Soil carbon changes following afforestation with Olga Bay larch (Larix olgensis Henry) in northeastern China
文献类型：SCI/SSCI论文
| 作者 | Shao B. |
| 发表日期 | 2006 |
| 关键词 | afforestation carbon sequestration China forest litter mineral soil Olga Bay larch former arable land organic-carbon forest nitrogen eucalyptus pinus ecosystems succession dynamics agriculture |
| 英文摘要 | After converting cropland to forest, carbon is sequestered in the aggrading biomass of the new forests, but the question remains, to what extent will the former arable soil contribute as a sink for CO2? Quantifying changes in soil carbon is an important consideration in the large-scale conversion of cropland to forest. Extensive field studies were undertaken to identify a number of suitable sites for comparison of soil properties under pasture and forest. The present paper describes results from a study of the effects of first rotation larch on soil carbon in seven stands in an afforestation chronosequence compared with adjacent Korean pine, pasture, and cropland. An adjacent 250-year-old natural forest was included to give information on the possible long-term changes in soil carbon in northeast China in 2004. Soil carbon initially decreased during the first 12 yr before a gradual recovery and accumulation of soil carbon occurred. The initial (0-12 yr) decrease in soil carbon was an average 1.2% per year among case studies, whereas the increase in soil carbon (12-33 yr) was 1.90% per year. Together with the carbon sequestration of forest floors, this led to total soil carbon stores of approximately 101.83 Mg/hm(2) over the 33-year chronosequence. Within the relatively short time span, carbon sequestration occurred mainly in tree biomass, whereas soil carbon stores were clearly higher in the 250-year-old plantation (184 Mg/hm(2)). The ongoing redistribution of mineral soil carbon in the young stands and the higher soil carbon contents in the 250-year-old afforested stand suggest that nutrient-rich afforestation soils may become greater sinks for carbon (C) in the long term. |
| 出处 | Journal of Integrative Plant Biology |
| 卷 | 48 |
| 期 | 5 |
| 页 | 503-512 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1672-9072 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22957]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Shao B.. Soil carbon changes following afforestation with Olga Bay larch (Larix olgensis Henry) in northeastern China. 2006. |
入库方式： OAI收割
来源：地理科学与资源研究所
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