自然资源学报

自然资源学报 ›› 2001, Vol. 16 ›› Issue (3): 216-220.doi: 10.11849/zrzyxb.2001.03.004

• 论文 • 上一篇    下一篇

极端干旱气候下盐化草甸植被净初级生产力对全球变化的响应

张宏   

  1. 北京师范大学环境演变与自然灾害教育部重点实验室, 中国沙漠研究中心, 北京 100875
  • 收稿日期:2000-06-12 修回日期:2000-09-25 出版日期:2001-06-25 发布日期:2001-06-25
  • 作者简介:张宏(1961-),男,四川自贡人,理学博士,副教授,主要研究方向为干旱生态学。
  • 基金资助:

    国家自然科学基金项目资助(49871045)

Responses of NPP of salinized meadow in hyper-arid area to global change

ZHANG Hong   

  1. Key Laboratory of Environment Change and Natural Disaster, Ministry of Education; China Center of Desert Research, Beijing Normal University, Beijing 100875, China
  • Received:2000-06-12 Revised:2000-09-25 Online:2001-06-25 Published:2001-06-25

PDF (PC)

赞

被引次数

21 | 10

摘要： 利用作者建立的塔里木盆地北部盐化草甸植被净初级生产力模型 ,模拟了极端干旱气候下盐化草甸植被净初级生产力对全球变化的响应。结果表明 ,在一定土壤质地条件下 ,盐化草甸植被净初级生产力随地下水埋深的增加而逐渐下降。地下水埋深越大 ,盐化草甸植被净初级生产力对地下水埋深变化的响应越敏感。全球变化造成的温度升高对盐化草甸植被净初级生产力的影响 ,也是依地下水埋深的不同而有所差异。地下水埋深较小时,盐化草甸植被净初级生产力对温度升高的反应较小 ;随着地下水埋深的加大,其响应程度明显增加。因而 ,地下水埋深越大 ,盐化草甸植被净初级生产力对全球变化的响应就越明显。

关键词: 全球变化, 盐化草甸, 净初级生产力, 塔里木盆地

Abstract: Responses of NPP of salinized meadow in hyper arid area to global change were predicted using the NPP model,developed by the author to simulate the NPP of natural salinized meadow in northern part of Tarim Basin.The result shows that the NPP of salinized meadow in hyper arid area is the function of underground water table(UWT) and the temperature in given soil conditions.The NPP of salinized meadow decreased with increase of underground water table.Responses of NPP to change of UWT and temperature increase resulting from global change vary with different UWT of salinized meadow in hyper arid area.The impacts of global change to NPP of salinized meadow,therefore,depend on differing UWT of salinized meadow.It is extrapolated that responses of NPP of salinized meadow to global change are more sensitive with greater UWT than those with shallower UWT.

Key words: global change, salinized meadow, NPP, Tarim Basin

中图分类号: 

  • Q147