Effect of Land Use on Structural Stability and Pore Functions of an Andisol (Typic Hapludand) in Southern Chile
文献类型：期刊论文
| 作者 | Doerner, Jose1; Dec, Dorota1; Peng, Xinhua2; Horn, Rainer3 |
| 刊名 | REVISTA DE LA CIENCIA DEL SUELO Y NUTRICION VEGETAL
 |
| 出版日期 | 2009 |
| 卷号 | 9期号:3页码:190-209 |
| 关键词 | Andisol structural properties pore functions |
| ISSN号 | 0717-635X |
| 通讯作者 | Doerner, Jose(josedorner@uach.cl) |
| 英文摘要 | Volcanic soils in southern Chile cover approximately 60% of the arable land in the country. These soils are under a wide range of land uses from pristine systems to intensively used ones. The objective of this study was to determine the effect of the land use change on: i) the structural stability after external and internal forces, ii) the hydraulic conductivity and iii) its functional resilience. Disturbed and undisturbed soil samples were collected at 5, 20 and 40 cm depths in an Andisol (Typic Hapludand) under native forest (NF), 50 year old pasture (P50) and 1 year old pasture (PI). The water retention, shrinkage and consolidation curves, hydraulic conductivity (Ks), air permeability (Ka), organic carbon content (CO), soil texture and allophane contents were determined. The unsaturated hydraulic conductivity (Ku) was estimated according to van Genuchten (1980). Soil deformation indexes as a consequence of mechanical (COLEm) and hydraulic (COLE(h)) stresses were calculated. The studied soil is subject to continuous changes in their structure as a consequence of mechanical and hydraulic stresses affecting the pore size distribution and its functionality. The magnitude of these changes decreased with the increasing intensity of the land use. The great shrinkage capacity of the soil may have consequences on its hydraulic behaviour depending on the drying intensity through the formation of cracks and preferential path flows. Finally, the soil pores are able to recover its functional integrity after compaction, which is strongly related to the presence of organic matter contents. |
| 收录类别 | SCI |
| WOS关键词 | HYDRAULIC CONDUCTIVITY ; SOIL PROPERTIES ; DRYING CYCLES ; VOLUME CHANGE ; BULK-DENSITY ; SHRINKAGE ; AGGREGATE ; COMPACTION ; DYNAMICS ; CARBON |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000273003400003 |
| 出版者 | SOC CHILENA CIENCIA SUELO |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558772 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Doerner, Jose |
| 作者单位 | 1.Univ Austral Chile, Inst Ingn Agr & Suelos, Valdivia, Chile 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 3.Univ Kiel, Inst Pflanzenernahrung & Bodenkunde, D-24118 Kiel, Germany |
| 推荐引用方式 GB/T 7714 | Doerner, Jose,Dec, Dorota,Peng, Xinhua,et al. Effect of Land Use on Structural Stability and Pore Functions of an Andisol (Typic Hapludand) in Southern Chile[J]. REVISTA DE LA CIENCIA DEL SUELO Y NUTRICION VEGETAL,2009,9(3):190-209. |
| APA | Doerner, Jose,Dec, Dorota,Peng, Xinhua,&Horn, Rainer.(2009).Effect of Land Use on Structural Stability and Pore Functions of an Andisol (Typic Hapludand) in Southern Chile.REVISTA DE LA CIENCIA DEL SUELO Y NUTRICION VEGETAL,9(3),190-209. |
| MLA | Doerner, Jose,et al."Effect of Land Use on Structural Stability and Pore Functions of an Andisol (Typic Hapludand) in Southern Chile".REVISTA DE LA CIENCIA DEL SUELO Y NUTRICION VEGETAL 9.3(2009):190-209. |
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来源：南京土壤研究所
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