欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报

• 研究报告 • 上一篇    下一篇

樟子松针叶磷组分浓度与土壤有效磷浓度的关系

刘兴宇1,2;赵琼1;曾德慧1;刘金环1;胡亚林1,2;邓东周1,2;王红1,2   

  1. 1中国科学院沈阳应用生态研究所, 沈阳 110016;2中国科学院研究生院,北京 100039
  • 收稿日期:2007-07-26 修回日期:1900-01-01 出版日期:2008-03-21 发布日期:2008-03-21

Relationships between phosphorus fractions concentrations in Pinus sylvestris var. mongolica needles and soil available phosphorus.

LIU Xing-yu1,2;ZHAO Qiong1; ZENG De-hui1; LIU Jin-huan1; HU Ya-lin1,2; DENG Dong-zhou1,2; WANG Hong1,2   

  • Received:2007-07-26 Revised:1900-01-01 Online:2008-03-21 Published:2008-03-21

摘要: 为弄清科尔沁沙地东南部樟子松人工林是否受土壤磷素供应的限制,找出反映土壤磷素供应状况的最佳叶片养分指标,分析了樟子松人工林不同年龄针叶中全磷、无机磷、有机磷和全氮浓度以及土壤有效磷浓度.结果表明:研究区樟子松人工林土壤有效磷浓度较低,为0.12~0.63 mg·kg-1;土壤有效磷浓度与当年生针叶无机磷和全磷浓度显著相关,而与针叶全磷的相关性来源于针叶中无机磷与全磷的相关.与当年生针叶全磷浓度相比,针叶无机磷浓度能更为准确、直接地反映土壤的供磷水平.

关键词: 大型底栖无脊椎动物, 影响因子, 潮下带, 福建省, 海湾, 空间分布

Abstract: To make clear whether Mongolian pine (Pinus sylvestris var.mongolica) plantation is limited by soil phosphorus (P) supply in southeast Horqin sand land and to find out the best leaf indicator of soil P supply, the concentrations of total P, inorganic P and organic P in the needles of different age ofP. sylvestris var. mongolica and the soil available P were analyzed. The results showed that in the study area, soil available P was rather low (0.12-0.63 mg·kg-1), and had significant correlations with the inorganic P (cPi) and total P (cPt) concentrations in the current-year needles of P. sylvestris var. mongolica. The significant correlation between soil available P and needle cPt derived from the significant correlation between cPi and cPt. Compared with cPt, cPi could reflect the level of soil P supply more accurately and directly.

Key words: spatial distribution, marine bay, macroinvertebrate, Fujian Province, subtidal zone, environmental factor