不同林龄杉木人工林碳储量及其分配格局

doi:10.13287/j.1001-9332.201604.020

应用生态学报 ›› 2016, Vol. 27 ›› Issue (4): 1125-1134.doi: 10.13287/j.1001-9332.201604.020

不同林龄杉木人工林碳储量及其分配格局

兰斯安^1,2,3,杜虎^1,2,曾馥平^1,2,宋同清^1,2*,彭晚霞^1,2,韩畅^1,2,4,陈莉^1,2,4,苏樑^1,2,4

¹中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室, 长沙 410125;
²中国科学院环江喀斯特生态系统观测研究站, 广西环江 547100;
³中国科学院大学, 北京 100049;
⁴湖南农业大学生物科学技术学院, 长沙 410128

收稿日期:2015-08-26 修回日期:2016-01-21 出版日期:2016-04-22 发布日期:2016-04-22
通讯作者: songtongq@isa.ac.cn
作者简介:兰斯安,女,1992年生,硕士研究生. 主要从事植物生态学研究. E-mail: lansian@hotmail.com
基金资助:
本文由中国科学院科技服务网络计划STS项目(KFJ-EW-STS-092)、国家自然科学基金项目(31370485, 31370623, 31400412, 31460135)、广西科技惠民项目(桂科转1599001-6)和广西特聘专家项目资助

Carbon storage and allocation in Cunninghamia lanceolata plantations with different stand ages.

LAN Si-an^1,2,3, DU Hu^1,2, ZENG Fu-ping^1,2, SONG Tong-qing^1,2*, PENG Wan-xia^1,2, HAN Chang^1,2,4, CHEN Li^1,2,4, SU Liang^1,2,4

¹Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;
²Huanjiang Observation and Research Station of Karst Ecosystem, Chinese Academy of Sciences, Huanjiang 547100, Guangxi, China;
³University of Chinese Academy of Sciences, Beijing 100049, China;
⁴College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China

Received:2015-08-26 Revised:2016-01-21 Online:2016-04-22 Published:2016-04-22
Supported by:
This work was supported by the Program of Science and Technology Service Network Initiative (STS), Chinese Academy of Sciences (KFJ-EW-STS-092), the National Natural Science Foundation of China (31370485,31370623,31400412,31460135), Guangxi Provincial Benefiting Program of Science and Technology (1599001-6) and Guangxi Provincial Program of Distinguished Expert in China.

摘要/Abstract

摘要： 基于广西北部杉木主产区45块1000 m²样地的调查,研究幼龄林、中龄林、近熟林、成熟林、过熟林5种林龄杉木植被与土壤碳储量的分配格局.结果表明: 杉木人工林生态系统总碳储量表现为过熟林(345.59 t·hm^-2)>成熟林(331.14 t·hm^-2)>近熟林(299.11 t·hm^-2)>幼龄林(187.60 t·hm^-2)>中龄林(182.81 t·hm^-2).不同林龄碳储量分布格局均为土壤层>植被层>凋落物层,地下部分>地上部分.其中,植被层为34.80～134.55 t·hm^-2,占总碳储量的18.6%～38.9%,随林龄的增加而增加;凋落物层为1.26～2.07 t·hm^-2,占总碳储量的0.4%～1.1%;土壤层为149.24～206.02 t·hm^-2,占总碳储量的61.9%～80.0%.植被层碳储量以乔木层(33.51～133.7 t·hm^-2)最大,占92.8%～98.9%.其中,乔木层各器官碳储量以树干(20.98～95.68 t·hm^-2)最大,占乔木层碳储量的62.6%～72.6%,随林龄的增加而增加;枝、叶碳储量分别占4.8%～11.0%和11.1%～14.2%,随林龄的增加而减小,在过熟林阶段有所上升;根的碳储量占11.3%～12.3%,波动较小,比较稳定.

Abstract: Based on survey of 45 plots (1000 m² each) of five different stand ages, i.e., young, middle-aged, pre-mature, mature, and over-mature plantations, in the main production area of Cunninghamia lanceolata in the north of Guangxi, China, carbon (C) storage and its allocation in vegetation and soil were studied. The results showed that total carbon storage of C. lanceolata plantations changed in the order of over-mature plantation (345.59 t·hm^-2) > mature plantation (331.14 t·hm^-2) > pre-mature plantation (299.11 t·hm^-2) > young plantation (187.60 t·hm^-2) > middle-aged plantation (182.81 t·hm^-2). For all the stand ages, soil stored the greatest amount of carbon, C pool in vegetation layer was the second, while C storage in the litter layer was lowest. On average, C storage in belowground layer was greater than that in aboveground layer. Carbon storage in aboveground vegetation layer ranged from 34.80 to 134.55 t·hm^-2, which contributed 18.6% to 38.9% to the total ecosystem carbon storage and increased with ages. Carbon storage in the litter layer ranged from 1.26 to 2.07 t·hm^-2, which only contributed 0.4%-1.1% to the total ecosystem carbon storage. Carbon storage in the soil layer ranged from 149.24 to 206.02 t·hm^-2 and represented 61.9%-80.0% of ecosystem carbon storage. Canopy layer stored the highest amount of carbon (33.51-133.7 t·hm^-2) and comprised 92.8%-98.9% of aboveground vegetation carbon storage. Within the canopy layer, carbon storage differed with compartments. Stems stored the highest amount of carbon (20.98-95.68 t·hm^-2) by accounting for 62.6%-72.6% of carbon storage in the canopy layer, which increased with ages. The branches and leaves accounted for 4.8%-11.0% and 11.1%-14.2% of C stored in the canopy layer, respectively, which all decreased with ages, while increased to some extent in the over-mature plantation. Roots occupied 11.3%-12.3% of carbon storage in the canopy layer with small fluctuation with the stand age.

兰斯安,杜虎,曾馥平,宋同清,彭晚霞,韩畅,陈莉,苏樑. 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.

LAN Si-an, DU Hu, ZENG Fu-ping, SONG Tong-qing, PENG Wan-xia, HAN Chang, CHEN Li, SU Liang. Carbon storage and allocation in Cunninghamia lanceolata plantations with different stand ages.[J]. Chinese Journal of Applied Ecology, 2016, 27(4): 1125-1134.

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不同林龄杉木人工林碳储量及其分配格局

Carbon storage and allocation in Cunninghamia lanceolata plantations with different stand ages.

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