地理科学

地理科学 ›› 2001, Vol. 21 ›› Issue (4): 297-300.doi: 10.13249/j.cnki.sgs.2001.04.297

• 论文 • 上一篇    下一篇

东北农牧交错区水分条件及其对植被分布的影响

张军涛1,2, 李哲1, 郑度1   

  1. 1. 中国科学院地理科学与资源研究所, 北京 100101;
    2. 东北财经大学公共管理系, 辽宁 大连 116025
  • 收稿日期:2000-07-05 修回日期:2000-11-02 出版日期:2001-07-20 发布日期:2001-07-20
  • 基金资助:
    国家自然科学基金重点资助项目(49731020)。

The Moisture Regime of Transitional Areas of Farming and Pasturing in the Northeastern China and Its Effects on Vegetation Distribution

ZHANG Jun-tao1,2, LI Zhe1, ZHENG Du1   

  1. 1. Institute of Geographical Sciences and Natural Resources, Chinese Academy of Sciences, Beijing 100101;
    2. Department of Public Administration, Northeast Finance and Economics University Dalian, Liaoning 116025
  • Received:2000-07-05 Revised:2000-11-02 Online:2001-07-20 Published:2001-07-20

PDF (PC)

赞

被引次数

100 | 20

摘要： 水分条件是决定植物生长、分布的主要因子之一,也是生态学和地理学研究所关注的一个基本问题。本文依据最新的数据资料对东北农牧交错区水分条件的基本特征进行了分析,以三维图形表达了湿度指数的空间分布格局;对典型站点的年干燥度以及在年内的变化进行了分析;通过Kira指数、湿度指数和NDVI植被指数说明了农牧交错区植物生长、分布与水分条件的关系。

Abstract: Moisture regime, which served as a major factor, determines the plant distribution in transitional areas of farming and pasturing of the northeastern China.It is essential to analyze the relationship between the moisture regime and the plant distribution, in order to adjust measures to local conditions and prevent the desertification.The characteristics of moisture regime in the research areas had been analyzed by using the latest data.The spatial pattern of HI was expressed in three dimensions as well.The result of this research shows that the annual aridity increases from the east to west of the research area, although it is affected by contour microclimates.The aridity in summer and fall is less than that in winter and spring.Using the Kira index, HI, and NDVI vegetation index, the relation was shown more clearly.The seasonal change of NDVI values of different vegetation indicates that the correlation between monthly average of NDVI and precipitation is higher than that between monthly average NDVI and temperature.It is, therefore, obvious that the moisture regime is the principle factor for the land cover change in the research areas.

中图分类号: 

  • P468.0+24