文献类型：期刊文献

中文题名：论三北地区冻结滞水的生态环境效益

英文题名：THE EFFECTS OF FROZEN STAGNANT WATER ON ECOLOGICAL ENVIRONMENT IN NORTHWEST NORTH AND NORTHEAST CHINA

作者：那平山[1] 周梅[1] 王志刚[2] 包翔[3] 徐树林[3]

第一作者：那平山

机构：[1]内蒙古农业大学林学院;[2]中国林科院沙漠林业实验中心;[3]内蒙古农业大学生态环境学院

年份：2000

卷号：21

期号：1

起止页码：43-47

中文期刊名：内蒙古农业大学学报：自然科学版

基金：国家自然科学基金!(49662 0 0 9)

语种：中文

中文关键词：三北地区;冻结滞水;生态环境;形成机制;水资源

外文关键词：northwest;north and northeast China;frozen stagnant water;ecology;environmental effects

分类号：S181

摘要：本文依据野外观测和室内模拟实验初步资料分析 ,冻结滞水是冬季冻结作用在包气带内形成的季节性固态地下水 ,具有独特的形成机制和倒置富水性及独立的水盐动态特征 ,对生态环境具有双重效应。冻结滞水比冻结前水量一般增加 8%～ 2 5 % ,最高增加 39.5 1% ,是天然和人工植物越冬、春季繁衍的水分代谢均衡不可缺少的 ,甚至是唯一水资源 ,是保持生态平衡的主导因子。当水量达到过饱和状态时 ,易形成冻胀、热融、滑塌、沉陷、盐渍化、沼泽化等不良地质现象 ,造成生态环境恶化 ;在水量 <5 %时造成天然和人工植被衰亡 ,加速荒漠化。这一课题属于跨学部多学科交叉应用基础研究 ,将为可持续发展农林牧业工程、环境水文地质、工程地质、荒漠化防治等提供科学的理论依据和技术方法 ,开拓国际前沿研究领域。
The frozen stagnant water was studied on the basis of field observation and simulation in laboratory.Frozen stagnant water is seasonal solid underground water,formed by freezing effects in winter in the frozen soil layer of independent water and salt dynamics.It has dual effects on environment.The frozen stagnant water generally increases the amount of water by 8-25%.The maximum water content is 39.51%. It is indispensable or even the unique water source for natural forest and manual vegetation live through the winter,vegetation growth in spring,water metabolism,and also is a centra factor of ecological balance.When water content arrive at immoderate sturated state,some geological phenomena as frozen lumps on the ground,landslides,dents,and salinzation of swamplization is formed,thus accelerate the deterioration and imbalance of ecology.When water content is less than,it bring abut contabescence for natural forest and manual vegetation,and acceleration of desertification.This study may provide theoretical basis and feasible technological measures for sustaimable development in agriculture,forest,livestock industry,environmental hydrological geology,negineering geology,prevention and control of desertification.