阴山北麓不同土地利用类型土壤养分特征分析与评价

doi:10.11686/cyxb2015311

草业学报 ›› 2016, Vol. 25 ›› Issue (4): 230-238.DOI: 10.11686/cyxb2015311

阴山北麓不同土地利用类型土壤养分特征分析与评价

高君亮^{1, 2}, 罗凤敏¹, 高永^{3*, *}, 原伟杰⁴, 王淮亮⁵, 党晓宏³

1.中国林业科学研究院沙漠林业实验中心,内蒙古磴口 015200;
2.中国林业科学研究院荒漠化研究所,北京 100091;
3.内蒙古农业大学生态环境学院,内蒙古呼和浩特 010019;
4.中国林业科学研究院华北林业实验中心,北京 102300;
5.河北省水利技术试验推广中心,河北石家庄050061

收稿日期:2015-06-18 出版日期:2016-04-20 发布日期:2016-04-20
作者简介:高君亮(1985-),男,甘肃静宁人,在读博士。E-mail:gaojunliang1985@163.com
基金资助:
内蒙古教育厅重点项目(NJZZ13066)和“十二五”科技支撑课题(2012BAD16B0103)资助

Analysis of soil nutrient characteristics under different land use patterns in the northern piedmont of Yinshan Mountain

GAO Jun-Liang^{1, 2}, LUO Feng-Min¹, GAO Yong^{3, *}, YUAN Wei-Jie⁴, WANG Huai-Liang⁵, DANG Xiao-Hong³

1.Experimental Center of Desert Forestry, Chinese Academy of Forestry, Dengkou 015200, China;
2.Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China;
3.College of Ecology and Environment, Inner Mongolia Agricultural University, Hohhot 010019, China;
4.Forestry Experiment Center of North China, Chinese Academy of Forestry, Beijing 102300, China;
5.Hebei Extension and Experiment Center for Water Technology, Shijiazhuang 050061, China

Received:2015-06-18 Online:2016-04-20 Published:2016-04-20

摘要/Abstract

摘要： 采用野外实地调查采样、室内样品分析和数理统计相结合的方法,研究了阴山北麓4种不同利用类型土地的土壤养分特征,并对土壤肥力进行了综合评价。结果表明,1) 研究区土壤有机质、全氮、全磷、全钾含量分别为(25.12±6.56),(0.63±0.08),(0.76±0.10),(31.99±1.07) g/kg;速效氮、速效磷、速效钾含量分别为(39.87±9.14),(6.72±3.75),(175.83±105.45) mg/kg;pH为(7.74±0.14)。2) 土地利用方式对有机质、全氮、全磷、速效磷和速效钾的影响极显著(P<0.01),而对速效氮、全钾和pH的影响不显著(P>0.05)。3) 土壤全氮、磷、钾含量和pH值在垂直剖面上(0~25 cm自上而下)表现为无规律的波动状态,但整体上变幅不大;而速效氮、磷、钾和有机质含量整体上表现为下降趋势。4) 土壤肥力综合评价值的排序为封育草地(0.506)>放牧草地(0.417)>耕地(0.361)>弃耕地(0.357),封育草地与放牧草地的土壤肥力为中等级水平,而耕地和弃耕地的肥力为低等级水平,说明草地比耕地更有利于土壤保肥。总体而言,研究区土壤肥力水平较低,存在的主要问题是土壤中全氮和速效氮含量严重偏低。

Abstract: The aim of this study was to illustrate differences in the nutrient characteristics of soil under different land use patterns in the northern piedmont of Yinshan Mountain. Soil nutrient characteristics were evaluated under four different land use patterns (enclosed grassland, grazed grassland, farmland, and abandoned land) in field studies, by analyses of field samples, in laboratory analyses, and by mathematical models. The contents of organic matter, total nitrogen (N), total phosphorus (P), and total potassium (K) in soil samples were (25.12±6.56), (0.63±0.08), (0.76±0.10), and (31.99±1.07) g/kg, respectively. The contents of soil available N, available P, and available K were (39.87±9.14), (6.72±3.75), and (175.83±105.45) mg/kg, respectively. The soil pH value was (7.74±0.14). The type of land use pattern significantly affected soil organic matter, total N, total P, available P, and available K (P<0.01), but did not significantly affect the available N, total K, or pH (P>0.05). The total soil nutrient contents and the pH value in the 0-25 cm soil layer showed little variation, but the contents of available soil nutrients and organic matter decreased at deeper soil depths. Based on a comprehensive evaluation of soil fertility, the four plots were ranked from most to least fertile as follows: enclosed grassland (0.506)>grazed grassland (0.417)>farmland (0.361)>abandoned land (0.357). The soil fertility of enclosed grassland and grazed grassland was evaluated as medium, while that of farmland and abandoned land was classified as low. These results suggested that grassland is more beneficial than farmland for maintaining soil fertility. In conclusion, the soil fertility was low in these studied areas, and the contents of total N and available N were especially low.

高君亮, 罗凤敏, 高永, 原伟杰, 王淮亮, 党晓宏. 阴山北麓不同土地利用类型土壤养分特征分析与评价[J]. 草业学报, 2016, 25(4): 230-238.

GAO Jun-Liang, LUO Feng-Min, GAO Yong, YUAN Wei-Jie, WANG Huai-Liang, DANG Xiao-Hong. Analysis of soil nutrient characteristics under different land use patterns in the northern piedmont of Yinshan Mountain[J]. Acta Prataculturae Sinica, 2016, 25(4): 230-238.

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阴山北麓不同土地利用类型土壤养分特征分析与评价

Analysis of soil nutrient characteristics under different land use patterns in the northern piedmont of Yinshan Mountain

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