ZHANG Wei-hua,LI Wen-zhong,ZHANG Hao,et al.Studies on Influence of Soil Fertility by Different Figuration Model of Mixed Forest in Datong County of Qinghai[J].Research of Soil and Water Conservation,2005,12(05):259-262.
青海大通退耕还林不同混交配置模式对土壤肥力影响的研究
- Title:
- Studies on Influence of Soil Fertility by Different Figuration Model of Mixed Forest in Datong County of Qinghai
- Keywords:
- mixed forest; figuration model; soil fertility
- 分类号:
- S152
- 摘要:
- 对比分析研究了青海大通黄河上游混交林不同配置模式对土壤肥力效应的影响，进而确定当地混交林优化配置方式。结果表明：不同混交配置方式的人工林均能一定程度提高土壤肥力水平，改善林木生存环境，且不同混交配置方式间存在显著差异。23年生4种混交林土壤理化性质发生定向演化，土层形态分异趋向天然林剖面。通过对土壤理化性状及其土壤环境和地上生物量10个指标统计分析，混交林优化模式为：青杨×沙棘>华北落叶松×沙棘>青海云杉×沙棘>白桦×沙棘。
- Abstract:
- The fertility effects were studied on different figuration model of mixed forest in Datong county of upper stream of the Yellow River.The figuration style was optimized.The results were as follows.The artificial forest with different figuration style could evidently increase soil fertility,decrease soil pH value and improve living conditions of trees.The physical and chemical properties of soil converts to the feature of natural forest in four types of 23 years of mixed forest.Through the analysis on 10 indicators about soil physical and chemical properties and soil environment and up ground biomass etc.,the sequence of optimal models is Populus cathayana×Hippophae rhamnoides > Larix principi-rupprechii×H.rhamnoides > Picea crassifolia×H.rhamnoides > Betula platyphylla×H.rhamncides.
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备注/Memo
收稿日期:2005-1-24
基金项目:“十五”国家科技攻关项目“退耕还林还草工程区水土保持型植被建设技术研究与示范”（2001BA510B01）
作者简介:张伟华（1961- ），男，博士生，副教授，主要研究方向：土壤侵蚀、荒漠化防治、土壤改良