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	干旱绿洲区3种典型农田防护林的水分来源
其他题名	Water Sources for Three Typical Farmland Shelterbelts in Arid Oasis
	王金强; 李俊峰; 王昭阳; 杨广; 何新林
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2019
卷号	39 期号:1 页码:72-77
中文摘要	[目的]研究对农田有重要防护作用的农田防护林在农田节水灌溉模式下的水分利用机制,为本地区农田和农田防护林的优化灌溉提供参考。[方法]利用稳定氧同位素(delta~(18) O)研究干旱绿洲区常见农田防护林胡杨(Populus euphratica)、沙枣(Elaeagnus angustifolia)和榆树(Ulmus pumila)在农田节水灌溉模式下的水分利用机制,根据直接判断法、IsoSource模型和吸水深度模型3种方法对结果进行了对比分析。[结果]不同时间,不同树种防护林水分利用来源不同。其中4月胡杨主要使用1020cm的浅层土壤水,贡献率为83.3%;沙枣主要使用80120cm和120160cm的深层土壤水,其贡献率分别为50.6%和16.9%;榆树主要使用50300cm的深层土壤水和地下水,累计贡献率为82.5%;5月胡杨主要利用浅层030cm的土壤水,贡献率为57.1%;沙枣和榆树转而利用表层010cm的土壤水,其贡献率分别为50.8%和52.7%;6月胡杨利用020cm浅层土壤水和地下水,贡献率分别为38.7%和10.5%;沙枣有76.9%的水分来源于1020cm的浅层土壤;榆树主要水分来源中有49.1%来自于080cm,另有12.3%来自于地下水。同时研究得出胡杨46月的平均吸水深度分别为18,28,25cm,沙枣的平均吸水深度分别为118,37,34cm;榆树的平均吸水深度分别为95,37,29cm。[结论]选择农田防护林树种时,在保证防护林防护效益的同时,应选择搭配以深层土壤水或地下水为主要水分来源的种类,从而更加高效地发挥农田防护林的防护作用。
英文摘要	[Objective]This paper studied the water use mechanism of farmland shelterbelts with important protection function under the mode of farmland water-saving irrigation,in order to provide a scientific basis for optimizing irrigation of the local farmland and farmland shelterbelt.[Methods]The stable oxygen isotope (delta~(18) O)was used to study the water use mechanism of Populus euphratica,Elaeagnus angustifolia and Ulmus pumilain the arid oasis areas under farmland water-saving irrigation mode.The results were compared and analyzed based on the direct judgment method,IsoSource model and water absorption depth model. [Results]The sources of water use was different for different tree species at vary time.In April,P.euphratica mainly used 1020 cm of shallow soil water,and its contribution rate was 83.3%.E.angustifolia mainly used deep soil water at 80120 cm and 120160 cm depth with contribution rates of 50.6%and 16.9%,respectively. Whereas,82.5% water usage of U.pumila was from 50300 cm depth of soil water and groundwater.In May,57.1%of water used by P.euphratica was from 030 cm shallow soil water.Surface soil water at 010 cm soil depth contributed 50.8%and 52.7%for the water usage of E.angustifoliaand U.pumila,respectively.In June,the contribution of water source for P.euphratica usage was 38.7%from 020 cm shallow soil, while 10.5%from groundwater.And 76.9%of the water content of E.angustifoliacame from shallow soil of 1020 cm,49.1% of water usage for U.pumila came from 080 cm soil,and another 12.3%from groundwater.The average water absorption depth of P.euphratica was 18,28,25 cm,respectively in April,May and June.For E.angustifolia,it was 118,37,34 cm,respectively.At the same time,it was 95,37,29 cm for U.pumila,respectively.[Conclusion]When selecting farmland shelterbelt tree species, while ensuring the protection benefit of shelterbelt,we should choose the species with deep soil water or groundwater as the main water source,so as to exert the protective effect of farmland shelterbelt more efficiently.
中文关键词	农田防护林 ; 稳定氧同位素 ; IsoSource模型 ; 吸水深度 ; 水分来源
英文关键词	farmland shelterbelt stable oxygen isotope IsoSource model water absorption depth water sources
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6441829
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239517
作者单位	石河子大学水利建筑工程学院;;现代节水灌溉兵团重点试验室, ;;现代节水灌溉兵团重点试验室, 石河子;;石河子, 新疆;;新疆 832000;;832000, 中国
推荐引用方式 GB/T 7714	王金强,李俊峰,王昭阳,等. 干旱绿洲区3种典型农田防护林的水分来源[J]. 石河子大学,2019,39(1):72-77.
APA	王金强,李俊峰,王昭阳,杨广,&何新林.(2019).干旱绿洲区3种典型农田防护林的水分来源.水土保持通报,39(1),72-77.
MLA	王金强,et al."干旱绿洲区3种典型农田防护林的水分来源".水土保持通报 39.1(2019):72-77.