杉木-深山含笑混交林及其纯林乔木层的净生产力研究
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摘要
采用树干解析法与样地调查,2015年对15年生杉木Cunninghamia lanceolata深山含笑Michelia maudiae混交林及其纯林的乔木层净生产力进行研究。结果表明,乔木层生物量深山含笑纯林(43.26 t·hm(-2))>杉木-深山含笑混交林(32.63 t·hm(-2))>杉木纯林(28.75 t·hm(-2)),且混交林单株树干生物量的积累均高于纯林;乔木层净生产力杉木-深山含笑混交林(5.63 t·hm(-2)·a(-1))>深山含笑纯林(4.12 t·hm(-2)·a(-1))>杉木纯林(3.75 t·hm(-2)·a(-1));年凋落物量杉木-深山含笑混交林(3.30 t·hm(-2)·a(-1))>深山含笑纯林(2.94 t·hm(-2)·a(-1)>杉木纯林(2.61 t·hm(-2)·a(-1))。表明杉木-深山含笑混交林比杉木纯林更有利于林分光合产物的积累,增加养分归还量,有利于林分养分循环利用。
Determinations were conducted on biomass, net productivity and litter of 14-year Cunninghamia lanceolata and Michelia maudiae in mixed stand and their pure stand in 2015 by stem analysis and sample plot survey. The results demonstrated that biomass at tree layer of pure M. maudiae stand was higher than that of mixed stand and pure C. lanceolata stand, and single trunk biomass of two species in mixed stand was higher than that in their pure stand. Net productivity at tree layer was ordered by pure M. maudiae stand>mixed stand>pure C. lanceolata stand, and the annual amount of litterfall was mixed stand>M. maudiae stand> pure C. lanceolata stand. It concluded that mixed stand had advantages of more photosynthetic product, better soil nutrient circling.
Determinations were conducted on biomass, net productivity and litter of 14-year Cunninghamia lanceolata and Michelia maudiae in mixed stand and their pure stand in 2015 by stem analysis and sample plot survey. The results demonstrated that biomass at tree layer of pure M. maudiae stand was higher than that of mixed stand and pure C. lanceolata stand, and single trunk biomass of two species in mixed stand was higher than that in their pure stand. Net productivity at tree layer was ordered by pure M. maudiae stand>mixed stand>pure C. lanceolata stand, and the annual amount of litterfall was mixed stand>M. maudiae stand> pure C. lanceolata stand. It concluded that mixed stand had advantages of more photosynthetic product, better soil nutrient circling.
引文
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[3]张昌顺,李昆.人工林地力的衰退与维护研究综述[J].世界林业研究,2005,18(1):17-21.
[4]俞新妥.杉木栽培学[M].福州:福建科学技术出版社,1997.
[5]马祥庆.杉木人工林连栽生产力下降研究进展[J].福建林学院学报,2001,21(4):380-384.
[6]马祥庆,范少辉,刘爱琴,等.不同栽植代数杉木人工林土壤肥力的比较研究[J].林业科学研究,2000,13(6):577-582.
[7]范少辉,马祥庆,傅瑞树,等.不同栽植代数杉木人工林林下植被发育的比较研究[J].林业科学研究,2001,14(1):8-16.
[8]朱少木.杉木深山含笑混交林分生物量结构研究[J].安徽农学通报,2012,18(13):121-123.
[9]田晓,刘苑秋,魏晓华,等.模拟楠木杉木人工混交林不同混交比例对净生产力和碳储量的影响[J].江西农业大学学报,2014(01):122-130.
[10]李晓储,万志州,黄利斌,等.乐昌含笑引种育苗技术研究[J].林业科技开发,2001,15(3):14-15.
[11]王俊鸿,吴鹏飞,周丽丽,等.杉木人工林生物量和生产力研究进展[J].河北北方学院学报:自然科学版,2014,30(3):36-40.
[12]覃林,何友均,李智勇,等.南亚热带红椎马尾松纯林及其混交林生物量和生产力分配格局[J].林业科学,2011,47(12):17-21.
[13]何贵平,陈益泰,,余元华,等.杉木、山杜英混交林及其纯林生物量研究[J].江西农业大学学报,2003,25(6):819-823.
[14]杨玉盛,俞白楠,谢锦升,等.杉木观光木混交林凋落物数量、组成及动态[J].林业科学,2001,37(s1):30-34.
[15]陈光水,杨玉盛,何宗明,等.杉木观光木混交林群落净生产力[J].林业科学,2001(1):143-147.