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生态学杂志 ›› 2003, Vol. ›› Issue (3): 87-90.

• 研究简报 • 上一篇    下一篇

天津开发区滨海生态防护圈组成群落的生物量、物质和能量结构

徐永荣1,2, 张万均3, 冯宗炜1, 黄明勇3   

  1. 1. 中国科学院生态环境研究中心, 北京 100085;
    2. 华中农业大学园艺林学学院, 武汉 430070;
    3. 天津开发区园林绿化公司, 天津 300457
  • 收稿日期:2002-04-28 修回日期:2002-11-02 出版日期:2003-03-10
  • 通讯作者: 冯宗炜
  • 基金资助:
    天津开发区园林绿化公司资助项目

Biomass, energy and nutrient distribution in communities of the strand ecological protective circle, TADA, China

XU Yongrong1,2, ZHANG Wanjun3, FENG Zongwei1, HUANG Mingyong3   

  1. 1. Research Center for Eco environmental Science, Chinese Academy of Siences, Beijing 100085, China;
    2. Huazhong Agricultural University, Wuhan 430070, China;
    3. Afforestation Company in TADA, Tianjin 300457, China
  • Received:2002-04-28 Revised:2002-11-02 Online:2003-03-10

摘要: 构成天津开发区滨海生态防护圈的种群落的生物量和能量现存量分别为,乔-灌草群落28.55 t·hm-2、525.91×109 J·hm-2,灌木群落28.11t·hm-2、503.27×109 J·hm-2,草本群落2.30t·hm-2、355.68 ×109 J·hm-2,灌-草群落.21 t·hm-2、75.52×109 J·hm-2,都大大超过了原生植被碱蓬群落(0.275 t·hm-2、3.61×109 J·hm-2).具有复层结构的乔-灌-草群落和灌-草群落在生物量和能量现存量的分配上,都是优势层占据绝对优势地位,而且在各群落中生物量和能量分配比例很接近:乔-灌-草群落中乔木层占8.3%和8.3%、灌木层占1.89%和1.8%、草本层仅占0.77%和0.73%;灌-草群落中灌木层占80.08%和80.51%、草本层占19.95%和19.9%.种群落对N、P、K、Na、Ca、Mg、Cl-7种元素的现存总量从大到小依次为草本群落(2 81.87 kg·hm-2)、灌木群落(518.16 kg·hm-2)、乔-灌-草群落(99.9kg·hm-2)、灌-草群落(99.22 kg·hm-2),大于原生碱莲群落(28.3kg·hm-2).草本群落对Na和Cl-有着极大的吸收和积累,分别达到521.68 kg·hm-2和129.15 kg·hm-2.元素现存量在复层结构的乔-灌-草群落和灌-草群落中的空间分布与生物量和能量一样,仍然是优势层占据优势地位.

关键词: 杂草群落, 耕作方法, 除草剂, 玉米田, 多样性

Abstract: The standing biomass and energy of four communities in the strand ecological protective circle in Tianjin Economic and Technological Development Area(TADA), China, were 28.55 t穐m-2 and 525.91?109 J穐m-2 in tree shrub herb community, 28.11 t穐m-2 and 503.27?109 J穐m-2 in shrub community, 24.30 t穐m-2 and 355.68?109 J穐m-2 in herb community. They were higher than those in primary community. The distribution of biomass and energy in the tree shrub herb community were tree >shrub >herb, and shrub> herb in shrub herb community. The rank order of total standing crop of N, P, K, Na, Ca, Mg and Cl were herb community 2481.87 kg穐m-2 >shrub community 518.16 kg穐m-2 >tree shrub herb community 499 49 kg穐m-2 >shrub herb community 99.22kg穐m-2 >the primary community 28.34 kg穐m-2 .The pattern of elemental distributions were same as biomass and energy: tree > shrub > herb in tree shrub herb community, shrub>herb in shrub herb community. But the percent of herb in the shrub herb community increased.

Key words: Weed community, Tillage method, Herbicide, Cornfield, Diversity

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