西南林业大学学报
西南林業大學學報
서남임업대학학보
JOURNAL OF SOUTHWEST FORESTRY COLLEGE
2014年
1期
14-20
,共7页
乳源木莲%毛竹%混交%生长状况%土壤肥力
乳源木蓮%毛竹%混交%生長狀況%土壤肥力
유원목련%모죽%혼교%생장상황%토양비력
Manglietia yuyuanensis%Phyllostachys pubescens%mixed plantation%growth status%soil fertility
对杉木乳源木莲混交林砍伐杉木后形成的乳源木莲毛竹新林型的生长及土壤肥力状况进行研究，结果表明：乳源木莲毛竹枝叶分布层次明显，乳源木莲位于林分上层，林分结构合理，物种多样性较高；乳源木莲在2002-2012年的10年间能够保持较高生长量，有利于培育乳源木莲大径材；3种混交处理中，2002-2012年不同密度乳源木莲平均胸径、平均树高及单株立木材积生长量虽有差异，但差异较小；不同处理毛竹高径生长、产笋量和总产材量均存在差异，以RD处理、RC处理为好。乳源木莲毛竹混交林是拟自然更新的林型，能够改善林地土壤肥力，具有省工、适用、高效的经营特点，适宜在中亚热带林区高丘低山区域推广应用。
對杉木乳源木蓮混交林砍伐杉木後形成的乳源木蓮毛竹新林型的生長及土壤肥力狀況進行研究，結果錶明：乳源木蓮毛竹枝葉分佈層次明顯，乳源木蓮位于林分上層，林分結構閤理，物種多樣性較高；乳源木蓮在2002-2012年的10年間能夠保持較高生長量，有利于培育乳源木蓮大徑材；3種混交處理中，2002-2012年不同密度乳源木蓮平均胸徑、平均樹高及單株立木材積生長量雖有差異，但差異較小；不同處理毛竹高徑生長、產筍量和總產材量均存在差異，以RD處理、RC處理為好。乳源木蓮毛竹混交林是擬自然更新的林型，能夠改善林地土壤肥力，具有省工、適用、高效的經營特點，適宜在中亞熱帶林區高丘低山區域推廣應用。
대삼목유원목련혼교림감벌삼목후형성적유원목련모죽신림형적생장급토양비력상황진행연구，결과표명：유원목련모죽지협분포층차명현，유원목련위우림분상층，림분결구합리，물충다양성교고；유원목련재2002-2012년적10년간능구보지교고생장량，유리우배육유원목련대경재；3충혼교처리중，2002-2012년불동밀도유원목련평균흉경、평균수고급단주립목재적생장량수유차이，단차이교소；불동처리모죽고경생장、산순량화총산재량균존재차이，이RD처리、RC처리위호。유원목련모죽혼교림시의자연경신적림형，능구개선임지토양비력，구유성공、괄용、고효적경영특점，괄의재중아열대림구고구저산구역추엄응용。
The study was carried out on soil fertility and the growth status of the transformed Manglietia yuyuanensis plantation mixed with Phyllostachys pubescens after the Cunninghamia lanceolata trees were selectively cut off which used to be mixed with the Manglietia yuyuanensis.The results indicated that the branch and foliage distribution of Manglietia yuyuanensis was obviously stratified,the Manglietia yuyuanensis tree species occupied the upper layer in the stand,indicating a reasonable stand structure and a higher species diversity.The growth rate of Manglietia yuyuanensis was high in the following 10 years,which could be cultivated for large-sized timber.There were no significant differences in the average DBH,average tree height,and the average individual standing volume of Manglietia yuyuanensis in the following 10 years among three types of mixing treatments.However,there were significant differences in the average DBH,average tree height,average yield of bamboo shoot,and the average in-dividual standing volume of Phyllostachys pubescens,and the results showed that RD and RC mixing type were bet-ter than the other in the subsequent decade.The mixed plantation of Manglietia yuyuanensis and Phyllostachys pu-bescens turned to be a close-to-nature forest type,which was labor saving,more adaptable to the mountainous site conditions,high efficient and able to promote the soil fertility.It was proposed to be extended and applied in hilly and mountainous areas in the central Asian tropical forest zone.
