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应用生态学报 ›› 1999, Vol. 10 ›› Issue (2): 143-146.

• 研究论文 • 上一篇    下一篇

兰考泡桐生物量积累规律的定量研究

杨修1, 吴刚1, 黄冬梅2, 杨长群3   

  1. 1. 中国科学院生态环境研究中心系统生态室, 北京 100080;
    2. 海南大学计算中心, 海口 570228;
    3. 河南省西峡县林业技术推广站 474500
  • 收稿日期:1998-06-12 修回日期:1999-01-20 出版日期:1999-03-25 发布日期:1999-03-25
  • 通讯作者: 杨修,男,36岁,博士后.研究方向为农林复合经营、乡村可持续发展及退化生态系统的恢复与重建.发表学术论文多篇,并获得多项科研成果奖励.E-mail:yangxiu@mail.r cees.ac.cn E-mail:yangxiu@mail.r cees.ac.cn
  • 基金资助:

    中国科学院封丘农业生态开放实验站开放基金资助项目(A950701).

Quantitative study on biomass accumulation of Paulownia elongata

Yang Xiu1, Wu Gang1, Huang Dongmei2, Yang Changqun3   

  1. Department of Systems Ecology, Research Center for Eco-Environmental Sciences, Academia Sinica, Beijing 100080
  • Received:1998-06-12 Revised:1999-01-20 Online:1999-03-25 Published:1999-03-25

摘要: 对农桐复合经营兰考泡桐的干物质生产、积累和归还规律的系统研究表明,兰考泡桐生物量随树龄增大而增加,生物量在各器官的分配比例依次为:树干>树枝>树根>树叶>花;兰考泡桐年干物质生产主要集中在5~7月,占全年干物质生产总量的77.3%;兰考泡桐凋落物绝大部分为落叶,占凋落物总量的87.1%,凋落伴随年生长季节的全过程,且每年出现两次高峰;兰考泡桐干物质积累主要发生在5~7月,占全年干物质积累总量的72.7%;兰考泡桐全生育期的干物质归还率为33.73%.

关键词: 农桐复合经营, 兰考泡桐, 生物量, 相对生长规律, 鄂尔多斯高原, 灌丛化, 弃耕农田, 土壤物理性质

Abstract: The study on dry matter production, accumulation and return of Paulownia elongata in crop Paulownia intercropping system shows that the biomass of P.elongata increased with tree age, and its distribution in each organ followed the sequence: stem>branch>root>foliage>flower. The yearly dry matter production mainly occured from May to July, accounting for 77.3% of the whole yearly production. Defoliation accounted for 87.1% of the total litterfall. Litter fell throughout the whole yearly growth period, and showed two peaks annually. The yearly dry matter accumulation mainly occurred from May to July, accounting for 72.7% of the whole yearly accumulation, and the dry matter return ratio during its whole life period reached 33.73%.

Key words: Crop Paulownia intercropping, Paulownia elongata, Biomass, Law of allometric growth, soil physical property, Ordos Plateau, shrub encroachment, abandoned cropland