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生态学杂志 ›› 1984, Vol. ›› Issue (1): 43-44,46.

• 专论与综述 • 上一篇    下一篇

农业区划与生态系统——以甘肃为例

鲜肖威   

  1. 兰州大学地理系
  • 收稿日期:1981-08-24 出版日期:1984-02-10

AGRICULTURAL DIVISION AND ECOSYSTEM

Xian Xiaowei   

  1. Department of Geography, Lanzhou University
  • Received:1981-08-24 Online:1984-02-10

关键词: 树木生长势, 松墨天牛, 种群密度, 松材线虫病, 发病程度, 相关系数

Abstract: Taking Gansu province as an example, this paper discusses the relationship between agricultural division and ecosystem and stresses the guiding role of the ideas on ecosystem and ecological equilibrium in the work of agricultural division.

Key words: Pine growth potential, Monochamus alternatus, Population density, Pathogenicity, Bursaphlenchus xyloophilus, Correlation coefficient