造林密度对米老排凋落物量及动态的影响

doi:10.7525/j.issn.1673-5102.2017.05.018

摘要/Abstract

摘要： 在2015年10月~2016年9月，采用90个凋落物收集器，研究不同造林密度对米老排人工林凋落物总量、组分及动态特征的影响。结果表明：年凋落物总量及各组分的产量与造林密度呈线性相关。随着造林密度的增加，林分的年凋落物总量、叶、花果和杂物的年凋落物量均呈现降低的趋势，而枝条的年凋落物量呈增加的趋势。不同造林密度米老排人工林的年凋落物量为6.52~8.17 t·hm^-2·a^-1，其中叶为主要组分，占总量的86.2%~87.85%，枝条占0.35%~5.43%，花果占0.46%~4.67%，杂物占6.69%~8.89%。不同造林密度叶凋落物量的月动态变化均呈单峰型，最大值出现在9月，最小值在3~4月。枝条凋落物量的月动态变化呈不规则型，花果和杂物凋落物量均呈双峰型，花果的凋落主要集中在5和10月，而杂物的凋落量高峰在6和9月。凋落物总量与叶凋落物量的月动态变化基本相似，但在6月杂物凋落物量的影响下，有些密度的林分也会呈双峰型。当林分完全郁闭后，随着造林密度的增加，林分枝下高的增加，胸径、树冠比以及冠幅的减小，可能会导致凋落物总量、叶、花果及杂物凋落物量的下降，而枝条的凋落物量增加。

关键词: 造林密度, 米老排, 凋落物, 动态

Abstract: Field investigations were made on the production, components and dynamics of litter of Mytilaria laosensis plantation at different planting densities from October 2015 to September 2016 by using 90 litter traps. The production of litter and its components was linearly correlated with the planting densities; the production of total litter, leave, flower and fruit, and miscellaneous litter decreased, but that of branch litter increased with the increasing of planting densities. The annual litter production of M.laosensis plantation at different planting densities varied from 6.52-8.17 t·hm^-2·a^-1. The leave constituted the highest proportion(86.2%-87.85%), followed by miscellaneous components(6.69%-8.89%) while the branch made up 0.35%-5.43%, and flower and fruit accounted for 0.46%-4.67% of annual yield of the litter. The monthly variation of the litter production of leave at different planting densities showed a unimodal mode with the maximum in September and the minimum in March or April. Monthly variation of branch litter was irregular while that of flower and fruit, miscellaneous litter had bimodal seasonal patterns. Flower and fruit fell mainly in May and October, and miscellaneous litter peaked in June and September. The monthly variation of total litter was almost similar to that of leaf litter, but double peaks would occur in some densities under the influence of miscellaneous litter fall in July. With the increase of the planting densities, the height under living branch would be higher, but DBH, crown ratio and crown width would be lower, which might lead to much decline in total litter, leaf, fruit and miscellaneous litter but there would be great enhance in branch litter after the crown.

Key words: planting density, Mytilaria laosensis, litter, dynamics

中图分类号:

Q949.751.4

张阳锋, 尹光天, 杨锦昌, 黎少玮, 李荣生, 邹文涛. 造林密度对米老排凋落物量及动态的影响[J]. 植物研究, 2017, 37(5): 768-777.

ZHANG Yang-Feng, YIN Guang-Tian, YANG Jin-Chang, LI Shao-Wei, LI Rong-Sheng, ZOU Wen-Tao. Effects of Planting Densities on Production and Dynamics of Litter of Mytilaria laosensis Plantation[J]. Bulletin of Botanical Research, 2017, 37(5): 768-777.

参考文献

1. 黄正暾,王顺峰,姜仪民,等. 米老排的研究进展及其开发利用前景[J]. 南方农业学报,2009,40(9):1220-1223. Huang Z T,Wang S F,Jiang Y M,et al. Exploitation and utilization prospects of eximious native tree species Mytilaria laosensis[J]. Guangxi Agricultural Sciences,2009,40(9):1220-1223.
2. 刘恩,刘世荣. 南亚热带米老排人工林碳贮量及其分配特征[J]. 生态学报,2012,32(16):5103-5109. Liu E,Liu S R. The research of carbon storage and distribution feature of the Mytilaria laosensis plantation in south sub-tropical area[J]. Acta Ecologica Sinica,2012,32(16):5103-5109.
3. 卢立华,贾宏炎,何日明,等. 南亚热带6种人工林凋落物的初步研究[J]. 林业科学研究,2008,21(3):346-352. Lu L H,Jia H Y,He R M,et al. A preliminary study on litter falls of six kinds of plantations in the Tropical South Asia[J]. Forest Research,2008,21(3):346-352.
4. 张浩,庄雪影. 华南4种乡土阔叶树种枯落叶分解能力[J]. 生态学报,2008,28(5):2395-2403. Zhang H,Zhuang X Y. The leaf litter decomposition of four native broad-leaved tree species in South China[J]. Acta Ecologica Sinica,2009,28(5):2395-2403.
5. Paudel E,Dossa G G O,Xu J C,et al. Litterfall and nutrient return along a disturbance gradient in a tropical montane forest[J]. Forest Ecology and Management,2015,353:97-106.
6. Yang Y S,Guo J F,Chen G S,et al. Litterfall,nutrient return,and leaf-litter decomposition in four plantations compared with a natural forest in subtropical China[J]. Annals of Forest Science,2004,61(5):465-476.
7. 陈国平,俎丽红,高张莹,等. 八仙山不同立地落叶阔叶林凋落物养分特征及土壤肥力评价研究[J]. 植物研究,2016,36(6):878-885. Chen G P,Zu L H,Gao Z Y,et al. The characteristics of forest floor nutrients and soil fertility assessment for deciduous broad-leaved forest with different site conditions[J]. Bulletin of Botanical Research,2016,36(6):878-885.
8. 宋彦君,田文斌,刘翔宇,等. 浙江普陀山岛森林凋落物动态与微气候的关联性[J]. 植物生态学报,2016,40(11):1154-1163. Song Y J,Tian W B,Liu X Y,et al. Associations between litterfall dynamics and micro-climate in forests of Putuoshan Island,Zhejiang,China[J]. Chinese Journal of Plant Ecology,2016,40(11):1154-1163.
9. 杨超,黄力,高祥阳,等. 缙云山常绿阔叶林凋落动态及组成[J]. 林业科学研究,2016,29(1):1-9. Yang C,Huang L,Gao X Y,et al. The dynamics and composition of litter fall of evergreen broad-leaved forest on Mt. Jinyun[J]. Forest Research,2016.29(1):1-9.
10. 李慧,王百田,曹远博,等. 吕梁山区3种人工林植被、凋落物生物量差异特征及其与土壤养分的关系[J]. 植物研究,2016,36(4):573-580. Li H,Wang B T,Cao Y B,et al. Difference feature of planted vegetation biomass and litter biomass for three plantations and their relationship with soil nutrients in Lvliang mountainous region[J]. Bulletin of Botanical Research,2016,36(4):573-580.
11. 范春楠,郭忠玲,郑金萍,等. 磨盘山天然次生林凋落物数量及动态[J]. 生态学报,2014,34(3):633-641. Fan C N,Guo Z L,Zheng J P,et al. The amount and dynamics of litterfall in the natural secondary forest in Mopan Mountain[J]. Acta Ecologica Sinica,2014,34(3):633-641.
12. Navarro F B,Romero-freire A,Castillo T D,et al. Effects of thinning on litterfall were found after years in a Pinus halepensis afforestation area at tree and stand levels[J]. Forest Ecology and Management,2013,289:354-362.
13. Liu W Y,Fox J E D,Xu Z F. Litterfall and nutrient dynamics in a montane moist evergreen broad-leaved forest in Ailao Mountains,SW China[J]. Plant Ecology,2003,164(2):157-170.
14. 姚瑞玲,丁贵杰,王胤. 不同密度马尾松人工林凋落物及养分归还量的年变化特征[J]. 南京林业大学学报:自然科学版,2006,30(5):83-86. Yao R L,Ding G J,Wang Y. The annual variation feature of litter and nutrient restitution in different density Pinus massoniana plantation[J]. Journal of Nanjing Forestry University:Natural Sciences Edition,2006,30(5):83-86.
15. 刘洋,张健,冯茂松. 巨桉人工林凋落物数量、养分归还量及分解动态[J]. 林业科学,2006,42(7):1-10. Liu Y,Zhang J,Feng M S. Dynamics of litter production,nutrient return and decomposition of four Eucalyptus grandis plantation[J]. Scientia Silvae Sinicae,2006,42(7):1-10.
16. 孙楠. 不同造林密度杂种落叶松人工林动态研究[D]. 哈尔滨:东北林业大学,2012. Sun N. Dynamics for different planting densities of hybrid larch plantation[D]. Harbin:Northeast Forestry University,2012.
17. Kamruzzaman M,Kamara M,Sharma S,et al. Stand structure,phenology and litterfall dynamics of a subtropical mangrove Bruguiera gymnorrhiza[J]. Journal of Forestry Research,2016,27(3):1-12.
18. 郭婧,喻林华,方晰,等. 中亚热带4种森林凋落物量、组成、动态及其周转期[J]. 生态学报,2015,35(14):4668-4677. Guo J,Yu L H,Fang X,et al. Litter production and turnover in four types of subtropical forests in China[J]. Acta Ecologica Sinica,2015,35(14):4668-4677.
19. 赵晶,闫文德,郑威,等. 樟树人工林凋落物养分含量及归还量对氮沉降的响应[J]. 生态学报,2016,36(2):350-359. Zhao J,Yan W D,Zheng W,et al. Nutrient contents and fluxes in the litterfall from Cinnamomum camphora plantation in response to simulated nitrogen deposition[J]. Acta Ecologica Sinica,2016,36(2):350-359.
20. Zhou L L,Shalom A D D,Wu P F,et al. Litterfall production and nutrient return in different-aged Chinese fir (Cunninghamia lanceolata) plantations in South China[J]. Journal of Forestry Research,2015,26(1):79-89.
21. 杨会侠,汪思龙,范冰,等. 不同林龄马尾松人工林年凋落量与养分归还动态[J]. 生态学杂志,2010,29(12):2334-2340. Yang H X,Wang S L,Fan B,et al. Dynamics of annual litter mass and nutrient return of different age Masson pine plantations[J]. Chinese Journal of Ecology,2010,29(12):2334-2340.
22. Zhou G Y,Guan L L,Wei X H,et al. Litterfall production along successional and altitudinal gradients of subtropical monsoon evergreen broadleaved forests in Guangdong,China[J]. Plant Ecology,2007,188(1):77-89.
23. 徐旺明,闫文德,李洁冰,等. 亚热带4种森林凋落物量及其动态特征[J]. 生态学报,2013,33(23):7570-7575. Xu W M,Yan W D,Li J B,et al. Amount and dynamic characteristics of litterfall in four forest types in subtropical China[J]. Acta Ecologica Sinica,2013,33(23):7570-7575.
24. 邹碧,李志安,丁永祯,等. 南亚热带4种人工林凋落物动态特征[J]. 生态学报,2006,26(3):715-721. Zou B,Li Z A,Ding Y Z,et al. Litterfall of common plantations in south subtropical China[J]. Acta Ecologica Sinica,2006,26(3):715-721.
25. 林波,刘庆,吴彦,等. 森林凋落物研究进展[J]. 生态学杂志,2004,23(1):60-64. Lin B,Liu Q,Wu Y,et al. Advances in the studies of forest litter[J]. Chinese Journal of Ecology,2004,23(1):60-64.
26. 官丽莉,周国逸,张德强,等. 鼎湖山南亚热带常绿阔叶林凋落物量20年动态研究[J]. 植物生态学报,2004,28(4):449-456. Guan L L,Zhou G Y,Zhang D Q,et al. Twenty years of litter fall dynamics in subtropical evergreen broad-leaved forests at the Dinghushan forest ecosystem research station[J]. Acta Phytoecologica Sinica,2004,28(4):449-456.
27. Zhang H C,Yuan W P,Dong W J,et al. Seasonal patterns of litterfall in forest ecosystem worldwide[J]. Ecological Complexity,2014,20:240-247.
28. 郭文福,蔡道雄,贾宏炎,等. 米老排人工林生长规律的研究[J]. 林业科学研究,2006,19(5):585-589. Guo W F,Cai D X,Jia H Y,et al. Growth laws of Mytilaria laosensis plantation[J]. Forest Research,2006,19(5):585-589.
29. Starr M,Saarsalmi A,Hokkanen T,et al. Models of litterfall production for Scots pine (Pinus sylvestris L.) in Finland using stand,site and climate factors[J]. Forest Ecology and Management,2005,205(1-3):215-225.
30. Saarsalmi A,Starr M,Hokkanen T,et al. Predicting annual canopy litterfall production for Norway spruce (Picea abies(L.) Karst.) stands[J]. Forest Ecology and Management,2007,242(2-3):578-586.
31. 原作强,李步杭,白雪娇,等. 长白山阔叶红松林凋落物组成及其季节动态[J]. 应用生态学报,2010,21(9):2171-2178. Yuan Z Q,Li B H,Bai X J,et al. Composition and seasonal dynamics of litter falls in a broad-leaved Korean pine (Pinus koraiensis) mixed forest in Changbai Mountains,Northeast China[J]. Chinese Journal of Applied Ecology,2010,21(8):2171-2178.
32. Cizungu L,Staelens J,Huygens D,et al. Litter and leaf litter decomposition in a central African tropical mountain forest and Eucalyptus plantation[J]. Forest Ecology and Management,2014,326:109-116.
33. Bahamonde H A,Peri P L,Pastur G M,et al. Litterfall and nutrients return in Nothofagus antarctica forests growing in a site quality gradient with different management uses in Southern Patagonia[J]. European Journal of Forest Research,2015,134(1):113-124.
34. Jiménez M N,Navarro F B. Thinning effects on litterfall remaining after 8 years and improved stand resilience in Aleppo pine afforestation (SE Spain)[J]. Journal of Environmental Management,2016,169:174-183.
35. Akers M K,Kane M,Zhao D H,et al. Effects of planting density and cultural intensity on stand and crown attributes of mid-rotation loblolly pine plantations[J]. Forest Ecology and Management,2014,310:468-475.
36. 贾亚运,何宗明,周丽丽,等. 造林密度对杉木幼林生长及空间利用的影响[J]. 生态学杂志,2016,35(5):1177-1181. Jia Y Y,He Z M,Zhou L L,et al. Effects of planting densities on the growth and space utilization of young Cunninghamia lanceolata plantation[J]. Chinese Journal of Ecology,2016,35(5):1177-1181.

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