辽东山区日本落叶松人工林不同发育阶段林地表层土壤性质研究

打开文本图片集

中图分类号：S921.223 文献标识码：A 文章编号：1001-9499（2025）05-0016-03

Study on Surface Soil Properties of Japanese Larch Plantation at Different Developmental Stages in Eastern Mountainous Region of Liaoning Province

SUN Lijuan （Dagujia Forest Farm，Qingyuan Manchu Autonomous County，Liaoning Qingyuan 113300）

AbstractThe nutrient content and enzyme activity of the surface soil of Japanese larch plantations at diferent development stages in the eastern mountainous of Liaoning province were measured，and the changes of soil qualityat different developmental stages ofthe plantations were analyzed to provide support forthe long-term productivity maintenance of the plantations.The research results showed that the soil nutrient elements and enzyme activities exhibit the "V"shape change with increasing plantations age， decreasing to the lowest level in the middle aged and near-mature forest stage，the mature forest stage gradually recovered.This indicates that there was a certain degreeof soil degradation in Japanese larch plantations with the stand grows and develops.However，extending the rotation period and implementing reasonable thinning measures can help restore the soil fertility of Japanese larch plantations.

Key wordsJapanese larch plantations; different development stages; soil nutrient; enzymatic activity

森林土壤是森林生态系统的重要物质基础，森林土壤肥力水平高低决定着森林生产力的发挥，对于森林生态系统的稳定和健康发展起着至关重要的作用[1-3]。（剩余3982字）