[1]ZHANG Juanjuan,SHAN Lishan,YANG Caihong,et al.Soil Moisture Dynamics of Reaumuria soongorica shrubs in Loess Hill and Gully region[J].Research of Soil and Water Conservation,2015,22(04):29-33.
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Soil Moisture Dynamics of Reaumuria soongorica shrubs in Loess Hill and Gully region
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 04
Page number:
29-33
Column:
Public date:
2015-08-28
- Title:
- Soil Moisture Dynamics of Reaumuria soongorica shrubs in Loess Hill and Gully region
- CLC:
- S152.7
- DOI:
- -
- Abstract:
- Soil moisture is the key factor for the growth and survival of vegetation in the loess hilly region. Soil moisture dynamics of Reaumuria soongorica population was monitored under different slope positions in the loess hill and gully region in Gansu Province of northwest China. The results showed that:(1) soil bulk density tended to increase at first and then decreased with increase of soil depth in different slope positions, the water holding capacity decreased in the order:upper slope > down slope > mid slope:(2) seasonal changes of soil moisture were expressed as dual peaks curve, and reached to the maximum at the first time in June, then increased a bit in August, according to soil moisture changes and plant root water absorption conditions, the vertical variation of soil moisture would be divided into three levels:active layer, less active layer and relative stable layer; (3) there were various degrees of dry soil layers in each month in loess hilly region, Dry soil layer is the most obvious in April and in the soil depth of 0—20 cm. Therefore, it is necessary to appropriately irrigate in April in the loess hilly and gully region when afforestation was carried out, and the density of planted trees should not be too large when afforestation was launched in rainy season.
- References:
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