Characterizing Scale- and Location-Dependent Correlation of Water Retention Parameters with Soil Physical Properties Using Wavelet Techniques
文献类型：期刊论文
| 作者 | Shu, QS; Liu, ZX; Si, BC; Liu, ZX, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 刊名 | JOURNAL OF ENVIRONMENTAL QUALITY
 |
| 出版日期 | 2008 |
| 卷号 | 37期号:6页码:2284-2292 |
| ISSN号 | 0047-2425 |
| 英文摘要 | Understanding the correlation between soil hydraulic parameters and soil physical properties is a prerequisite for the prediction of soil hydraulic properties from soil physical properties. The objective of this study was to examine the scale- and location-dependent correlation between two water retention parameters (alpha and n) in the van Genuchten (1980) function and soil physical properties (sand content, bulk density [Bd], and organic carbon content) using wavelet techniques. Soil samples were collected from a transect from Fuxin, China. Soil water retention curves were measured, and the van Genuchten parameters were obtained through curve fitting. Wavelet coherency analysis was used to elucidate the location- and scale-dependent relationships between these parameters and soil physical properties. Results showed that the wavelet coherence between alpha and sand content was significantly different front red noise at small scales (8-20 m) and from a distance of 30 to 470 m. Their wavelet phase spectrum was predominantly out of phase, indicating negative correlation between these two variables. The strong negative correlation between a and Bd existed mainly at medium scales (30-80 m). However, parameter n had a strong positive correlation only with Bd at scales between 20 and 80 m. Neither of the two retention parameters had significant wavelet coherency with organic carbon content. These results suggested that location-dependent scale analyses are necessary to improve the performance for soil water retention characteristic predictions. |
| 学科主题 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000260941800031 |
| 资助机构 | National Scientific and Technological Project in Increasing Grain Output in China [2006BAD 02A 12]; Chinese Academy of Sciences [KSCX2-YW-N-004]; Key Laboratory of Liaoning Water-saving Agriculture [05KJT21002] |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/54317]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Liu, ZX, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shu, QS,Liu, ZX,Si, BC,et al. Characterizing Scale- and Location-Dependent Correlation of Water Retention Parameters with Soil Physical Properties Using Wavelet Techniques[J]. JOURNAL OF ENVIRONMENTAL QUALITY,2008,37(6):2284-2292. |
| APA | Shu, QS,Liu, ZX,Si, BC,&Liu, ZX, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China.(2008).Characterizing Scale- and Location-Dependent Correlation of Water Retention Parameters with Soil Physical Properties Using Wavelet Techniques.JOURNAL OF ENVIRONMENTAL QUALITY,37(6),2284-2292. |
| MLA | Shu, QS,et al."Characterizing Scale- and Location-Dependent Correlation of Water Retention Parameters with Soil Physical Properties Using Wavelet Techniques".JOURNAL OF ENVIRONMENTAL QUALITY 37.6(2008):2284-2292. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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