中亚热带常绿阔叶林不同演替阶段碳储量与格局特征

生态学杂志 ›› 2011, Vol. 30 ›› Issue (09): 1935-1941.

中亚热带常绿阔叶林不同演替阶段碳储量与格局特征

宫超1,2,4,汪思龙1,2**,曾掌权1,2,4,邓仕坚1,2,陈建平3,龙康寿3

1中国科学院沈阳应用生态研究所，沈阳 110016；2中国科学院会同森林生态实验站，湖南会同 418307；3湖南省会同县鹰嘴界国家级自然保护区，湖南会同 418307; 4中国科学院研究生院，北京 100049

出版日期:2011-09-08 发布日期:2011-09-08

Carbon storage and its distribution pattern of evergreen broad-leaved forests at different succession stages in mid-subtropical China.

GONG Chao1,2,4, WANG Si-long1,2**, ZENG Zhang-quan1,2,4, DENG Shi-jian1,2, CHEN Jian-ping3, LONG Kang-shou3

1Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2Huitong National Research Station of Forest Ecosystem, Chinese Academy of Sciences, Huitong 418307, Hunan, China; 3Yingzuijie National Nature Reserve, Huitong 418307, Hunan, China; 4Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Online:2011-09-08 Published:2011-09-08

摘要/Abstract

摘要： 研究了湖南鹰嘴界自然保护区内马尾松(Pinus massoniana)林、马尾松阔叶树混交林和常绿阔叶林这3种处于不同演替阶段森林类型的碳储量及时空分布格局。结果表明：3种类型森林生态系统碳储量分别为182.86、179.84和229.12 Mg C·hm^-2，其中乔木层占59.57%～67.88%，随森林进展演替增加，乔木层是生态系统碳储量主要贡献者，且各林分均以树干占乔木层碳储量比例最大；土壤层占31.05%～36.55%，碳储量随演替进展而增加，但对森林生态系统碳储量贡献率减小；林下植被和凋落物层分别占0.41%～3.04%和0.65%～2.53%，均随演替进展而减少，对生态系统碳储量贡献微弱；演替过程中生物量碳与土壤碳储量比为1.96、1.69和2.20，生物量碳在生态系统碳储量中所占比例呈增加趋势。可见在常绿阔叶林分布区，实施近自然林经营，模拟常绿阔叶林结构，是提升该区域森林碳汇能力的重要途径。

关键词: 春播小麦, 籽粒品质, 生育进程, 气候条件

Abstract: This paper studied the carbon (C) storage and its distribution pattern of Pinus massoniana forest, mixed P. massoniana-broad-leaved forest, and evergreen broad-leaved forest representing three different succession stages of evergreen broad-leaved forests in Yingzuijie National Nature Reserve in Hunan Province. The C storage of the three forest ecosystems was 182.86, 179.84 and 229.12 Mg C·hm^-2, respectively. With the largest share in trunk, the carbon stored in tree layers was the main contributor to the C storage, accounting for 59.57%-67.88%, and had an increasing trend with forest succession. The carbon sequestered in soil accounted for 31.05%-36.55%, which also increased with forest succession but had a decreasing proportion with the succession. The carbon storage of understory vegetation and litters had the least share, accounting for 0.41%-3.04% and 0.65%-2.53%, respectively, and decreased with forest succession. The ratio of biomass C to soil C storage of the three forest ecosystems was 1.96, 1.69, and 2.20, respectively, and biomass C played a more and more important role in forest C sequestration during the succession from P. massoniana forest to evergreen broad-leaved forest. It was suggested that to implement near-nature forest management or simulate evergreen broad-leaved forest structure would be the main approach in promoting the carbon sequestering capacity of forest ecosystems in this region.

Key words: Spring-sown wheat, Grain quality, Growing period, Climatic conditions

宫超,汪思龙,曾掌权,邓仕坚,陈建平,龙康寿. 中亚热带常绿阔叶林不同演替阶段碳储量与格局特征[J]. 生态学杂志, 2011, 30(09): 1935-1941.