黔西北石漠化桑园土壤水稳定同位素的时空变化特征
为揭示石漠化桑园土壤水分动力学机制及进一步研究桑树水分利用策略提供依据，采用稳定同位素技术研究黔西北石漠化桑园（贵州省毕节市七星关区清水铺镇大地村）0～50cm剖面土壤水氢氧稳定同位素的时空变化特征。结果表明：黔西北石漠化桑园土壤水中氢氧同位素具有良好的线性关系：8D=8．39δ18O＋13．76，R2=0．98。土壤水中氢氧稳定同位素组成具有明显的季节变化特征，表现为春季（8D和δ18O平均值分别为-33．9％。±18．5％。和-5．8‰±2．0‰）〉夏季（分别为-41．4％。±8．8‰和-6．4％。土1．2‰）〉秋季（分别为-87．0％o±6．8％。和-11．9％。±1．2％。）。在空间上...
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| Published in | 西南农业学报 Vol. 30; no. 3; pp. 639 - 644 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
贵州大学林学院,贵州贵阳550025
2017
贵州省蚕业研究所,贵州贵阳550006%贵州省山地资源研究所,贵州贵阳,550001%贵州省蚕业研究所,贵州贵阳,550006%贵州师范大学生命科学学院,贵州贵阳,550025 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4829 |
| DOI | 10.16213/j.cnki.scjas.2017.3.028 |
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| Abstract | 为揭示石漠化桑园土壤水分动力学机制及进一步研究桑树水分利用策略提供依据，采用稳定同位素技术研究黔西北石漠化桑园（贵州省毕节市七星关区清水铺镇大地村）0～50cm剖面土壤水氢氧稳定同位素的时空变化特征。结果表明：黔西北石漠化桑园土壤水中氢氧同位素具有良好的线性关系：8D=8．39δ18O＋13．76，R2=0．98。土壤水中氢氧稳定同位素组成具有明显的季节变化特征，表现为春季（8D和δ18O平均值分别为-33．9％。±18．5％。和-5．8‰±2．0‰）〉夏季（分别为-41．4％。±8．8‰和-6．4％。土1．2‰）〉秋季（分别为-87．0％o±6．8％。和-11．9％。±1．2％。）。在空间上样地间的土壤水8D和δ18O差异均不显著；土壤水氢氧同位素随土壤深度呈梯度分布，其中4月份土壤水8D和δ18O随剖面深度增加而递减，7月份递增，10月份呈降-升-降变化趋势。 |
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| AbstractList | 为揭示石漠化桑园土壤水分动力学机制及进一步研究桑树水分利用策略提供依据，采用稳定同位素技术研究黔西北石漠化桑园（贵州省毕节市七星关区清水铺镇大地村）0～50cm剖面土壤水氢氧稳定同位素的时空变化特征。结果表明：黔西北石漠化桑园土壤水中氢氧同位素具有良好的线性关系：8D=8．39δ18O＋13．76，R2=0．98。土壤水中氢氧稳定同位素组成具有明显的季节变化特征，表现为春季（8D和δ18O平均值分别为-33．9％。±18．5％。和-5．8‰±2．0‰）〉夏季（分别为-41．4％。±8．8‰和-6．4％。土1．2‰）〉秋季（分别为-87．0％o±6．8％。和-11．9％。±1．2％。）。在空间上样地间的土壤水8D和δ18O差异均不显著；土壤水氢氧同位素随土壤深度呈梯度分布，其中4月份土壤水8D和δ18O随剖面深度增加而递减，7月份递增，10月份呈降-升-降变化趋势。 S124%S152; 为揭示石漠化桑园土壤水分动力学机制及进一步研究桑树水分利用策略提供依据,采用稳定同位素技术研究黔西北石漠化桑园(贵州省毕节市七星关区清水铺镇大地村)0～50 cm剖面土壤水氢氧稳定同位素的时空变化特征.结果表明:黔西北石漠化桑园土壤水中氢氧同位素具有良好的线性关系:δD =8.39δ18O+ 13.76,R2=0.98.土壤水中氢氧稳定同位素组成具有明显的季节变化特征,表现为春季(δD和δ18O平均值分别为-33.9 ‰o±18.5‰和-5.8‰±2.0‰)＞夏季(分别为-41.4‰±8.8‰和-6.4‰±1.2‰)＞秋季(分别为-87.0‰±6.8‰和-11.9‰±1.2‰).在空间上样地间的土壤水δD和δ18O差异均不显著;土壤水氢氧同位素随土壤深度呈梯度分布,其中4月份土壤水δD和δ18O随剖面深度增加而递减,7月份递增,10月份呈降-升-降变化趋势. |
| Abstract_FL | The spatial and temporal variation characteristics of hydrogen and oxygen stable isotope in soil water of mulberry field at 0-50 cm soil depth in stony desertification area was analyzed to reveal the soil water dynamics mechanism of mulberry fields in stony desertification area and provide the basis for formulating water utilization strategy of mulberry field.Results:There is a good linear relation between hydrogen and oxygen isotope in soil water of mulberry field (δD =8.39,δ1s O =13.76 and R2 =0.98).The hydrogen and oxygen stable isotope composition is of obvious seasonal variation characteristics.The average δD and δ18O value in soil water of mulberry field is-33.9 ‰ ± 18.5 ‰ and-5.8 ‰±2.0 ‰ in Spring ＞-41.4 ‰±8.8 ‰ and-6.4 ‰±1.2 ‰ in Summer ＞-87.0 ‰±6.8 ‰ and-11.9 ‰±1.2 ‰ in Autumn.There is no obvious difference in δD and δ18O content in soil water among different sample plots.The hydrogen and oxygen stable isotope in soil water presents a gradient distribution with increase of soil depth.The δD and δ18 O value in soil water decreases with increase of soil depth in April,increases with increase of soil depth in July and presents a declining-rising-declining trend in October. |
| Author | 邢丹 肖玖军 王晓红 张芳 韩世玉 罗朝斌 梁彦平 |
| AuthorAffiliation | 贵州大学林学院,贵州贵阳550025 贵州省蚕业研究所,贵州贵阳550006 贵州省山地资源研究所,贵州贵阳550001 贵州师范大学生命科学学院,贵州贵阳550025 |
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| Author_FL | WANG Xiao-hong LUO Chao-bin ZHANG Fang HAN Shi-yu XIAO Jiu-jun XING Dan LIANG Yan-ping |
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| DOI | 10.16213/j.cnki.scjas.2017.3.028 |
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| DocumentTitleAlternate | Spatial and Temporal Variation Characteristics of Stable Isotopes in Soil Water of Stony Desertification Mulberry Field in Northwestern Guizhou |
| DocumentTitle_FL | Spatial and Temporal Variation Characteristics of Stable Isotopes in Soil Water of Stony Desertification Mulberry Field in Northwestern Guizhou |
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| Keywords | 石漠化桑园 Soil water Stony desertification mulberry field Stable isotope 稳定同位素 土壤水 |
| Language | Chinese |
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| Notes | 51-1213/S The spatial and temporal variation characteristics of hydrogen and oxygen stable isotope in soil water of mulberry field at 0 - 50 cm soil depth in stony desertification area was analyzed to reveal the soil water dynamics mechanism of mulberry fields in stony desertification ar- ea and provide the basis for formulating water utilization strategy of mulberry field. Results ： There is a good linear relation between hydrogen and oxygen isotope in soil water of mulberry field （ δD = 8.39, δ18O = 13.76 and R2 = 0.98 ）. The hydrogen and oxygen stable isotope com- position is of obvious seasonal variation characteristics. The average δD and δ18O value in soil water of mulberry field is -33.9‰ ＋ 18.5‰ and -5.8‰＋2.0‰ in Spring 〉 -41.4‰＋8.8‰and -6.4‰＋1.2‰ in Summer 〉 - 87. 0 ‰ ＋ 6. 8‰ and -11.9‰ 1.2 ‰ in Autumn. There is no obvious difference in δD and δ18O content in soil water among different sample plots. The hydrogen and oxy- gen stable isotope in soil water presents a gradient distribution with increase o |
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| PublicationTitle | 西南农业学报 |
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| PublicationYear | 2017 |
| Publisher | 贵州大学林学院,贵州贵阳550025 贵州省蚕业研究所,贵州贵阳550006%贵州省山地资源研究所,贵州贵阳,550001%贵州省蚕业研究所,贵州贵阳,550006%贵州师范大学生命科学学院,贵州贵阳,550025 |
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| Snippet | 为揭示石漠化桑园土壤水分动力学机制及进一步研究桑树水分利用策略提供依据，采用稳定同位素技术研究黔西北石漠化桑园（贵州省毕节市七星关区清水铺镇大地村）0～50cm剖面... S124%S152; 为揭示石漠化桑园土壤水分动力学机制及进一步研究桑树水分利用策略提供依据,采用稳定同位素技术研究黔西北石漠化桑园(贵州省毕节市七星关区清水铺镇大地... |
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| SubjectTerms | 土壤水 石漠化桑园 稳定同位素 |
| Title | 黔西北石漠化桑园土壤水稳定同位素的时空变化特征 |
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