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| 水分状况对紫色母岩发育的水稻土团聚体及有机碳分布影响 | |
| 引用本文： | 高明,张薇,王子芳,魏朝富,郑杰炳.水分状况对紫色母岩发育的水稻土团聚体及有机碳分布影响[J].土壤学报,2008,45(5):943-949. |
| 作者姓名： | 高明 张薇 王子芳 魏朝富 郑杰炳 |
| 作者单位： | 1. 西南大学资源环境学院,重庆,400716 2. 中国科学院西双版纳热带植物园昆明分部,昆明,650223 3. 重庆地质矿产研究院,重庆,400042 |
| 基金项目： | 国家科技支撑计划，重庆市自然科学基金 |
| 摘 要： | 在紫色丘陵区采集了因水分状况影响而形成的4种类型紫色水稻土土样,利用湿筛法获得不同粒径的团聚体,分析了其有机碳和不同土壤发生层中易氧化碳、微生物生物量碳和水溶性碳含量。结果表明,A层土壤中>2 mm的团聚体以潜育型水稻土和渗育型水稻土最高,分别占76.65%和75.92%,其次是潴育型水稻土占43.86%,淹育型水稻土只有13.10%;不同土壤发生层间土壤团聚体的组成也存在较大的差异;除潴育型水稻土的P层外,其余各层土壤的有机碳53.7%~96.2%均分布在>0.25 mm团聚体中;潜育型水稻土的微生物生物量碳和易氧化碳含量在4种水稻土中最高,分别为282.5 mg kg-1和6.59 g kg-1,水溶性有机碳则以渗育型水稻土最高;有机碳含量与>2 mm团聚体含量呈极显著正相关关系,与<0.25 mm微团聚体数量呈显著负相关关系。 |
| 关 键 词： | 水分状况 紫色水稻土 团聚体 有机碳 |
| 收稿时间： | 2007/11/29 0:00:00 |
| 修稿时间： | 3/6/2008 12:00:00 AM |
INFLUENCE OF SOIL WATER REGIME ON SIZE DISTRIBUTION OF AGGREGATES AND CONCENTRATION OF ORGANIC CARBON THEREIN IN PADDY SOILS DEVELOPED FROM PURPLE SOILS |
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| Gao Ming,Zhang Wei,Wang Zifang,Wei Chaofu and Zheng Jiebing.INFLUENCE OF SOIL WATER REGIME ON SIZE DISTRIBUTION OF AGGREGATES AND CONCENTRATION OF ORGANIC CARBON THEREIN IN PADDY SOILS DEVELOPED FROM PURPLE SOILS[J].Acta Pedologica Sinica,2008,45(5):943-949. | |
| Authors: | Gao Ming Zhang Wei Wang Zifang Wei Chaofu and Zheng Jiebing |
| Institution: | Gao Ming1 Zhang Wei2 Wang Zifang1 Wei Chaofu1 Zheng Jiebing3 (1 College of Resources , Environmental Sciences,Southwest University,Chongqing 400716,China) (2 Kunming Division,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Kunming 650223,China) (3 Chongqing Institute of Geology , Mineral Resources,Chongqing 400042,China) |
| Abstract: | Aggregation and soil organic carbon(SOC) concentration represent integrated effects of soil type,environment,plant species,and soil management practices.This study was conducted to assess effect of water regime on size distribution of soil aggregates and C concentrations therein in paddy soils developed under different water conditions from purple soils in a purple hilly area of the Sichuan basin.The labile organic carbon,microorganism biomass carbon,water dissolved carbon,and organic carbon concentration i... |
| Keywords: | Water regime Purple paddy soil Aggregates Organic carbon |
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