干旱区生态环境知识资源中心(Arid): 黔西北石漠化桑园土壤水稳定同位素的时空变化特征

Arid

	黔西北石漠化桑园土壤水稳定同位素的时空变化特征
其他题名	Spatial and Temporal Variation Characteristics of Stable Isotopes in Soil Water of Stony Desertification Mulberry Field in Northwestern Guizhou
	邢丹 1; 肖玖军 2; 王晓红 3; 张芳 3; 韩世玉 3; 罗朝斌 3; 梁彦平 4
来源期刊	西南农业学报
ISSN	1001-4829
出版年	2017
卷号	30 期号:3 页码:639-644
中文摘要	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:deltaD=8.395~(18)O + 13.76,R~2 =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(deltaD和delta~(18)O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-6.41.2) >秋季(分别为-87.06.8 和-11.91.2)。在空间上样地间的土壤水deltaD和delta~(18)O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deltaD和delta~(18)O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。
英文摘要	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 ( deltaD =8. 39, delta~(18)O = 13.76 and R~2 =0.98). The hydrogen and oxygen stable isotope composition is of obvious seasonal variation characteristics. The average deltaD and delta~(18)O value in soil water of mulberry field is - 33.918.5 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 deltaD and delta~(18)O 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 deltaD and delta~(18)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.
中文关键词	石漠化桑园 ; 土壤水 ; 稳定同位素
英文关键词	Stony desertification mulberry field Soil water Stable isotope
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5952576
来源机构	贵州师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236837
作者单位	1.贵州大学林学院, 贵阳, 贵州 550025, 中国; 2.贵州省山地资源研究所, 贵阳, 贵州 550001, 中国; 3.贵州省蚕业研究所, 贵阳, 贵州 550006, 中国; 4.贵州师范大学生命科学学院, 贵阳, 贵州 550025, 中国
推荐引用方式 GB/T 7714	邢丹,肖玖军,王晓红,等. 黔西北石漠化桑园土壤水稳定同位素的时空变化特征[J]. 贵州师范大学,2017,30(3):639-644.
APA	邢丹.,肖玖军.,王晓红.,张芳.,韩世玉.,...&梁彦平.(2017).黔西北石漠化桑园土壤水稳定同位素的时空变化特征.西南农业学报,30(3),639-644.
MLA	邢丹,et al."黔西北石漠化桑园土壤水稳定同位素的时空变化特征".西南农业学报 30.3(2017):639-644.