【作者】 范玉洁；

【导师】 刘静；

【作者基本信息】 内蒙古农业大学 ， 水土保持与荒漠化防治， 2004， 硕士

【摘要】 对河套灌区移植苗造林与萌蘖苗造林小美旱杨（Populus popular’s）农田防护林的防风效益、小气候效益进行了试验研究，对两种造林小美旱杨的树木生长量进行了比较分析，在此基础上综合考虑两种造林的小美旱杨农田防护林的防护效益、水资源消耗及其吸盐量，对两种造林的小美旱杨林带进行生态效益研究。主要结论为：移植苗造林与萌蘖苗造林的林带都能有效降低林网内的风速，且二者之间的防风效益无显著差异，在2H（平均树高）处风速减弱系数最大；两种造林的小美旱杨林带都对林网内的小气候有明显的改善作用，都能有效的减少林网内的土壤蒸发。移植苗造林林带的生态效益略优于同龄的萌蘖苗造林林带。更多还原

【Abstract】 The effects on wind and microclimate of Populus popular’s farm-shelter forests that were afforested by ways of planting and sprout seedling in Hetao-irrigated region were investigated. The growth of Populus popular’s that were afforested by ways of planting and sprout seedling was compared. On the basis of thought of protective benefits、water consumption and salt accumulation, ecological benefits of Populus popular’s farm-shelter forests that were afforested by ways of planting and sprout seedling were studied. The results are as follows: wind speed was decreased effectively in Populus popular’s farm-shelter forests. And the variance between the effects on wind of different afforestation ways was not obvious. Coefficient of decrease in wind was the largest in 2H. Microclimate was improved and soil evaporation was reduced effectively in Populus popular’s farm-shelter forests. Ecological benefits of farm-shelter forest that were afforested by way of planting were larger slightly than that of coetaneous farm-shelter forest that were afforested by way of sprout seedling.更多还原