节点文献
森林生态系统微量元素循环及其影响因素
Micronutrient cycling and its affecting factors in forest ecosystems
【摘要】 森林生态系统微量元素循环受制于森林中地下部分土壤环境条件和地上部分凋落物周转、穿透雨性质以及林火等重要生态过程.文中重点对森林生态系统地上部分微量元素循环及其影响因素进行了综合评述.文献资料显示,在大多数森林生态系统中,凋落物和穿透雨是保证林木微量元素营养供应和平衡的重要来源,而火烧、环境污染和施肥等也会对一些森林生态系统微量元素循环产生重要影响.凋落物分解的调控机理、全球变化及环境污染对微量元素循环过程的影响、退化生态系统恢复和重建过程中微量元素平衡等应是今后森林生态系统微量元素循环研究的重点.
【Abstract】 Micronutrient cycling in forest ecosystems is affected by soil conditions,litterfall turnover,throughfall properties,and some important ecological processes such as forest fire. This paper reviewed the related researches,with the focus on the micronutrient cycling in aboveground part of forest ecosystems and relevant affecting factors. In most forest ecosystems,litterfall and throughfall were the important sources ensuring the balanced supply of micronutrients for growth forest,while forest fire,environmental pollution,and fertilization could also play important roles in the micronutrient cycling in some forest ecosystems. Future studies on the micronutrient cycling in forest ecosystems should focus on the mechanisms governing micronutrient release from litterfall,the effects of global change and environmental pollution on the micronutrient cycling processes,and the balanced supply of micronutrients in restoration and reconstruction of degraded ecosystems.
【Key words】 forest ecosystem; micronutrient; nutrient cycling; ecological process; litterfall; throughfall.;
- 【文献出处】 应用生态学报 ,Chinese Journal of Applied Ecology , 编辑部邮箱 ,2009年01期
- 【分类号】Q948
- 【被引频次】42
- 【下载频次】787