土壤水分不停的运动和转化不存在零通量面(一)  

NO ZERO FLUX PLANE IN SOIL WATER MOVING AND CHANGING (FIRST)

作　　者：王积强[1] 李国振[1] 陈韶君[2] 

机构地区：[1]中国科学院新疆地理研究所 [2]水利水电科学院水资源所

出　　处：《干旱区地理》1992年第3期92-99,共8页Arid Land Geography

摘　　要：1983年英国学者库柏来中国讲授零通量面方法,并开始了中国学者的有关实验研究。笔者认为,现在还未彻底搞清楚土壤水分运行机制的前提下,确认零通量面理论,只能是人为的简化的数学推导。而且在实验中忽略了闭塞空气的胀缩作用;忽略了水平流对垂直流的影响;用负压计测定的土壤水分势,无法判定土壤水分(重力水、毛管水、汽态水、植物根系中的导管水和筛管水等)的运行方向。因而零通量面理论并没有得到实验证明。A negative attitude is adopted about the theory of zero flux plane of soil water movement. It is considered that the complex nature of soil water movement is simplified on the mathematical deducing of the theory of zero flux plane. The main shortcomings are as following: the expansion and contraction of closed air, and the influence of level current on the vertical current are neglected; the movement direction of soil water (including the gravitational water, capillary water, vapour, vessel and sieve water of plant roots, etc.)can not be determined by the soil water tendency measured with the tensiometer. Therefore, the theory of zero flux plane has not been proved yet experimentally.

关 键 词：零通量面 土壤 水分 运动 

分 类 号：S152.7[农业科学—土壤学]