武陵山区小流域马尾松天然林土壤水分动态研究
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摘要
利用TDR定位监测的方法,研究武陵山区马尾松天然林土壤水分分配规律。结果表明:在空间分布上,土壤各层含水量随土层深度的增加而改变。降雨后土壤水分损失率与干旱天数存在曲线函数关系(P<0.05)。不同土层间土壤水分变异系数随着干旱时间的推后显示递增趋势,但趋于平缓。
By using the time domain reflectometry(TDR),and based on the data collected from Feb,2015 to Oct,2015,the paper conducted a study on the dynamics of soil water under Pinus massoniana natural forest in Wuling Mountain Area.The results indicated that in terms of spatial distribution,its soil water content changed with increasing soil depth.The soil water loss rate after rain had a significant hyperbolic relationship with durative droughty days,which soil water storage had a significant linear negative relationship with this duration(P<0.05).With the extension of drought duration after rain,soil water loss tended to vary gently with increasing soil depth.Soil water was correlated significantly(P<0.05)with relative rainfall(R)、air temperature(t)、vapor pressure deficit(VPD) and relative humidity(RH).
By using the time domain reflectometry(TDR),and based on the data collected from Feb,2015 to Oct,2015,the paper conducted a study on the dynamics of soil water under Pinus massoniana natural forest in Wuling Mountain Area.The results indicated that in terms of spatial distribution,its soil water content changed with increasing soil depth.The soil water loss rate after rain had a significant hyperbolic relationship with durative droughty days,which soil water storage had a significant linear negative relationship with this duration(P<0.05).With the extension of drought duration after rain,soil water loss tended to vary gently with increasing soil depth.Soil water was correlated significantly(P<0.05)with relative rainfall(R)、air temperature(t)、vapor pressure deficit(VPD) and relative humidity(RH).
引文
[1]雷志栋,胡和平,杨诗秀.土壤水研究进展与评述[J].水科学进展,2003,10(3):311-318.
[2]黄昌勇.土壤学[M].北京:中国农业出版社,2000:98-118.
[3]D.希勒尔.土壤和水:物理原理和过程[M].华孟,叶和才,译.北京:农业出版社,1991:1-4.
[4]陈丽华,余新晓.晋西黄土地区水土保持林地土壤入渗性能的研究[J].北京林业大学学报,1995,17(1):42-47.
[5]郭忠升,吴钦孝.森林植被对土壤入渗速率的影响[J].陕西林业科技,1996(3):27-31.
[6]贺康宁.林地土壤水分运动的数学模型[J].北京林业大学学报,2002,14(1):77-86.
[7]贾恒义.黄土区森林土壤理化特性的初步研究[J].林业科学,1990,26(1):74-78.
[8]蒋定生,黄国俊.黄土高原土壤入渗速率的研究[J].土壤学报,2006,23(4):299-305.
[9]雷志栋,胡和平,杨诗秀.土壤水研究进展与述评[J].水科学进展,1999,10(3):311-318.
[10]李金中,裴铁璠,牛丽华,等.森林流域坡地壤中流模型与模拟研究[J].林业科学,2011,35(4):2-8.
[11]刘延玺.壤中流形成机理的数学描述[J].内蒙古农牧学院学报,1994,15(3):84-90.
[12]马履一.国内外土壤水分研究现状[J].世界林业研究,1997(5):26-31.
[2]黄昌勇.土壤学[M].北京:中国农业出版社,2000:98-118.
[3]D.希勒尔.土壤和水:物理原理和过程[M].华孟,叶和才,译.北京:农业出版社,1991:1-4.
[4]陈丽华,余新晓.晋西黄土地区水土保持林地土壤入渗性能的研究[J].北京林业大学学报,1995,17(1):42-47.
[5]郭忠升,吴钦孝.森林植被对土壤入渗速率的影响[J].陕西林业科技,1996(3):27-31.
[6]贺康宁.林地土壤水分运动的数学模型[J].北京林业大学学报,2002,14(1):77-86.
[7]贾恒义.黄土区森林土壤理化特性的初步研究[J].林业科学,1990,26(1):74-78.
[8]蒋定生,黄国俊.黄土高原土壤入渗速率的研究[J].土壤学报,2006,23(4):299-305.
[9]雷志栋,胡和平,杨诗秀.土壤水研究进展与述评[J].水科学进展,1999,10(3):311-318.
[10]李金中,裴铁璠,牛丽华,等.森林流域坡地壤中流模型与模拟研究[J].林业科学,2011,35(4):2-8.
[11]刘延玺.壤中流形成机理的数学描述[J].内蒙古农牧学院学报,1994,15(3):84-90.
[12]马履一.国内外土壤水分研究现状[J].世界林业研究,1997(5):26-31.