| 重庆山区不同土地利用下的土壤肥力质量研究 |
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| 引用本文： | 叶润根,陈国建,王震,何谦,张春叶.重庆山区不同土地利用下的土壤肥力质量研究[J].四川林业科技,2021(1):29-34. |
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| 作者姓名： | 叶润根 陈国建 王震 何谦 张春叶 |
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| 作者单位： | 重庆师范大学地理与旅游学院 |
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| 基金项目： | 国家自然科学基金项目“紫色土坡耕地土石复合坎结构与水土保持效应研究”(41471234)。 |
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| 摘 要： | 该文旨在揭示重庆市山区小流域不同土地利用方式下的土壤肥力状况,为土壤培肥管理提供依据。以重庆市南川区山区小流域为例,选取3种不同的土地利用方式,共采集样品81个,结合主成分分析法与隶属度函数,分析山区小流域的土壤养分状况与肥力质量水平。结果表明,研究区土壤酸化严重,林地的有机质含量最高,旱地全氮、全磷和速效磷较为丰富,而全钾与速效钾则普遍缺乏;土壤综合肥力指数处于0.2~0.9之间,平均值0.54,研究区土壤肥力质量为中等偏低,不同土地利用下的肥力质量排序为旱地(0.57)>林地(0.51)>水田(0.48),旱地肥力水平较高,可见人为管理措施、土壤科学培肥的重要,而林地高于闲置农田表明适当退耕还林的重要性。
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| 关 键 词： | 土壤养分 土壤肥力 综合评价 小流域 |
Research on Soil Fertility Quality under Different Land Use Types in Mountainous Areas of Chongqing |
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| YE Rungen,CHEN Guojian,WANG Zhen,HE Qian,ZHANG Chunye.Research on Soil Fertility Quality under Different Land Use Types in Mountainous Areas of Chongqing[J].Journal of Sichuan Forestry Science and Technology,2021(1):29-34. |
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| Authors: | YE Rungen CHEN Guojian WANG Zhen HE Qian ZHANG Chunye |
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| Institution: | (College of Geography and Tourism,Chongqing Normal University,Chongqing 401331,China) |
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| Abstract: | The aim of this study is to reveal the soil fertility status under different land use types in a small mountainous watershed in Chongqing,and to provide a basis for soil fertility management.Three different land use types were selected and a total of 81 samples were collected to analyze the soil nutrient status and fertility quality in a small mountainous watershed in Nanchuan District,Chongqing.The results showed that the soil in the study area was severely acidified,and forest land had the highest organic matter content.Total nitrogen,total phosphorus and available phosphorus were abundant in dryland,while total potassium and available potassium were generally lacking.The comprehensive soil fertility index ranged from 0.2 to 0.9,with an average value of 0.54.The soil fertility quality in the study area was moderately low,and the order of fertility quality under different land use types was ranked as dryland(0.57)>forest land(0.51)>paddy field(0.48).The higher fertility level in drylands indicated that the importance of human management measures and scientific soil fertilization treatment,while the higher fertility level in forested land than in unused agricultural land indicated the importance of proper returning farmland to forest. |
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| Keywords: | Soil nutrient Soil fertility Comprehensive evaluation Small watershed |
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