人工梭梭林的生态功能评价  

Ecological Function Assessment of Artificial Haloxylon Ammodendron Forest

作　　者：贾志清[1] 吉小敏[2] 宁虎森[2] 梁远强 

机构地区：[1]中国林业科学研究院林业研究所国家林业局林木培育重点实验室,北京100091 [2]新疆林业科学院,新疆乌鲁木齐830000

出　　处：《水土保持通报》2008年第4期66-69,共4页Bulletin of Soil and Water Conservation

基　　金：国家“十一五”“林业科技支撑计划专题”防沙治沙植物材料筛选与扩繁技术(2006BAD26B0101);国家“十一五”林业科技支撑计划课题“新疆活化沙丘的固定与绿洲防风固沙体系构建技术研究与试验示范”(2006BAD26B09);国家林业局“948”创新项目“引进沙旱生植物良种应用技术创新与示范”(2005-4-C05)

摘　　要：依据在新疆西北部对人工梭梭林定位观测结果，研究了梭梭林的生态价值和经济功能。结果表明，人工梭梭灌草林带对近地层气流的阻力可增加1、2～6．6倍，灌草带越宽，降低近地层风速的作用愈显著。130m宽梭梭灌草带阻截流沙量达到95％左右。观测表明，要将流沙有效地阻截在绿洲外围，梭梭灌草带的宽度应不少于130m为宜。灌草带内的温度状况与带的宽度和植物盖度密切相关，保持梭梭灌草带一定的盖度和宽度，对改善梭梭灌草带内空气湿度状况具有重要意义。According to the located observation for the artificial Haloxylon ammodendron forest in Northwest Xinjiang Wei Autonomous Region, we analyzed its ecological value and economic functions. Results indicate that the air current resistance of forest belt to close stratum may increase 1. 246.6 times. Moreover, the wider the belt, the more notable the effect. The 130 m wide forest belt can block and intercept about 95% of drift-sand. The observation shows that the better width of forest belt is more than 130 m in order to make drift-sand to be blocked and intercepted effectively in the oasis periphery. The inner temperature of forest belt has the closer correlations with its width and plant coverage degree, so there is an important significance to improve its inner air humidity by keeping forest belt with a certain coverage degree and width.

关 键 词：梭梭林 灌草带 气流阻力 空气温湿度 生态功能 

分 类 号：S718.5[农业科学—林学]