[1]MIAO Ling,DONG Jianguo,WANG Youke,et al.Soil Water in Deep Layers Under Different Land Use Patterns in the Loess Hilly and Gully Region[J].Research of Soil and Water Conservation,2016,23(02):13-18.
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Soil Water in Deep Layers Under Different Land Use Patterns in the Loess Hilly and Gully Region
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 02
Page number:
13-18
Column:
Public date:
2016-04-28
- Title:
- Soil Water in Deep Layers Under Different Land Use Patterns in the Loess Hilly and Gully Region
- CLC:
- S152.7
- DOI:
- -
- Abstract:
- In the Loess Hilly and Gully Region where climatic conditions are dry with severe water shortage, several plants causes soil dessication and ecological degradation. In order to compare the differences and characteristics of deep soil water under different land use patterns, relevant water moisture data in 0—900 cm soil layers was analyzed through May 2013 to November 2014. Results showed that: (1) the soil profile under different land use patterns could be divided into two layers according to the vertical variation. The upper content changed dramatically, and the deep soil moisture was stable; the temporal variations of the upper soil water were accordance with the change of rainfall in the wet season, it represented the depths of rainfall infiltration and plant-root water uptake, the depths of rainfall infiltration for jujube, almond, alfalfa and farmland were 240, 200, 180 and 120 cm, respectively; (2) soil water in deep layers changed little within a year, soil water contents of alfalfa grassland, jujub and almonds decreased slightly, however, crops had a shallow root system, utilization of deep layer soil water was limited; the water environment in deep soil layers was significantly affected by plant types, and the effect degrees decreased in the order: alfalfa grassland > jujube > almonds > farmland; (3) alfalfa grassland had led to the serious soil moisture deficit, the average degree was 67.7%, and jujube and almonds were 55.4%, 48.7%, respectively. It is vital to investigate temporal variability of deep soil moisture for the restoration, reconstruction and evaluation of vegetation in the Loess Plateau.
- References:
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