| 内蒙古圪秋沟流域不同林分类型对土壤养分含量的影响 |
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| 引用本文： | 刘晓民,白嘉骏,杨耀天,于澜.内蒙古圪秋沟流域不同林分类型对土壤养分含量的影响[J].土壤通报,2023,54(2):328-335. |
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| 作者姓名： | 刘晓民 白嘉骏 杨耀天 于澜 |
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| 作者单位： | 1.内蒙古农业大学水利与土木建筑工程学院，呼和浩特 010018 |
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| 基金项目： | 内蒙古自治区科技重大专项（2021ZD0008）、内蒙古自治区自然基金项目（2021MS05042）和国家自然科学基金项目（51969021,52169016）资助 |
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| 摘 要： | 目的 为探明不同林分类型对圪秋沟流域土壤养分的影响。 方法 于2013 ~ 2021年在准格尔旗圪秋沟流域以8a生的樟子松林、山桃林、油松林、杨树柠条混交林、油松侧柏混交林和沙棘山杏混交林以及未种植植物的对照区域（CK处理）7个样地为研究对象，测定不同林分类型不同土层深度的土壤有机碳、全氮、速效磷和速效钾含量，研究其土壤养分含量变化规律，探讨不同林分类型与土壤改良的效应关系。 结果 与CK处理相比，0 ~ 20 cm和20 ~ 40 cm深度不同林分类型土壤有机碳含量提升了11.11% ~ 53.55%和9.91% ~ 49.56%、土壤全氮含量分别提升了4.86% ~ 54.15%和10.38% ~ 59.73%、土壤速效磷含量分别提升了36.84% ~ 160.53%和45.71% ~ 117.14%、土壤速效钾含量分别提高了12.32% ~ 67.95%和19.50% ~ 66.32%。 结论 8 a生不同林分类型均在不同程度上提升了土壤养分水平；与杨树柠条混交林、油松侧柏混交林和沙棘山杏混交林相比，樟子松林、山桃林、油松林对土壤养分含量提升效果最好。今后可在保证森林生态平衡前提下，适当在圪秋沟流域加大对上述三种林分类型的种植力度。人工林的种植对圪秋沟流域土壤改良具有积极作用，为碳中和背景下人工林土壤养分循环研究和圪秋沟流域人工林选育提供了一定参考依据。
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| 关 键 词： | 人工林 圪秋沟 土壤养分 |
| 收稿时间： | 2022-02-26 |
Effects of Different Stand Types on Soil Nutrient Contents in Geqiugou Watershed of Inner Mongolia |
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| Institution: | 1.Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot 010018, China2.Inner Mongolia Yellow River Institute of Ecological Research, Hohhot 010020, China3.Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River, Hohhot 010018, China4.Inner Mongolia Autonomous Region Hydrology and Water Resources Center, Hohhot 010010, China |
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| Abstract: | Objective The aims were to find out the effect of different stand types on soil nutrients in the Geqiugou watershed. Method The 8-year-old Pinus sylvestris forest, mountain peach forest, seven plots of pine forest, tree-shrub forest, mixed forest of pine and arborvitae, mixed forest of sea buckthorn and apricot, and control area without planting plants (CK treatment) were selected as the research objects, and the soil organic of different stand types at different soil depths was determined. Total nitrogen, available phosphorus and available potassium contents were used to study the change law of soil nutrient contents, and to explore the effect relationship between different stand types and soil improvement. Result The results showed that soil organic content of different stand types at 0 - 20 cm and 20 - 40 cm depth increased by 11.11% - 53.55% and 9.91% - 49.56%, and soil total nitrogen content was increased by 4.86% - 54.15% and 10.38% - 59.73%, soil available phosphorus content increased by 36.84% - 160.53% and 45.71% - 117.14%, soil available potassium content increased by 12.32% - 67.95% and 19.50% - 66.32%, respectively. Conclusion Different stand types with 8-year old increased soil nutrient levels to varying degrees. Compared with the mixed forest of Poplar Caragana, P. The improvement effect was the best. In the future, on the premise of ensuring the ecological balance of the forest, the planting of the above three stand types could be appropriately increased in the Geqiugou watershed. The research has provided a certain reference on soil nutrient cycling of plantation under the background of carbon neutrality and the selection and breeding of plantation in the Geqiugou watershed |
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