| 黄雅茹,马迎宾,郝玉光,辛智鸣,徐军,董雪,刘禹廷,赵英铭.乌兰布和东北部典型土地利用的土壤养分特征[J].干旱地区农业研究,2019,37(1):123~129 |
| 乌兰布和东北部典型土地利用的土壤养分特征 |
| Analysis of soil nutrient characteristics under typical land uses in north\|eastern Ulan Buh Desert |
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| DOI：10.7606/j.issn.1000-7601.2019.01.17 |
| 中文关键词: 土壤养分 土地利用方式 乌兰布和沙漠 |
| 英文关键词:nutrients characteristics land use types soil fertility the Ulanbuh Desert |
| 基金项目:中央级公益性科研院所基本科研业务费专项资金项目（CAFYBB2017MB026） |
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| 中文摘要: |
| 采用野外实地调查采样、室内样品分析相结合的方法，研究了乌兰布和沙漠东北部3种不同利用类型土地（耕地、林地、荒漠灌丛）的土壤养分特征，并对土壤肥力进行了综合评价。结果表明：研究区有机质含量、全氮、全钾、全磷分别为8.02±4.35、0.34±0.14、0.37±0.09、16.10±2.04 g·kg-1，碱解氮、速效磷、速效钾分别为18.48±8.27、3.76±0.89、135.04±83.35 mg·kg-1，pH值为8.8±0.20; 土地利用方式对有机质、全磷、碱解氮、速效磷、速效钾、pH值影响显著（P＜0.05），对全氮、全钾影响不显著（P＞0.05）; 三种土地利用方式下土壤有机质、土壤全氮、碱解氮、全磷、速效磷、全钾、速效钾随着土层深度的增加呈下降趋势; 土壤肥力综合评价的排序为荒漠灌丛(0.443)＞林地(0.409)＞耕地(0.312), 荒漠灌丛与林地的土壤肥力为中等级水平，而耕地的肥力为低等级水平。荒漠灌丛与林地比耕地有利于土壤保肥。 |
| 英文摘要: |
| The objective of this study was to illustrate differences in soil nutrient characteristics under different land uses in north\|eastern Ulanbuh Desert. Soil nutrient characteristics were evaluated under three different types of land uses. The results indicated that the total contents of organic matter, nitrogen, potassium, and phosphorus in soil samples were 8.02±4.35, 0.34±0.14, 0.37±0.09 g·kg-1, and 16.10±2.04 g·kg-1, respectively while the contents of available N, P, and K were 18.48±8.27, 3.76±0.89 mg·kg-1, and 135.04±83.35 mg·kg-1, respectively. The soil pH was 8.8±0.20. Also, it is found that the land use type significantly affected soil organic matter, total P, available N, available P, available K, and pH value but it did not significantly affect the total N and K (P<0.05). The contents of organic matter, total N, total K, total P, available N, available K, available P and pH decreased with increasing soil depth. Based on a comprehensive evaluation of soil fertility, the three plots were ranked from most to least fertile as desert shrub (0.443)＞forest land (0.409)＞farmland (0.312). The desert shrub and forest land were evaluated as medium fertility while the farmland was classified as low in fertility. These results suggested that desert shrub and forest land were more beneficial than farmland for maintaining soil fertility. |
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