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生态学杂志 ›› 1995, Vol. ›› Issue (2): 13-17.

• 研究报告 • 上一篇    下一篇

南京栖霞山地区黑松、马尾松年轮Pb、Zn含量与降水量的谱分析

董雅文, 潘良宝, 钱君龙, 黄景苏   

  1. 中国科学院南京地理与湖泊研究所, 210008
  • 收稿日期:1993-10-04 修回日期:1994-10-26 出版日期:1995-04-10
  • 基金资助:
    国家自然科学基金

Spectral Analysis of Pb and Zn Contents in Tree Rings of Black Pine and Masson Pine and Pricipitation in Xixia Mountain Area of Nanjing

Dong Yawen, Pan Liangbao, Qian Junlong, Huang Jingsu   

  1. Nanjing Institute of Geography and Limnology, Academia Sinica, 210008
  • Received:1993-10-04 Revised:1994-10-26 Online:1995-04-10

关键词: 水稻, 播期, 弱光胁迫, 光合速率, 产量

Abstract: pectral analysis of Pb and Zn contents in annual growth rings of 2 back pine(Pins thunbergii Parl.)and 3 masson pine(Pinus massoniana Lamb)trees grown on a polyrnetal mine and its surrounding area of the Xixia Mountain in Nanjing shows that the length of periodicy plays a primary role in the periodic variations of Pb and Zn in tree rings. The synchronous variation of Pb with precipitation is dominated by long periodicy,while that of Zn by short periodicy.The ratio of orthogonal positive to orthogonal negative correlations of Pb and Zn variation,which is1/4 behind that of precipitation, varies with trees,Significant correlations between element and precipitation account for 0.30-0.60.For both of the element and precipitation sequences,their maximum and minimum delay time,and their corresponding periodicy vary with trees and elements.

Key words: rice, sowing date, low-light stress, photosynthetic rate, yield.