期刊文献+

黄土高原油松刺槐人工林对土壤肥力影响的研究 被引量:15

THE IMPROVMENT OF THE PINUS TABULAEFORMIS AND ROBINIA PSEUDOACACIA PLANTATION TO THE SOIL FERTILITY ON THE LOESS PLATEAU
下载PDF
导出
摘要 研究了黄土高原油松、刺槐人工林对土壤的培肥效应。结果表明:油松、刺槐人工林能显著提高土壤肥力水平,降低土壤pH。18龄油松1.2m2及33龄刺槐1.6m2根区土壤断面的有机质、全氮、有效氮、有效钾、CEC均值较无林对照分别提高57.8%、68.6%、109.3%、28.9%、54.4%及74.3%、123.6%、285.3%、42.4%、63.7%,pH降低14.4%及2.9%。油松、刺槐林对土壤的培肥效应符合深度模型y=A+Blnh。 The improvement of the Pinus tabulaeformis and Robinia pseudoacacia plantation to soil fertility on the loess plateau was investigated.The results indicated that:(1)The soil fertility can be enhanced greatly by the plantation.The average values of soil organic matter,total nitrogen,available nitrogen,available potassium,CEC were enhanced by 57.8%,68.6%,109.3%,28.9%,54.4%in the soil profil(1.2m2) of the 18-yearsold Pinus tabulaefrmis,and 74.3%,123.6%,285.3%,42.4%,63.7% in the soil profil(1.6m2) of the 33-years-old Robinia pseudoacacia plantations.while,the soil PH decreased by 14.4% and 2.9% in the Pinus tabulaeformis and Robinia pseudoacacia plantations respectively.(2)The changing tendency of the improvement of the plantations with soil depth can be described by the moddle of y=A+Bln h.
机构地区 西北农业大学
出处 《陕西林业科技》 北大核心 1995年第2期21-25,5,共6页 Shaanxi Forest Science and Technology
基金 "八五"国家科技攻关专题
关键词 黄土高原 造林 人工林 土壤肥力 油松 刺槐 Loess plateau Afforestation plantation soil fertility
  • 相关文献

同被引文献245

引证文献15

二级引证文献276

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部