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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (8): 6-12.doi: 10.11924/j.issn.1000-6850.2012-2346

• 畜牧 动物医学 蚕 蜂 • 上一篇    下一篇

荒漠草原不同经济水平牧户草场植被和土壤养分特征比较

尹燕亭 侯向阳 运向军 丁勇 李西良   

  • 收稿日期:2012-06-29 修回日期:2012-07-12 出版日期:2013-03-15 发布日期:2013-03-15
  • 基金资助:
    国家自然科学基金重点项目“我国北方草原区气候变化适应性评价及其管理对策研究”(70933004)；“气候变化对农牧民家庭的影响与适应对策：基于中国北方半农半牧区的调查研究”(71130185)；中央级公益性科研院所基本科研业务专项资金中国农业科学院草原研究所资助项目“欧亚温带草原东缘生态样带建立及资源环境变化和利用研究”(1610332012201)；公益性行业（农业）科研专项“牧区家庭牧场资源优化配置技术模式研究与示范”(201003019)；内蒙古自然科学基金重大项目“内蒙古主要草原类型区保护建设技术固碳潜力研究”(2010ZD08)。

Comparisons of Vegetation and Soil Nutrient Characteristics of Herders’Pastures at Different Economic Levels

  • Received:2012-06-29 Revised:2012-07-12 Online:2013-03-15 Published:2013-03-15

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摘要： 为揭示荒漠草原不同经济水平牧户草场生态状况，以内蒙古荒漠草原家庭牧场为尺度，研究不同经济水平牧户草场植被和土壤养分特征。结果表明：群落地上生物量呈现出冬草场>中经济水平牧户草场>高经济水平牧户草场>低经济水平牧户草场的趋势且高中低经济水平处理区的地上生物量之间无显著性差异(P>0.05)；土壤机械组成中，0~30 cm土层砂粒(1~0.05 mm)含量均呈现低经济水平牧户草场>高经济水平牧户草场>冬草场>中经济水平牧户草场，土壤粘粒(<0.001 mm)含量0~10 cm和10~ 20 cm土层均呈现中经济水平牧户草场>冬草场>高经济水平牧户草场>低经济水平牧户草场；0~30 cm土层土壤全氮平均含量呈现冬草场>中经济水平牧户草场>高经济水平牧户草场>低经济水平牧户草场，不同经济处理区之间无差异(P>0.05)，速效氮含量低经济水平牧户草场最高；土壤全磷含量冬草场最高，高经济水平牧户草场最低，速效磷含量低经济水平牧户草场最低；土壤全钾含量呈现出冬草场>高经济水平牧户草场>低经济水平牧户草场>中经济水平牧户草场，但不同处理间无显著性差异(P>0.05)，土壤速效钾含量冬草场最高。

关键词: 氮肥利用率, 氮肥利用率

Abstract: In order to identify the ecological conditions of herders’pastures at different economic levels, based on the households in desert steppe of Inner Mongolia, the vegetation and soil nutrient characteristics of herders’pasture at different economic levels were analyzed. The results showed that aboveground biomass was highest in the winter pasture, and there were no significant differences among different treatments (P>0.05); as for soil mechanical composition, the soil sand (1-0.05 mm) content in 0-30 cm soil layer was highest at pastures of herders at low economic level, and soil clay (<0.001 mm) content in 0-10 cm and 10-20 cm soil layers were highest at pastures of herders at middle economic level; as for the total nitrogen and available nitrogen in 0-30 cm soil layer, it showed that winter pasture and pastures of herders at low economic level had the most contents, respectively, and there were no significant differences among different treatments for total nitrogen in 0-30 cm soil layer (P>0.05); total phosphorus content was highest at winter pasture and lowest at pastures of herders at high economic level, and available phosphorus content was lowest at pastures of herders at low economic level; soils of winter pastures had highest total and available potassium contents, and there were no significant differences among different treatments for total potassium content (P>0.05).