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在内蒙古砒砂岩典型地区的准格尔旗东一支沟开展了小型人工沙棘植物林水保生态效应野外试验。根据试验数据,分析与研究了沙棘植物对沟道土壤有机质及土壤含水率的影响,揭示了沙棘植物对砒砂岩沟道土壤改良及对沟道土壤水分的调控效应,可为沙棘植物治理砒砂岩地区水土流失提供理论依据。结果表明:小型人工沙棘林的土壤剖面(0～100cm)有机质平均值约是对比沟土壤有机质均值的2倍,沙棘植物可显著提高并改善沟道土壤肥力。沙棘植物影响了有机质沿土壤剖面分布格局,各小型人工沙棘林土壤有机质沿土壤剖面(0～100cm)分布表现为大“U”型,而对比沟土壤有机质沿土壤剖面(0～100cm)分布表现为“L”型。各小型人工沙棘林沿土壤剖面(0～100cm)的土壤含水率平均值约是对比沟的1.37倍,都显著大于对比沟。沙棘植物对沟道土壤含水率具有明显调节作用,能有效增加沟床地下土壤水库库容,有利于沟床植物群落的生长,发挥沙棘植物拦沙保水、抑制土壤侵蚀的功能。
A pilot study was conducted on the ecological effects of small-scale artificial seabuckthorn plants and water conservation in Zhungeer County, East China, in a typical area of 砒 sandstone in Inner Mongolia. According to the experimental data, the influence of seabuckthorn plants on soil organic matter and soil moisture content in channel soil was analyzed and studied. The effect of seabuckthorn plants on the soil improvement of channel sandstone and the regulation of channel soil moisture was revealed. Regional Soil and Water Loss to provide a theoretical basis. The results showed that the average organic matter in the soil profiles (0-100 cm) of the small-scale artificial seabuckthorn forest was about twice that of the average organic matter in the ditch soil, and the seabuckthorn plants could significantly improve and improve the channel soil fertility. Seabuckthorn plants affected the profile of soil organic matter distribution along the soil profile. The distribution of soil organic matter along the soil profile (0-100 cm) showed a large “U ” pattern in all the artificial seabuckthorn forests, while the soil organic matter along the soil profile (0-100 cm) Distribution showed “L” type. The average soil water content along the soil profile (0 ~ 100 cm) of each artificial seabuckthorn forest was about 1.37 times that of the contrast ditch, which was significantly larger than that of the contrast ditch. Seabuckthorn plants play a significant role in regulating the soil moisture content of the channel, which can effectively increase the storage capacity of the underground soil in the ditch beds, which is beneficial to the growth of the ditches and plant communities, and plays the role of sand-seabuckthorn plants in blocking sand and reserving water and inhibiting soil erosion.