油松纯林改造混交林后的水土保持效果及经济效益分析  

Soil and Water Conservation Effect and Economic Benefit of Transforming Pinus tabulaeformis Pure Forest into Pinus tabulaeformis Mixed Forest

作　　者：黄春玲 Huang Chunling(State-owned Forest Farm Management Affairs Service Center,Liaoning Kuandian Manchu Autonomous County,Dandong 118200,China)

机构地区：[1]辽宁省宽甸满族自治县国营林场管理事务服务中心,辽宁丹东118200

出　　处：《防护林科技》2020年第4期37-38,57,共3页Protection Forest Science and Technology

摘　　要：针对辽宁省境内油松纯林内松毛虫危害严重、水土保持效果差、效益低等现状,对宽甸县境内的油松纯林实施增植刺槐、山杏、蒙古栎、胡枝子等树种进行混交改造试验,结果表明:混交25年后,林间树冠的截雨效果明显增强,枯枝落叶的厚度及质量增加,提高了土层中含水量,保持水土的效果增强,平均纯利润是油松纯林的11倍左右。Aiming at the present situation of Dendrolimus tabulaeformis which seriously damaged Pinus tabulaeformis pure forest in Liaoning Province in a large area,the soil and water conservation effect is poor,and the benefits are low.Result shows that:After 25 years of mixing,the interception effect of the canopy in the forest enhance significantly,the thickness&weight of litter increase,the water content in the soil layer increase,and the effect of maintaining soil and water greatly enhance,the average net profit is about 11 times larger than that of Pinus tabulaeformis pure forest.

关 键 词：油松纯林 林分改造 混交林 水土保持效果 经济效益 

分 类 号：S714.7[农业科学—林学]