influences of edge effects within different directions on different places on growth of poplar in Liaoyang Region were studied .The result shows that :in three plots of 12-year-old Populus liaoningensis ,9-year-old Popu-lus × euramericana cv .N3930 ,8-year-old Populus × euramericana cv .N3930 ,depth of the edge in east direction are all maximum ;the edge effect is also shown by the largest ,followed by northern direction .In practice ,increas-ing the poplar trees in the eastern direction not only can increase the proportion of poplar in eastern edge of the woods in the entire forest ,but also can significantly improve biomass production & economic benefits of the poplar .