三江源冻土型地下水库对典型高寒植物群落补水机理  

Research on water compensation mechanism for typical alpine plant communities under frozen-soil underground reservoirs in three-river source area:a review

作　　者：郭凤清[1] 曾辉[2] 丛沛桐[3] 

机构地区：[1]山西农业大学城乡建设学院,山西太谷030801 [2]北京大学深圳研究生院,广东深圳518055 [3]华南农业大学水利与土术工程学院,广东广州510642

出　　处：《山西农业大学学报（自然科学版）》2016年第4期268-275,共8页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：国家973重大科技计划项目(2013CB956303);中国博士后科学基金项目(2013M540815);山西农业大学人才引进项目(2014YJ07)

摘　　要：本文以三江源冻土型地下水库与植物群落依存关系为基础对冻土型地下水库对植物群落补水机理研究进行阐述:(1)三江源区典型植被对于维护区域的生态特征具有独特的生态价值,特殊的自然条件和环境决定了植被的分布特点。(2)三江源区冻土活动层具备规模地下水形成条件,提出冻土型地下水库模式。(3)三江源区冻土层与植被具有十分相关的耦合关系。(4)冻土活动层分布规律、冻土层中土壤含水率特点、冻土区径流水文过程为解释三江源区冻土型地下水库对典型高寒植被群落的补水机理提供基础的理论依据。(5)无损、准确、高效、便携的地质雷达是冻土勘察中较好的探测技术。针对三江源区冻土活动层对植被的补水机理研究现状,指出今后从地下水库视角分析冻土层的重点研究问题,包括冻土型地下水库补给植物群落的机理、冻土型地下水库的成库条件、冻土型地下水库排泄特征对三江源高寒植物群落稳定补水机制、冻土型地下水库对高寒植被的生态效应、地质雷达在冻土监测方面的应用等。基于这些研究问题,最后以三江源区典型高寒植物群落生长所需要的稳定补给水源为研究对象,提出冻土型地下水库稳定的补水机理与机制研究的思路,可为三江源区改善生态环境起到指导作用。Three-River source area,as a national nature protection area,the changes of permafrost have caused some problems in alpine ecosystem and these problems have been paid great attention to in recent years.This paper reviewed the research of water compensation mechanism for typical alpine plant communities under frozen-soil underground reservoirs based on the interdependence between permafrost underground reservoir and plant community in Three-River source area：（1）The typical vegetation in Three-River source area has an important ecological value for regional ecological environment and special environment determines the distribution characteristics of vegetation.（2）The pattern of frozen-soil underground reservoir is put forward on the basis of the basic building conditions of underground reservoirs in permafrost active layer of Three-River source area.（3）There is relevant coupling relationship between permafrost and vegetation in Three-River source area.（4）The researches on the distribution of permafrost active layer,the characteristics of soil moisture content in permafrost,the runoff hydrological processes in frozen area provide the theoretical basis to explain the general research.And（5）geological radar with the advantages of no damage,accuracy,high efficiency and portable carrying,is a better detection technology in frozen soil survey.The focused research questions on the permafrost are pointed out from the perspective of underground reservoir,including water compensation mechanism of frozen-soil underground reservoirs to plant communities,building conditions of frozen-soil undergroundreservoirs,stable hydrating mechanism of discharge characteristics of frozen-soil underground reservoirs to alpine plant communities,ecological effect of underground reservoirs on alpine vegetation,and application of geological radar in frozen soil monitoring.Finally,the general research ideas are proposed from the perspective of stable water compensation mechanism of permafrost underground reservoirs in hope o

关 键 词：三江源 冻土型地下水库 高寒植物群落 

分 类 号：P942[天文地球—自然地理学]