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| DOI：10.13522/j.cnki.ggps.2019252 |
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| Soil Moisture Variation Characteristics of Different Artificial Vegetation in Bashang Area of Northern Hebei |
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YANG Yue, WU Caiwu*, YANG Yitian, WU Zhiyong, SUN Baisheng, ZHANG Yuecong
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Department of Resources and Environmental Sciences, Heibei Normal University for Nationalities, Chengde 067000, China
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| Abstract: |
| 【Background】The Bashang area in northern Hebei is located at the southern edge of Inner Mongolia plateau. It was connected with the Inner Mongolia plateau in the north and extends to the northern Beijing plain in the south. The shortage of water resources, cold and dry climate, scarce precipitation, fragile ecological environment and unreasonable human activities in recent decades had led to increasingly serious environmental problems such as soil erosion and land degradation.【Objective】Soil moisture is a key factor affecting vegetation restoration and reconstruction. In order to know the effects of different artificial vegetation on soil moisture, which provided scientific basis for vegetation restoration and ecological construction. 【Method】 The soil moisture changes of 0~100 cm under 3 different modes of returning farmland to forestland (Hippophaerhamnoides Linn., Caraganakorshinskii., Ulmuspumila L.) in Bashang area of northern Hebei were compared and analyzed, by taking the enclosed grassland as the control.【Result】The soil moisture of different artificial vegetation varied significantly with the seasons; In rainy season (June, July, August), the soil water contents of 0~100 cm under 3 different modes of returning farmland to forestland were higher than that of the enclosed grassland, which was conducive to soil moisture conservation; In dry season (May, September, October), it was lower than that of enclosed grassland, which increased soil water consumption. The soil moisture of different artificial vegetations had obvious trend characteristics with the change of soil depth. The water content of 0~20 cm soil layer under enclosed grassland was obviously decreased, and the water consumption of 0~40 cm soil layer under Hippophaerhamnoides Linn. forestland was obvious, the water consumption of 30~60 cm soil layer under Caraganakorshinskii. forestland was obvious, and the water content of the 20~100 cm soil layer under Ulmuspumila L. forestland was continuously consumed.【Conclusion】The artificial restoration of vegetation in Bashang area of northern Hebei must fully consider the regional precipitation, temperature, soil and other environmental conditions, follow the natural zonal law, and make rational distribution according to local conditions. |
| Key words: artificial vegetation; soil moisture; variation characteristics; bashang area |
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