| Seasonal change of soil water repellency in Inner Mongolia grassland |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2010.02.43 |
| Key Words: grassland utilization patterns grassland soil soil water repellency |
| Author Name | Affiliation | | LI Zizhong | Department of Soil and Water Sciences, College of Resources and Environment Sciences, China Agricultural University, Beijing 100094, China | | WU Yanlei | Department of Soil and Water Sciences, College of Resources and Environment Sciences, China Agricultural University, Beijing 100094, China | | GONG Yuanshi | Department of Soil and Water Sciences, College of Resources and Environment Sciences, China Agricultural University, Beijing 100094, China | | WANG Zhongyan | Department of Soil and Water Sciences, College of Resources and Environment Sciences, China Agricultural University, Beijing 100094, China |
|
| Hits: 235 |
| Download times: 189 |
| Abstract: |
| Soil water repellency is a physical phenomenon in which water can not or be very difficult to wet the soil surface, and the soil is called water repellent soil. The study area was the Leymus chinensis steppe plot of Inner Mongolia grassland ecosystem research station of the Chinese Academy of Sciences, located in the Baiyinxile pasture in Xilinhaote of the Inner Mongolia. The objective of this study was to find out soil water repellency in grasslands of Inner Mongolia as influenced by different grassland utilization patterns (including ungrazed since 197
9 and 1999, winter grazing and continuous grazing) using water drop penetration time (WDPT). The results showed that the slightly hydrophobic or hydrophilic soi
l samples were often observed, and soil water repellency showed stronger during rainy season or rainy year than during no rainy season or dry year. And its seasonal change was affected by grazing intensity, which is that many dydrophobic soil samples are found earlier in continuous grazing plot, later in winter grazing plot and ungrazing plot since 1999, then in ungrazing plot since 1979. |
|
|
|