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林业科学 ›› 2001, Vol. 37 ›› Issue (zk): 94-98.doi: 10.11707/j.1001-7488.2001S117

• 论文及研究报告 • 上一篇    下一篇

杉木人工林林下植物对土壤肥力的影响

林开敏 俞新妥 洪伟 黄宝龙   

  1. 福建农林大学杉木研究中心,南平353001;南京林业大学资源与环境学院,南京210037
  • 收稿日期:2001-01-08 修回日期:1900-01-01 出版日期:2001-11-25 发布日期:2001-11-25

EFFECTS OF UNDERGROWTH PLANT ON SOIL FERTILITY IN CHINESE FIR PLANTATION

Lin Kaimin,Yu Xintuo,Hong Wei,Huang Baolong   

  1. Chinese Fir Research Centre of Fujian Agriculture and Forestry university Nanping 353001;Resource and Environment College of Nanjing Forestry University Nanjing 210037
  • Received:2001-01-08 Revised:1900-01-01 Online:2001-11-25 Published:2001-11-25

摘要:

在29a不同密度杉木林分内,对不同林下植物覆盖度和生物量梯度与土壤肥力的关系进行研究,研究结果表明:杉木林下植物的平均高、总覆盖度和生物量均随杉木林分密度的增加呈现明显的递减趋势;林下植物对土壤水分和孔隙状况有一定程度的改善作用,但0~20cm和20~40cm土层的有机质、全N、全P、水解N和速效P的含量基本上呈现出随林下植物覆盖度的增加而增加的趋势,并且以0~20cm尤为明显,这说明林下植物具有促进营养元素在地表富集的作用。因此,保护和恢复林下植物对杉木林地力的维护具有重要的意义。

关键词: 杉木, 林下植物, 生长状况, 土壤肥力

Abstract:

The relations between gradients of undergrowth plant coverage and biomass and soil fertility have been studied in 29 year-old different density Chinese fir plantation.The results showed that the mean height, total coverage and biomass of undergrowth plant in 29 year-old Chinese fir plantation obviously decrease with the increase of forest stand density;soil moisture and pore properties are certainly improved by undergrowth plant,but the content of organic matter, total nitrogen, total phosphorous, available nitrogen and available phosphorous basically increase with the increase of coverage of undergrowth plant in 0~20 cm and 20~40 cm, and more obvious in 0~20 cm,It shows that undergrowth plant can promote to richen nutritional elements in topsoil. Therefore protection and restoration of undergrowth plant have important significance to conservation of soil fertility in Chinese fir plantation.

Key words: Chinese fir, Undergrowth plant, Growth status, Soil fertility