伊犁河流域新垦区杨树水保林水分生态效益研究  

Research on Ecological Benefit to Polar Forest for Soil and Water Conservation in the Vergin Exploit Region of Iii River Basin

作　　者：罗青红 宋锋惠 史彦江 朱首军[2] 

机构地区：[1]新疆林科院造林治沙研究所,乌鲁木齐830063 [2]西北农林科技大学资源环境学院,陕西杨陵712100

出　　处：《水土保持研究》2010年第6期39-43,共5页Research of Soil and Water Conservation

基　　金："十一五"国家科技支撑计划"伊犁河谷水土流失综合治理关键技术开发与示范"(2007BAC15B07-1)

摘　　要：对伊犁河流域新垦区两种造林密度杨树水保林林地土壤水分渗透速率、土壤含水量、土壤温度、土壤蒸发量、杨树蒸腾速率进行了测定,结果表明：（1）加水初期（0~4 h）内3种测地土壤水分渗透速率排序为2 m×4 m〉1.5 m×2 m〉对照地。（2）加水后土壤含水量以2 m×4 m林地变幅最大（2.09%）,其水分增加值分别为对照地和1.5 m×2 m林地的1.47倍和4.18倍。（3）2 m×4 m林地1天中最高地温（23.87℃）出现在16：00,而1.5 m×2 m林地地温在14：00-18：00较高。（4）全天各时段2 m×4 m林地的蒸发量均大于1.5 m×2 m林地,2 m×4 m林地土壤日蒸发总量为2.47 g/（dm2.d）,比1.5 m×2 m林地高0.91 g/（dm2.d）。（5）1.5 m×2 m林地杨树日蒸腾量为111.47 g/（dm2.h）,2 m×4 m林地仅有87.81 g/（dm2.h）。The seep rate of soil water,soil water content,soil temperture,soil evaporation,leaf transpiration were determined.The results showed that the order of the seep rate of soil water was 2 m×4 m1.5 m×2 mCK after water was added for 0~4 hours and the varying range of soil water content of 2 m×4 m forest was greatest（＋2.09%）,whose increased value were 1.47 and 4.18 times more than CK and 1.5 m×2 m forest.The highest temperature of soil in 2 m×4 m forest appeared at 16：00,and higher temperature of soil in 1.5 m×2 m forest appeared during 14：00-18：00.Soil evaporation of 2 m×4 m forest was larger than that of 1.5 m×2 m forest in all day.The total forest evaporation of 2 m×4 m forest [2.47 g/（dm2·d）]was higher than that of 1.5 m×2 m [0.91 g/（dm2·d）].The total leaf transpiration of 1.5 m×2 m forest [111.47 g/（dm2·d）] was higher than that of 2 m×4 m forest [87.81 g/（dm2·d）]in all day.

关 键 词：杨树水保林 渗透速率 土壤含水量 

分 类 号：S157[农业科学—土壤学] S727.22[农业科学—农业基础科学]