中国伐木制品碳储量时空差异
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中国科学院地理科学与资源研究所,中国科学院研究生院,中国科学院地理科学与资源研究所,中国科学院地理科学与资源研究所,中国科学院研究生院,中国科学院地理科学与资源研究所,中国科学院地理科学与资源研究所

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家环保部公益性行业科研专项(201009020)资助


Spatio-Temporal changing analysis on carbon storage of harvested wood products in China
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Institute of Geographic Science and Natural Resources Research,CAS,,,,

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    摘要:

    森林生态系统碳储量是全球变化研究的热点问题之一,在国内外已经进行了深入的研究。然而,森林采伐后生产的伐木制品碳储量研究相对较少,因此基于IPCC提出的大气流动法,综合考虑伐木制品废弃情形,以2000年为基准年,估算了我国2000-2009新生产伐木制品的碳储量。结果表明,我国伐木制品是一个巨大碳库,且碳储量呈不断增加趋势。2000-2009年我国新生产的伐木制品,在2009年净碳储量为306.52 TgC,非纸木制品、纸类和竹材制品碳储量分别为114.71 TgC、4.33 TgC和199.07 TgC,而薪材燃烧累计碳释放量为11.60TgC,其他伐木制品累计碳释放量共为37.76 TgC。在2009年,终端伐木制品碳储量为318.12TgC,木材制品和竹制品碳储量分别占37.42%和62.58%;在木材制品中,非纸木制品和纸类碳储量为114.71 TgC和4.33 TgC,各占96.36%和3.64%。与方精云估算的我国1999-2003年森林年碳汇量168.1 TgC/a相比,这一时期生产的伐木制品年净碳储量为25.21 Tg/a,占森林年碳汇量的15%,这说明伐木制品在维持碳平衡具有重要的作用。本文估算的竹制品碳储量约为木材制品碳储量的1.67倍,这说明竹材制品碳储量在伐木制品碳储量中占相当大的比重,是一个重要的碳库。此外,按照终端伐木制品净碳储量情况,可将我国分成高储量区、中储量区和低储量区。高储量区包括福建、浙江、湖南、云南、广西、江西6个省,这些地区终端伐木制品净碳储量占全国的67%;中储量区包括安徽、广东、湖北、四川、黑龙江、吉林和内蒙古等地区,其他地区为低储量区。我国7个地区按终端伐木制品净碳储量顺序排列为:华东、华中、华南、西南、东北、华北、西北。此外,研究还表明我国南方和北方伐木制品碳储量分别以竹材制品和木材制品储存为主。

    Abstract:

    Forest ecosystem carbon budget is becoming a hotspot in global climate change research recently. Scientists all over the world have done many in-depth studies on this topic. However, the research on the carbon budget and the carbon stock trend of wood and bamboo products is lagging behind, especially in China. Some foreign scientists have already begun to study these issues, especially about the carbon stocks and trends of harvested wood product (HWP). However, a few of them is about HWP carbon stock in China. In this study, by taking the harvested wood products disposal situations into account and setting 2000 as the base year, the net carbon stock of HWP produced in China from 2000 to 2009 was calculated by the atmospheric-flow approach. The results showed that HWP is a huge carbon sink, which has been expanding continuously. The study also showed that the net carbon stock of HWP in 2009 was about 306.52TgC in China, among which the net carbon stock of non-paper wood products, paper, bamboo product is 114.71TgC、4.33TgC and 199.07TgC respectively. However, the wood fuel combustion released 11.60TgC, and the other HWP released 37.76TgC. The carbon stock of the end HWP reached to 318.12TgC in 2009, of which the carbon storage of the end wood products and bamboo products accounts for 37.42% and 62.58% respectively. For the end wood products, there was 114.71Tg carbon stored in non-paper wood products, accounting for 96.36%, and the rest carbon (about 4.33TgC) was stored in Paper. Moreover, the results also showed that the new HWP carbon stock was 25.21TgC/a from 1999 to 2003 and accounted for 15% of the net forest carbon sink for the same period estimated by Fang, which indicated that HWP plays an important role in maintaining carbon balance for the global carbon cycling and its equilibrium. The results also illustrated that the carbon stored in the bamboo products was 1.67 times more than that in the wood products, which means that bamboo products were an important carbon pool and it accounted for one large proportion in China. In addition, according to the end HWP carbon stock, China can be divided into three parts, namely the high, middle and low HWP carbon stock areas. The high end HWP carbon stock area, covering Fujian, Zhejiang, Hunan, Yunnan, Guangxi and Jiangxi Provinces, accounts for 67% of the country's HWP carbon stock. The middle HWP carbon stock area includes Anhui, Guangdong, Hubei, Sichuan, Heilongjiang and Jilin provinces, and Inner Mongolia autonomous region. And the rest of China belongs to the low HWP carbon stock area. The carbon storage in the end HWP is highest in Eastern China, followed by Central China, South China, Southwest China, Northeast China and North China, and the lowest end HWP carbon stock was located in Northwest China, which was very different from the forest carbon storage in China. Furthermore, the results illustrated that the carbon of HWP is mainly storied in the bamboo products in southern China, compared to in the wood products in northern China.

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伦飞,李文华,王震,白艳莹,杨艳刚.中国伐木制品碳储量时空差异.生态学报,2012,32(9):2918~2928

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