延安研究区主要自然植被类型土壤水分特征初探  

Study on Soil Moisture Characteristic of Vegetation in Ddifferent Succession Stage in Yan'an Experimental Area

作　　者：庞敏[1] 侯庆春[2] 薛智德[3] 韩蕊莲[2] 

机构地区：[1]西安理工大学,陕西西安710048 [2]中国科学院水土保持研究所,陕西杨陵712100 [3]西北农林科技大学资源与环境学院,陕西杨陵712100

出　　处：《水土保持学报》2005年第2期138-141,共4页Journal of Soil and Water Conservation

基　　金：中国科学院"西部行动计划"项目"黄土高原水土保持与生态环境建设试验示范研究"中的"黄土高原植被建设模式与快速绿化技术研究"(KZCX1 - 0 6 - 0 3)课题的研究内容

摘　　要：系统地研究延安研究区的天然植被土壤水分对于认识植被建设的环境具有重要意义,研究结果表明水分条件可以保证植被的正向演替和群落的稳定,虽然在天然植被中也存在土壤低含水层(土壤干层) ,但这是一种正常的自然现象,而且,对植被的自然更新、演替和形成稳定群落没有根本性的影响。The systematical study on soil moisture of natural vegetation in Yan'an experimental area have major significant to recognized environment of vegetation reconstruction, the study results showed as follows. Soil moisture condition of Loess Plateau could ensure the positive succession of vegetation although there is a layer of lower soil moisture in natural vegetation that is a normal natural phenomenon. Furthermore, the layer of lower soil moisture has not fundamentally effect on the natural renewal, succession and forming a stable community of vegetation. The ranges of soil moisture of main plant community types in Yan'an experimental area are listed in the paper.

关 键 词：土壤水分特征 研究区 植被类型 延安 植物群落类型 植被建设 植被土壤 水分条件 研究结果 土壤干层 天然植被 自然现象 自然更新 适宜范围 含水层 演替 

分 类 号：S152.7[农业科学—土壤学] TN919.81[农业科学—农业基础科学]