【作者】 李保国； 孟申； 郭素萍； 齐国辉；

【Author】 LI Baoguo1,2,MENG Shen1,GUO Suping1,2,QI Guohui1,2(1.College of Forestry,Agricultural University of Hebei,Baoding 071000,China;2.Research Center for Walnut Engineering and Technology of Hebei,Xingtai 054000,China)

【机构】 河北农业大学林学院； 河北省核桃工程技术研究中心；

【摘要】 以经过改造的生态经济型水土保持林为试验地,以未经改造的干旱丘陵岗地为对照,研究了生态经济型水土保持林对干旱丘陵岗地小气候环境的影响。研究表明,通过换土,在丘陵岗地上建立的核桃树-苜蓿生态经济型水土保持林与原荒岗地相比,春季气温降低1.1～2.1℃,日较差减小1.1～1.2℃;空气湿度春季提高3.9%～10.2%,空气湿度的日较差减少3.9%～4.5%;接收的辐射总量减少1.093～3.513w/m2;土壤温度降低2.6～4.3℃,最大差值出现在地表以下10cm处,为4.3℃;土壤湿度提高12.8%～22.8%,最大差值出现在地表以下80cm处,为22.8%;风速降低0.5～1.1m/s;负氧离子含量在6:00、9:00、18:00分别为442个/cm3、402个/cm3、494个/cm3,均显著高于荒岗地的320个/cm3、272个/cm3、426个/cm3;蒸发量在4月27日为0.108g,极显著低于荒岗地的0.212g,4月30日、5月1日、5月2日分别为0.054mm、0.032mm、0.046mm,显著高于荒岗地的0.022mm、0.008mm、0.028mm。更多还原

【Abstract】 Eco-economic soil and water conservation forest which was modified was used as an experimental field,and the unmodified drought hilly area was used as the control,and the effect of soil and water conservation forest on the microclimate environment of drought hilly area was studied.The result showed that: the spring temperature in eco-economic soil and water conservation forests of walnut tree-alfalfa was 1.1～2.1 ℃ lower than that of CK,the air humidity in spring increased 3.9%～10.2%,and the diurnal range of air humidity had a reduction of 3.9%～4.5%.The received radiation reduced 1.093～3.513w/m2.Soil temperature reduced 2.6～4.3℃.the maximum difference was 4.3℃ below the surface for 10cm.Soil humidity improved 12.8%～22.8%,the maximum difference was 22.8% below the surface for 80cm.The wind speed was reduced 0.5～1.1m/s.Negative oxygenion content were 442/cm3,402/cm3,494/cm respectively in 6:00,9:00,and 18:00,significantly higher than the barren hillock of 320 /cm3,272 /cm3,and 426 /cm3.The Amount of evaporation was 0.108g in April 27th,which was significantly lower than that of barren hillock of 0.212g.The amounts of evaporation更多还原