Time-space Distributive Feature of Soil Nutrient and Chemical Characteristics of Robinia Pseudoacia L.Plantation Forestland in Loess Plateau
Time-space Distributive Feature of Soil Nutrient and Chemical Characteristics of Robinia Pseudoacia L.Plantation Forestland in Loess Plateau
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发表时间：
2008
影响因子：
3.9
通讯作者：
Zhang Lei
中科院分区：
文献类型：
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作者：
Zhang Lei
研究了黄土高原刺槐人工林土壤养分及化学特征的时空效应。结果表明：土壤有机质、pH、全氮、速效氮、速效磷、速效钾、交换性钙、交换性碱容量随树龄变化不规律，全磷、交换性镁波动较大；土壤有机质、全氮、速效氮随土层深度、速效磷呈幂函数递减。随土壤深度的变化,全磷、速效钾、交换性钙、交换性镁、交换性碱容量呈不规则变化,但pH值波动较大;与荒地相比,土壤有机质、全氮、速效氮、全磷、速效磷、交换性钙、交换性镁、交换性碱容量分别升高21.56%~96.8%,34.3%~160.1%,191.5%~238.4%,2.1%~24.1%,19.82%~92.71%,64.21%~80.02%,25%~46.5%,67.2%~89.5%。这表明种植刺槐可以改善这一状况。有效补充土壤养分。
Time-space effect of soil nutrient and chemical characteristics of Robinia pseudoacia L.plantation forestland in Loess Plateau has been studied.The results shows that: soil organic matter,pH,total N,available N,available P and available K,exchangeable Ca and exchangeable base capacity changes irregularly with tree age,total P and exchangeable Mg changes fluctuantly;Soil organic matter,total N,available N decreases by power function with soil depth,available P tends to decreases,total P,available K,exchangeable Ca,exchangeable Mg and exchangeable base capacity varies irregularly with soil depth,but pH-value changes fluctuantly;Compared with wasteland,soil organic matter,total N,available N,total P,available P,exchangeable Ca,exchangeable Mg and exchangeable base capacity raises respectively by 21.56%~96.8%,34.3%~160.1%,191.5%~238.4%,2.1%~24.1%,19.82%~92.71%,64.21%~80.02%,25%~46.5%,67.2%~89.5%.These showed that Robinia pseudoacia L.plantation can improve the condition of soil nutrient effectively.