Stability of soil organic carbon changes in successive rotations of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) plantations
文献类型：期刊论文
| 作者 | Zhang Jian; Wang Silong; Feng Zongwei; Wang Qingkui |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2009 |
| 卷号 | 21期号:3页码:352-359 |
| 关键词 | Chinese fir plantation forest soils organic carbon microbial property biochemical quality density fractionation |
| 中文摘要 | The importance of soil organic carbon (SOC) under forests in the global carbon cycle depends on the stability of the soil carbon and its availability to soil microbial biomass. We investigated the effects of successive rotations of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) plantations on the stability of SOC and its availability to microbes by adopting the two-step hydrolysis with H2SO4 and density fractionation. The results showed that successive rotations of Chinese fir decreased the quantity of total SOC, recalcitrant fraction, and carbohydrates in Labile Pool I (LP I), and microbial properties evidently, especially at 0-10 cm horizon. However, cellulose included in Labile Pool II (LPII) and the cellulose/total carbohydrates ratio increased in successive rotations of Chinese fir. The non-cellulose of carbohydrates included in LP I maybe highly available to soil microbial biomass. Hence the availability of SOC to microbial biomass declined over the successive rotations. Although there was no significant change in recalcitrance of SOC over the successive rotations of Chinese fir, the percentage of heavy fraction to total SOC increased, suggesting that the degree of physical protection for SOC increased and SOC became more stable over the successive rotations. The degradation of SOC quality in successive rotation soils may be attributed to worse environmental conditions resulted from disturbance that related to "slash and bum" site preparation. Being highly correlated with soil microbial properties, the cellulose/total carbohydrates ratio as an effective indicator of changes in availability of SOC to microbial biomass brought by management practices in forest soils. |
| WOS记录号 | WOS:000264381900014 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21416]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang Jian,Wang Silong,Feng Zongwei,et al. Stability of soil organic carbon changes in successive rotations of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) plantations[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2009,21(3):352-359. |
| APA | Zhang Jian,Wang Silong,Feng Zongwei,&Wang Qingkui.(2009).Stability of soil organic carbon changes in successive rotations of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) plantations.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,21(3),352-359. |
| MLA | Zhang Jian,et al."Stability of soil organic carbon changes in successive rotations of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) plantations".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 21.3(2009):352-359. |
入库方式： OAI收割
来源：生态环境研究中心
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