杉木人工林蓄积量和生态系统碳数量成熟龄的关系  

Quantitative maturity age for stand volume and ecosystem carbon storage of Cunninghamia lanceolata plantation

作　　者：霍常富[1] 王朋[1] 陈龙池[1,2] 汪思龙[1,2] HUO Changfu;WANG Peng;CHEN Longchi;WANG Silong(Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,Liaoning,China;Huitong Experimental Station of Forest Ecology,Chinese Academy of Sciences,Huitong 418307,Hunan,China)

机构地区：[1]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [2]中国科学院会同森林生态实验站,湖南会同418307

出　　处：《中南林业科技大学学报》2018年第9期94-99,共6页Journal of Central South University of Forestry & Technology

基　　金："十三五"国家重点研发计划项目(2016YFD0600304-02);国家自然科学基金重点项目(41630755);国家973项目(2012CB416905)

摘　　要：在全球气候变化背景下,人工林不仅具有木材生产功能,还肩负起固碳的生态功能。认知林分蓄积和生态系统碳的生长规律,对人工林的多目标经营和可持续发展具有重要意义。以湖南省杉木人工林为例,从生态系统的角度出发,应用建立的杉木蓄积和生态系统碳生长模型,探讨了林分蓄积与生态系统碳生长之间的关系。结果表明:杉木林分蓄积成熟龄为18~27 a,随立地指数的增加而提高,随林分保留密度的增加而下降;生态系统碳成熟龄为16~35 a,随立地指数和保留密度的增加而下降;立地指数对林分蓄积和生态系统碳数量成熟龄的关系具有重要影响,在立地指数较低时,生态系统碳比林分蓄积晚成熟约15 a,而立地指数较高时,恰好相反。今后,为达到人工林的多功能经营目标,应根据立地条件,综合评估各种生产和生态功能的成熟龄。Forest plantation not only has the function of timber production, but also has many ecological service functions like natural forest. How to balance the relationship between timber production and ecological function of plantations is an important issue in front of us. In this study, Chinese Fir（Cunninghamia lanceolata） plantation in Hunan province was selected, and the growth model of stand volume and ecosystem carbon storage were established from the perspective of ecosystem ecology. The results show that the growth dynamics of stand volume and ecosystem carbon were successfully described by improved Schumacher equations; The quantitative maturity age for stand volume was 18-27 years, which increased with site index and decreased with reserved stand density; The quantitative maturity age for ecosystem carbon storage was 16-35 years, decreased with increase of site index and stand density. The relationship between stand volume and ecosystem carbon storage was strongly dependent on site index of Chinese fir plantation. At poor sites, the maturity age of ecosystem carbon storage were about 15 years later than that of stand volume, while in verse at rich sites. In future, in order to achieve multi-objectives of plantations, the rotation age should be seriously re-evaluate especially considering stand site conditions.

关 键 词：碳储量 林龄 生长模型 湖南省 轮伐期 

分 类 号：S718[农业科学—林学]