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应用生态学报 ›› 1996, Vol. 7 ›› Issue (s1): 23-28.

• 研究论文 • 上一篇    下一篇

植被砍伐对土壤养分的影响

陈荣均, Richard T.Corlett, Ronald D. Hill   

  1. 香港大学, 香港
  • 收稿日期:1996-02-29 修回日期:1996-04-28 出版日期:1996-12-25 发布日期:1996-12-25
  • 基金资助:

    中外合作研究项目

Effect of vegetation harvesting on soil nutrients

Chen Rongjun, Richard T.Corlett, Ronald D. Hill   

  1. University of Hong Kong, Hong Kong
  • Received:1996-02-29 Revised:1996-04-28 Online:1996-12-25 Published:1996-12-25

摘要: 研究了不同砍伐频率下,香港、深圳和鹤山研究样地山坡地N、P、K含量的差异.不同采样地之间,养分全量和有效量差异显着.在尚未砍伐的山坡地,土壤养分含量显着高于经常砍伐的山坡地.未伐土壤的N含量顺序为香港样地>深圳样地>鹤山样地.下层土壤P的含量高于上层土壤.深圳样地常代土壤养分含量高于鹤山.结果建议采用最适砍伐频率和在最适季节砍伐,以便减少砍伐产生的不利影响.

关键词: 植被砍伐, 土壤养分, 砍伐频率, 生态水文, 水文变化指标, 水情变化, 三峡水库, 荆南三口

Abstract: The difference in N, P and K contents of hillside fields under different harvesting frequencies is investigated at Hong Kong, Heshan and Shenzhen study sites. There are significantdifferences in total and available nutrient contents among sampling locations. Soil nutrient contents on uncutting hills are significantly higher than those on often-cutting ones, and in the former case, soil N content is in the order of Hong Kong >Shenzhen >Heshan.Lower soil layers have a higher P content than upper often-cutting hill has a highernutrient content at Shenzhen than at Heshan. It is suggested that vegetation harvestingshould be done under optimal frequency and within optimal season to minimize its detrimental effect.

Key words: Vegetation harvesting, Soil nutrient, Harvesting frequency, three outfalls of Chingjiang River., indicators of hydrological alteration (IHA), eco-hydrology, the Three Gorges Reservoir, change of water regime