广西罗城不同林龄杉木人工林碳储量的变化趋势
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摘要
通过样地调查和实验室材料分析,广西罗城杉木人工林中龄林、近熟林、成熟林和过熟林生态系统碳储量的动态变化表现为:杉木人工林生态系统总碳储量表现为过熟林(196.07t.hm-2)>成熟林(156.28t.hm-2)>中龄林(150.09t.hm-2)>近熟林(147.68t.hm-2)。乔木碳储量占其总碳储量的33.33%-44.6%,表现出随着林龄的增加而增长,中龄林、近熟林、成熟林和过熟林林下植被碳储量在1. 19-3. 14t. hm-2范围,枯落物为3. 49-16.04t.hm-2。土壤碳储量表现为过熟林>成熟林>中龄林>近熟林。杉木人工林生态系统碳储量为162. 52t.hm-2,土壤碳储量最大(91.1t.hm-2),占总碳储量的56.1%,其次为乔木层,占总碳储量的38.2%,林下植被和枯落物层只占1.27%和4.49%,中龄林、成熟林和过熟林生态系统总碳储量以及其土壤和乔木碳库均表现为依林龄的增长而增加的趋势。
The dynamic changes of carbon storage in the ecosystems of middle-aged,near-mature,mature and over-mature China fir plantations in Luocheng,Guangxi were studied by sample plot investigation and laboratory material analysis.It is shown:the total carbon storage in the ecosystems of China fir plantations was over-mature( 196.07 t.hm-2) >mature( 156.28 t.hm-2) >middle-aged.Forest( 150.09 t.hm-2) >near mature forest( 147.68 t.hm-2).Carbon storage of arbor accounted for 33.33-44. 6% of total carbon storage,showing an increase with forest age.Carbon storage of vegetation under middle-aged,near-mature,mature and over-mature forests ranged from 1.19 to 3.14 t.hm-2,and litter was 3.49-16.04 t.hm-2.Soil carbon storage was characterized by over mature forest>mature forest>middle aged forest>near mature forest.Carbon storage of China fir plantation e cosystem was 162.52 t.hm-2,soil carbon storage was the largest( 91.1 t.hm-2),accounting for 56.1% of total carbon storage,followed by arbor layer,accounting for 38.2% of total carbon storage,understory vegetation and litter layer accounted for only 1. 27% and 4.49%,middle-aged forest,mature forest and over-mature forest ecosystem carbon storage and soil and arbor. The carbon pool showed a trend of increasing with age.
The dynamic changes of carbon storage in the ecosystems of middle-aged,near-mature,mature and over-mature China fir plantations in Luocheng,Guangxi were studied by sample plot investigation and laboratory material analysis.It is shown:the total carbon storage in the ecosystems of China fir plantations was over-mature( 196.07 t.hm-2) >mature( 156.28 t.hm-2) >middle-aged.Forest( 150.09 t.hm-2) >near mature forest( 147.68 t.hm-2).Carbon storage of arbor accounted for 33.33-44. 6% of total carbon storage,showing an increase with forest age.Carbon storage of vegetation under middle-aged,near-mature,mature and over-mature forests ranged from 1.19 to 3.14 t.hm-2,and litter was 3.49-16.04 t.hm-2.Soil carbon storage was characterized by over mature forest>mature forest>middle aged forest>near mature forest.Carbon storage of China fir plantation e cosystem was 162.52 t.hm-2,soil carbon storage was the largest( 91.1 t.hm-2),accounting for 56.1% of total carbon storage,followed by arbor layer,accounting for 38.2% of total carbon storage,understory vegetation and litter layer accounted for only 1. 27% and 4.49%,middle-aged forest,mature forest and over-mature forest ecosystem carbon storage and soil and arbor. The carbon pool showed a trend of increasing with age.
引文
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[3]赵朝辉,方晰,田大伦,等.间伐对杉木林林下地被物生物量及土壤理化性质的影响[J].中南林业科技大学学报,2012,32(5):102-107.
[4]兰斯安,杜虎,曾馥平,等.不同林龄杉木人工林碳储量及其分配格局[J].应用生态学报,2016,27(4):1125-1134.
[5]曾伟,江斌,熊彩云,等.江西省不同林龄杉木碳储量分配格局[J].中国农学通报,2015,31(28):1-5.
[6]张林,黄永,罗天祥.等.林分各器官生物量随林龄的变化规律,以杉木、马尾松人工林为例[J].中国科学院研究生院学报,2005,22(2):170-178.
[7]梁萌杰,陈龙池,汪思龙,等.湖南省杉木人工林生态系统碳储量分配格局及固碳潜力[J].生态学杂志,2016,35(4):896-902.
[8]唐学君,王伟峰,罗细芳,等.不同林龄序列杉木实生林和萌芽林碳储量分配特征[J].水土保持学报,2017,31(1):127-139.
[9]涂宏涛,孙玉军,刘素真,等.亚热带杉木人工林生物量及其碳储量分布——以福建将乐县杉木人工林为例[J].中南林业科技大学学报,2015,35(7):94-99.
[10]康冰,刘世荣,蔡道雄,等.南亚热带杉木生态系统生物量和碳素积累及其空间分布特征[J].林业科学,2009,45(8):147-153.
[11]王献溥,郭柯,田新智,等.广西杉木林的分类、分布和演替[J].植物资源与环境学报,2004,13(1):43-47.
[12]温远光.杉木林生产力与森林结构关系的研究[J].福建林学院学报,1997,17(3):246-250.
[13] Rasmussen P E,Allmaras R R,Rohde C R,et al.Crop residue influences on soil carbon and nitrogen in a wheat-fallow system[J].Soil Science Society of American Journal,1980(44):596-600.
[14]周玉荣,余振良,赵士洞.我国主要森林生态系统碳储量和碳平衡[J].植物生态学报,2000,24(5):518-522.
[15]毛芳芳.森林环境[M].北京:中国林业出版社,2006.
[16]迟健.马尾松和杉木生态习性的比较[J].福建林业科技,1992,19(2):31-35.