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甘肃省林业科学研究院, 甘肃 兰州 730070
Received:25 August 2025,
Revised:2025-11-16,
Published:28 April 2026
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马驰, 莫保儒, 马全林, 等.典型黄土区人工林土壤水分与养分的区域特征[J].水土保持通报,2026,46(2):86-99.
Ma Chi, Mo Baoru, Ma Quanlin, et al. Regional characteristics of soil moisture and nutrients under artificial forests in typical loess regions [J]. Bulletin of Soil and Water Conservation,2026,46(2):86-99.
马驰, 莫保儒, 马全林, 等.典型黄土区人工林土壤水分与养分的区域特征[J].水土保持通报,2026,46(2):86-99. DOI: 10.13961/j.cnki.stbctb.2026.02.026. CSTR: 32312.14.stbctb.2026.02.026.
Ma Chi, Mo Baoru, Ma Quanlin, et al. Regional characteristics of soil moisture and nutrients under artificial forests in typical loess regions [J]. Bulletin of Soil and Water Conservation,2026,46(2):86-99. DOI: 10.13961/j.cnki.stbctb.2026.02.026. CSTR: 32312.14.stbctb.2026.02.026.
目的
2
分析黄土区不同人工林土壤水分和养分的变化规律,全面评估植被恢复对生态系统结构和功能的影响,为区域人工林可持续经营提供科学依据。
方法
2
以甘肃省典型黄土区人工林样地为研究对象,运用2022年8—9月各区域典型人工林地土壤水分和土壤养分数据,分析黄土区不同人工林地土壤水分和养分的分布特征,探讨不同区域人工林土壤水分和土壤养分的差异性。
结果
2
①各区域不同人工林土壤含水量随土层深度的增加而降低,干燥化逐步加深,但当人工林进入成熟或衰老阶段后,土壤水分有所恢复。在空间上,甘肃省黄土区人工林土壤含水量从北到南、从西向东呈增加趋势。 ②各区域大部分土壤呈碱性,有机质、全氮、全磷、全钾含量较低;碱解氮含量陇西县最大,镇原县最低;速效磷含量合水县最大,天水市最低;速效钾含量合水县最大,镇原县最低。
结论
2
黄土区在植被恢复过程中,应根据不同微地形的土壤水分与养分分布特征,结合“适地适树”的种植原则,合理配置乔、灌、草的营建模式,改良土壤环境。
Objective
2
The variation patterns of soil moisture and nutrients under different artificial forests in the Loess Plateau were analyzed, and the impact of vegetation restoration on ecosystem structure and function was comprehensively evaluated, in order to provide a scientific basis for the sustainable management of regional artificial forests.
Methods
2
Typical artificial forest plots in loess regions of Gansu Province were selected as research subjects. Using soil moisture data at a depth of 6 meters and soil nutrient data at a depth of 1 meter collected from various regions between August and September 2022, the distribution characteristics of soil moisture and nutrients under different artificial forests in loess regions were analyzed, and the differences in soil moisture and nutrients under artificial forests across different regions were explored.
Results
2
① In different regions, soil moisture profiles under artificial forests gradually decreased with increasing soil depth, indicating a progressive drying process. However, when artificial forests reached maturity or aging stages, soil moisture partially recovered. Geographically, in loess regions of Gansu Province, the average soil moisture under artificial forests showed an increasing trend from north to south and from west to east. ② In terms of soil nutrients, most soils in each region were alkaline, with low contents of organic matter, total nitrogen, total phosphorus, and total potassium. Alkali-hydrolyzable nitrogen was highest in Longxi County and lowest in Zhenyuan County. Available phosphorus was highest in Heshui County and lowest in Tianshui County. Available potassium was highest in Heshui County and lowest in Zhenyuan County.
Conclusion
2
During vegetation restoration in the Loess Plateau, soil moisture and nutrient distribution characteristics of different microtopographies should be considered, and the planting principle of ‘right tree in the right place’ should be followed to reasonably configure tree, shrub, and grass planting patterns to improve the soil environment. This approach plays a positive role in ecological management in the Loess Plateau.
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