| Microbial biomass dynamics and soil wettability as affected by the intensity and frequency of wetting and drying during straw decomposition | |
| Zhang, B.; Yao, S. -H.; Hu, F. | |
| 刊名 | EUROPEAN JOURNAL OF SOIL SCIENCE
 |
| 2007-12-01 | |
| 卷号 | 58期号:6页码:1482-1492 |
| ISSN号 | 1351-0754 |
| DOI | 10.1111/j.1365-2389.2007.00952.x |
| 通讯作者 | Zhang, B.(bzhang@issas.ac.cn) |
| 英文摘要 | Water repellency is influenced by soil management and biological process. We carried out a 60-day laboratory incubation experiment to evaluate the effects of straw amendment, together with the intensity and frequency of wetting and drying (W/D), on microbial processes and water repellency. One W/D cycle consisted of 1.5-day wetting at -0.03 kPa from the soil core bottom and different drying lengths in a temperature-controlled laboratory, resulting in different drying intensities. At a regular interval, soil respiration rate (SRR) on drying and wetting, soil microbial biomass C and N (SMB-C and N), and soil water repellency (SWR) after the wetting were measured simultaneously. Rice straw amendment had a greater effect on SRR, but smaller influences on SMB and SMB-C : N than W/D frequency and drying intensity. The first W/D caused the largest decrease in soil respiration and the soil respiration recovered partly in the subsequent W/D cycles. The increase in SMB and SMB-C : N as well as metabolic quotient with W/D frequency and intensity suggested a shift of microbial community from bacterial dominance to fungal dominance. SWR was significantly related to SMB-C (R-2 = 0.689, P < 0.001). However, this study was limited to these indirect measurements. Direct measurements of fungal biomass and microbial community are needed in the future. The results suggest that rice straw amendment in dry season may increase C sequestration due to reduced decomposition and stabilize soil structure due to the enhancement of microbial induced water repellency. |
| 收录类别 | SCI |
| WOS关键词 | WATER REPELLENCY ; ORGANIC-MATTER ; ENVIRONMENTAL-CONDITIONS ; AGGREGATE STABILITY ; COMMUNITY DYNAMICS ; FOREST SOILS ; NITROGEN ; CARBON ; CYCLES ; MANAGEMENT |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | BLACKWELL PUBLISHING |
| WOS记录号 | WOS:000251026300025 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2558623 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhang, B. |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Nanjing Agr Univ, Coll Nat Resource & Environm, Inst Soil Ecol, Nanjing 210079, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, B.,Yao, S. -H.,Hu, F.. Microbial biomass dynamics and soil wettability as affected by the intensity and frequency of wetting and drying during straw decomposition[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2007,58(6):1482-1492. |
| APA | Zhang, B.,Yao, S. -H.,&Hu, F..(2007).Microbial biomass dynamics and soil wettability as affected by the intensity and frequency of wetting and drying during straw decomposition.EUROPEAN JOURNAL OF SOIL SCIENCE,58(6),1482-1492. |
| MLA | Zhang, B.,et al."Microbial biomass dynamics and soil wettability as affected by the intensity and frequency of wetting and drying during straw decomposition".EUROPEAN JOURNAL OF SOIL SCIENCE 58.6(2007):1482-1492. |
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