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应用生态学报 ›› 1998, Vol. 9 ›› Issue (5): 475-480.

• 研究论文 • 上一篇    下一篇

作物群体边际效应规律及其应用

杜心田, 王同朝   

  1. 河南农业大学, 郑州450002
  • 收稿日期:1996-10-12 修回日期:1998-03-31 出版日期:1998-09-25 发布日期:1998-09-25
  • 基金资助:

    国家自然科学基金资助项目(39170514)

Edge effect law in crop population and its application

Du Xintian, Wang Tongchao   

  1. Henan Agricultural University, Zhengzhou 450002
  • Received:1996-10-12 Revised:1998-03-31 Online:1998-09-25 Published:1998-09-25

摘要: 对作物边际效应的研究表明,有利生态因子的作用大于不利生态因子的作用时,作物群体发生正边际效应,表现为边际优势;不利生态因子的作用大于有利生态因子的作用时,作物群体发生负边际效应,表现为边际劣势。在作物群体内部条件一致的情况下,边际效应的绝对值随边距递增而递减。

关键词: 边际效应, 作物群体, 边距, 景观格局与过程, 海绵城市, 径流总量控制率

Abstract: Studies on crop edge effect show that when the role of favorable ecological factors on crop population is greater than that of unfavorable ecological factors, the positive edge effect appears and the edge superiority shows; reversely, the negative edge effect appears and the edge inferiority shows.Under the same interior conditions in crop population, the absolute value of edge effect is decreased with increasing edge distance.

Key words: Edge effect, Crop population, Edge distance, landscape pattern and process, control rate of total runoff, sponge city