| 引用本文: | 杨 越,吴才武,杨依天,等.冀北坝上地区不同人工植被土壤水分变化特征[J].灌溉排水学报,0,():-. |
| YANG Yue,WU Cai-wu,YANG Yitian,et al.冀北坝上地区不同人工植被土壤水分变化特征[J].灌溉排水学报,0,():-. |
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| 冀北坝上地区不同人工植被土壤水分变化特征 |
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杨 越, 吴才武, 杨依天, 武智勇, 孙百生, 张月丛
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河北民族师范学院 资源与环境科学系
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| 摘要: |
| 土壤水分是影响植被恢复与重建的关键因素。【目的】探讨不同人工植被对土壤水分的影响,为植被恢复与生态建设提供科学依据。【方法】选取冀北坝上地区退耕还林地为研究对象,以退耕封育草地为对照,采用土钻取样烘干法测定土壤水分,对比分析三种不同人工植被样地(沙棘林、柠条林、榆树林)0~100cm的土壤水分变化特征。【结果】雨季(6月、7月、8月)三种退耕还林地0~100cm土壤含水量高于封育草地,有利于土壤水分保持；旱季(5月、9月、10月)则低于封育草地,加剧土壤水分消耗。封育草地浅表层0~20cm土层含水量下降明显,沙棘林地0~40cm土层水分消耗明显,柠条林地30~60cm土层水分消耗明显,榆树林地20~100cm土层水分持续消耗。【结论】不同人工植被土壤水分随季节变化存在显著差异,随土层深度的变化具有明显趋势特征；人工恢复植被必须充分考虑区域降水、温度、土壤等环境条件,遵循自然地带性规律,因地制宜合理布局。 |
| 关键词: 人工植被;土壤水分;变化特征;坝上地区 |
| DOI： |
| 分类号:S152.7 S714.2 |
| 基金项目:河北省自然科学基金(C2015101020)；河北省高等学校科学技术研究项目(QN2015320)；河北省自然科学基金,(E2019101012)。 |
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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 Cai-wu, YANG Yitian, WU Zhiyong, SUN Baisheng, ZHANG Yuecong
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Department of Resources and Environmental Sciences,Heibei Normal University for Nationalities
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| Abstract: |
| 【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 0~100cm under 3 different modes of returning farmland to forestland (Hippophae rhamnoides Linn., Caragana korshinskii., Ulmus pumila 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 0~100cm 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 0~20cm soil layer under enclosed grassland was obviously decreased, and the water consumption of 0~40cm soil layer under Hippophae rhamnoides Linn.forestland was obvious, the water consumption of 30~60cm soil layer under Caragana korshinskii.forestland was obvious, and the water content of the 20~100cm soil layer under Ulmus pumila L. forestland was continuously consumed.【Conclusion】It can be seen that 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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