荒岗地改造为核桃-苜蓿林后土壤水文效应的研究  

Study on the Soil Hydrological Effect of the Walnut-alfalfa Forest Transformed from the Barren Hillock

作　　者：袁晓龙[1] 王秀茹[1] 李保国[2] 齐国辉[2] 赵乐[2] 

机构地区：[1]北京林业大学水土保持学院,北京100083 [2]河北农业大学林学院,河北保定071000

出　　处：《水土保持学报》2014年第4期60-65,共6页Journal of Soil and Water Conservation

基　　金：林业公益性行业专项(201004024)

摘　　要：在研究区以荒岗地为对照,对荒岗地改造为核桃-苜蓿林后的土壤进行初步研究。结果表明：（1）各核桃-苜蓿林地的土壤含水率变化范围为11.5%∽20.5%,3a生、5a生和8a生核桃-苜蓿林地0-60cm的土壤平均含水率分别为荒岗地的137.17%,162.28%和167.09%。（2）各核桃-苜蓿林地的土壤容重变化范围为1.29∽1.48g/cm3,3a生、5a生和8a生核桃-苜蓿林地0-60cm的土壤平均容重分别为荒岗地的99.31%,95.83%和93.75%。（3）各核桃-苜蓿林地的土壤总孔隙度变化范围为43.7%∽52.6%,3a生、5a生和8a生核桃-苜蓿林地0-60cm的土壤平均总孔隙度分别为荒岗地的100.54%,110.89%和113.73%。（4）各核桃-苜蓿林地土壤饱和持水量变化范围为87.4∽105.2mm,土壤有效持水量变化范围为15.2∽25.8mm。（5）各核桃-苜蓿林地稳渗速率在0.09∽0.62mm/min之间变动,3a生、5a生和8a生核桃-苜蓿林地分别为荒岗地的32.14%,196.43%和221.43%,土壤入渗速率与入渗时间的幂函数关系相关系数均在0.97以上。A preliminary study on the soil of the walnut-alfalfa forest transformed from the barren hillock was conducted with the barren hillock as control. The results showed that： （1）The range of the soil water content of walnut-alfalfa woodlands was 11.5%--20.5%, and the average of it in 0--60 cm of 3 a, 5 a and 8 a walnut-alfalfa woodland was 137.17%, 162.28% and 167.09% of the barren hillock respectively. （2）The range of soil bulk density of walnut-alfalfa woodlands was 1.29--1.48 g/cma , and the average of it in 0--60 cm of 3 a, 5 a and 8 a walnut-alfalfa woodland was 99.31%, 95.83% and 93.75% of the barren hillock respectively. （3）The range of total soil porosity of walnut-alfalfa woodlands was 43.7%--52.6%, and the av- erage of it in 0--60 cm of 3 a, 5 a and 8 a walnut-alfalfa woodland was 100.54%, 110.89% and 113.73% of the barren hillock respectively. （4）The range of soil saturated water of walnut-alfalfa woodlands was 87.4--105.2 mm, and the range of soil available water was 15.2--25.8 mm. （5）The range of soil steady infiltration rate of walnut-alfalfa woodlands was 0.09--0.62 mm/min, and it of 3 a, 5 a and 8 a walnut-alfalfa woodland was 32.14%, 196.43% and 221. 43% of the barren hillock respectively. And all the power function＇s corre- lation coefficient between the soil infiltration rate and infiltration time was more than 0.97.

关 键 词：荒岗地 核桃-苜蓿林 土壤水文效应 

分 类 号：S714.2[农业科学—林学] S715.7