【作者】 郭秋菊；

【导师】 德永军；

【作者基本信息】 内蒙古农业大学 ， 森林培育， 2008， 硕士

【摘要】 本文以巴林右旗科尔沁沙地1a、3a、5a生杨柴(Hedysarum laeve )沙障为研究对象,对营建沙障迎风坡不同坡位主要气象因子的日变化采用平行对比观测法,定时定点观测;并对沙障网格内的植被恢复情况进行了调查和分析。结果表明:1.杨柴沙障对沙地小气候的影响主要表现为降低风速,提高气温和减小温度日较差,增加空气相对湿度。2.杨柴沙障对小气候的影响随着沙障生长年限增加而变化:第1～3(4)年随着杨柴的不断生长,杨柴沙障对小气候的调节作用逐渐加强;第5年随杨柴沙障生长衰退,对小气候的调节作用减弱。3.秋季扦插的杨柴沙障即可降低风速,翌春成活后对小气候的调控作用逐渐加强,为植被恢复创造了有利的环境条件。4.对植被恢复的影响表现为植物种类明显增多,生活型、科属结构多样化,植被盖度提高,且治理时间越长,植被恢复程度越高。5.不同坡位的杨柴沙障对小气候、植被恢复的影响不同,位于迎风坡中部的沙障对沙地小气候的改善作用最明显,沙障网格内植物种类较多,植被覆盖度较大,更利于植被恢复。更多还原

【Abstract】 This article took the one-year-old, three-year-old and five-year-old Hedysarum leave sand barriers as the study object, adopting the parallel observation at the timing and fixed point observed the main meteorological factors of the different slope positions in the windward slope where were established sand barriers in Balinyouqi Horqin sandy ground, also surveying and analyzing the status of vegetation restoration in the sand barrier grids. The results showed that: 1.The influences of the Hedysarum leave barriers to the micro-climate were reduced the wind velocity; elevated the air temperature and the air relative humidity also could reduce diurnal temperature range. 2. The influences of the Hedysarum leave sand barriers to the micro-climate varied with the increasing growth yeas, the Hedysarum leave sand barriers gradually strengthened the regulation effects on the micro-climate with the growing of the Hedysarum leave sand barriers in the one to three (four)-old-year; and the effects would be weakened in the five year with the growth declination of the Hedysarum leave sand barriers.3. The cutting Hedysarum leave sand barriers could reduce the wind velocity in the autumn, and they would be alive in the next spring which were gradually strengthened the regulation effects on the micro-climate, so that created the favorable environment condition. 4. The influences of the Hedysarum leave sand barriers to the vegetation restoration were the plants species obviously had increased, the life form and family genus structure of plants had a tendency of diversification, also the extent of vegetation restoration were higher with the control time.5.The Hedysarum leave sand barriers in the different slope position had different effects on the micro-climate and vegetation restoration, so the Hedysarum leave sand barriers in the middle slope position had the most obvious improving effects, also in the Hedysarum leave sand barriers grids had the more plants species, the plant coverage was higher, which were beneficial to the vegetation restoration.更多还原