Response of labile soil organic matter to changes in forest vegetation in subtropical regions
文献类型：期刊论文
| 作者 | Wang, Qingkui1; Wang, Silong1,2 |
| 刊名 | APPLIED SOIL ECOLOGY
 |
| 出版日期 | 2011-03-01 |
| 卷号 | 47期号:3页码:210-216 |
| 关键词 | Soil Microbial Biomass Water-soluble Soil Organic Matter Density Fractionation Tree Species |
| ISSN号 | 0929-1393 |
| DOI | 10.1016/j.apsoil.2010.12.004 |
| 英文摘要 | Labile soil organic matter (SUM) can sensitively respond to changes in land use and management practices, and has been suggested as an early and sensitive indicator of SOM. However, knowledge of effects of forest vegetation type on labile SUM is still scarce, particularly in subtropical regions. Soil microbial biomass C and N. water-soluble soil organic C and N. and light SUM fraction in four subtropical forests were studied in subtropical China. Forest vegetation type significantly affected labile SOM. Secondary broadleaved forest (SBF) had the highest soil microbial biomass, basal respiration and water-soluble SUM, and the pure Cunninghamia lanceolata plantation (PC) the lowest. Soil microbial biomass C and N and respiration were on average 100%, 104% and 75%, respectively higher in the SBF than in the PC. The influence of vegetation on water-soluble SUM was generally larger in the 0-10 cm soil layer than in the 10-20 cm. Cold- and hot-water-soluble organic C and N were on average 33-70% higher in the SBF than in the PC. Cold- and hot-soluble soil organic C concentrations in the coniferous-broadleaved mixed plantations were on average 38.1 and 25.0% higher than in the pure coniferous plantation, and cold- and hot-soluble soil total N were 51.4 and 14.1% higher, respectively. Therefore, introducing native broadleaved trees into pure coniferous plantations increased water-soluble SOM. The light SUM fraction (free and occluded) in the 0-10 cm soil layer, which ranged from 11.7 to 29.2 g kg(-1) dry weight of soil, was strongly affected by vegetation. The light fraction soil organic C, expressed as percent of total soil organic C, ranged from 18.3% in the mixed plantations of C. lanceolata and Kalopanax septemlobus to 26.3% in the SBF. In addition, there were strong correlations among soil organic C and labile fractions, suggesting that they were in close association and partly represented similar C pools in soils. Our results indicated that hot-water-soluble method could be a suitable measure for labile SUM in subtropical forest soils. (C) 2010 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000288568400009 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://210.72.129.5/handle/321005/121983]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Wang, Qingkui |
| 作者单位 | 1.Chinese Acad Sci, Huitong Expt Stn Forest Ecol, Inst Appl Ecol, Shenyang 110016, Peoples R China 2.Huitong Natl Res Stn Forest Ecosyst, Huitong 418307, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qingkui,Wang, Silong. Response of labile soil organic matter to changes in forest vegetation in subtropical regions[J]. APPLIED SOIL ECOLOGY,2011,47(3):210-216. |
| APA | Wang, Qingkui,&Wang, Silong.(2011).Response of labile soil organic matter to changes in forest vegetation in subtropical regions.APPLIED SOIL ECOLOGY,47(3),210-216. |
| MLA | Wang, Qingkui,et al."Response of labile soil organic matter to changes in forest vegetation in subtropical regions".APPLIED SOIL ECOLOGY 47.3(2011):210-216. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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