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当前位置: 首页 > 文章 > 辽西北风沙区不同人工植被土壤水分变化特征 山西农业科学 2015 (5) 588-591
Position: Home > Articles > Studies on Soil Moisture Variation Characteristics of Different Artificial Vegetation in Liaoning Northwest Sandy Area Journal of Shanxi Agricultural Sciences 2015 (5) 588-591

辽西北风沙区不同人工植被土壤水分变化特征

作  者：
孙晓辉
单  位：
辽宁省固沙造林研究所
关键词：
风沙区;人工植被;水分状况;变化;特征
摘  要：
采用定位监测的方法,对辽宁西北风沙区有防护林农田、无防护林农田、樟子松固沙林和灌草植被进行了土壤水分动态研究。结果表明,大气蒸发力和植被类型是影响土壤水分状况的主导因子,4种样地无防护林农田因缺少防护,大气水分蒸发强,作物栽培密度大,导致植物蒸腾强烈,后期水分补充不足,出现深层土壤水分含量显著下降;灌草植被覆盖率高、植物根系分布范围广,土壤水分消耗较大;樟子松固沙林根系主要利用深层60~100 cm土壤水分,平均土壤含水量低于有防护林农田和灌草植被。
译  名：
Studies on Soil Moisture Variation Characteristics of Different Artificial Vegetation in Liaoning Northwest Sandy Area
作  者：
SUN Xiao-hui;Institute of Dune-Fixating and Afforestation in Liaoning Province;
关键词：
sandy area;;artificial vegetation;;water status;;variation;;characteristics
摘  要：
Using the method of locating and monitoring to study soil moisture dynamics in the farmland with shelter belt, the farmland without shelter belt, the Pinus sylvestris var. mongolica sand fixation forest, and shrub and grass vegetation in Liaoning northwest sandy area. The results show that atmosphere evaporation capacity and vegetation types are the dominant factors affecting soil water status. For the lack of protection, atmospheric moisture evaporation is strong in the farmland without shelter belt. The high crops planting density causes the plant transpire strongly, water supplement is insufficient on later stage, deep soil moisture content descends significantly. While with high shrub and grass vegetation coverage rate, wide plant root distribution range, and soil water consumption is relatively large. The Pinus sylvestris var. mongolica sand fixation forest roots mainly use soil moisture deep in 60- 100 cm, the average soil moisture content is lower than that of farmland with shelter belt and shrub and grass vegetation.

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