植物生态学报 ›› 2002, Vol. 26 ›› Issue (4): 465-472.

• 论文 • 上一篇    下一篇

鹤山马占相思生态系统重建过程中对立地水热因子的调节作用

闫俊华,周国逸,林永标   

  • 发布日期:2002-04-10
  • 通讯作者: 闫俊华

The Regulation on Water and Heat Factors During the Restoration Process of an Acacia mangium Plantation

YAN Jun-Hua, ZHOU Guo-Yi and LIN Yong-Biao   

  • Published:2002-04-10
  • Contact: YAN Jun-Hua

摘要:

分析南亚热带鹤山人工马占相思(Acacia mangium)生态系统水热的连续观测资料,采用时空互代的方法,并与邻近的退化草坡、裸地相比较,得到如下一些主要结果:1) 本区域年内降水分配不均,而热量输入却相对均匀,存在湿季水土流失和干季水分亏匮的可能性。2) 7龄后的马占相思林分反射率明显小于裸地与草坡,为该系统提高生产力和生物量累积提供了前提条件。3) 马占相思生态系统对立地气温、地温的调节集中表现在缩小其变化振幅,使得林地的气温、地温变化有其自身的规律,倾向于有益于生态系统发育方面的变化。4) 干季时

Abstract:

Previously, Heshan County, Guangdong province was covered with degraded grassland, bare land and other degraded plantation ecosystems due to the removal of natural vegetation. In recent years, vegetation rehabilitation has succeeded in this region by inte