›› 1986, Vol. 6 ›› Issue (4): 299-308.

• 论文 • 上一篇    下一篇

珠江三角洲基塘系统的水平衡及其生态功能

吴厚水   

  1. 广州地理研究所
  • 出版日期:1986-10-30 发布日期:1986-10-30

WATER BALANCE OF THE DYKEPOND SYSTEM OF THE ZHUJIANG DELTA AND ITS ECOLOGICAL FUNCTION

Wu Houshui   

  1. Guangzhou Institute of Geography
  • Online:1986-10-30 Published:1986-10-30

摘要: 珠江三角洲基塘地区大小鱼塘星罗棋布,塘基宽的不超过20米,窄的仅3、5米,基塘相间,形成独特的景观类型,通常被称为基水地。基水地内,鱼塘养鱼,基面栽种各种经济作物,基与塘之间相互作用,使水陆资源得到合理的利用,构成一种良性的农业生态系统——基塘系统。目前,基塘地区是我国著名的农业生产基地之一。基塘地区原来大部分是低洼积水地,农田生态条件很差,改造成基水地后,生态条件得到很大的改善,其中,水平衡条件的改善是最重要的前提条件之一。因此,对基塘系统水平衡的研究有着重要的意义。

Abstract: The water balance of the dyke-pond system of the Zhujiang Delta has its uniaue pattern. Its simplified pattern can be expressed as follows:
(rK+rL)-(EK+EL+f)=(C1+C2)+(W1+W2+W3)
where rk represents the precipitation on the dyke, rL, the precipitation on the fish pond, Ek, the evapo-transpiration of the dyke, EL, the surface evaporation of the fish pond, f, water from fish pond flowing to the area outside the dyke-pond system, C1, water absorbed by plants and becoming a constituent part of the plants, C2, water absorbed by the planktons and becoming a contituent part of the planktons, W1 water detaind by the plants, W2, variation of the water contain in soil, and W3, variation of water leve of the pond. The variation patterns and characteristics of the dyke-pond system and its two subsystems (the dyke subsystem and the fish pond subsystem) have been analyzed and the ecological function of water balance of the dyke-pond system has been discussed on the basis of the measured data. It is considered that the reason why dyke-pond system possesses a good agricultural ecological function has a direct bearing to its unique water balance module. Finally, some measures to further improve the agricultural ecological condition in the studied area have been put forward from the viewpoint of water balance.