Arid
DOI10.1080/15324982.2015.1091399
Water deficit and corn productivity during the post-socialist period. Case study: Southern Oltenia drylands, Romania
Pravalie, Remus1; Patriche, Cristian Valeriu2; Sirodoev, Igor3; Bandoc, Georgeta1; Dumitrascu, Monica4; Peptenatu, Daniel5
通讯作者Pravalie, Remus
来源期刊ARID LAND RESEARCH AND MANAGEMENT
ISSN1532-4982
EISSN1532-4990
出版年2016
卷号30期号:3页码:239-257
英文摘要

Water deficit (WD) typically associated with drylands and poor land use currently represent a major limiting factor for agricultural systems in numerous regions of the world. The present study aims to analyze the relationship between water deficit and corn (Zea mays L) crop yields in southern Oltenia drylands. The study includes the post-1990 period, which is representative for Romania in terms of ample climate changes and poor land planning decisions affecting water resources. This analysis targeted the vegetation period of corn (April-September), the reference period covering a 14-year interval, from 1990 to 2003. The entire analysis was based on spatialized WD data (mm), obtained by interpolation methods used on climate data provided by regional weather stations, and agricultural yield data (tons/hectare/year), recorded in 113 administrative territorial units. Both data sets were analyzed in terms of interannual statistical relationships, established in compact climate zones delineated by Thiessen-Voronoi polygons. The results showed a clear statistical relationship between the two variables, with an average dependence of corn yields on water of approximately 65%. The range was from 55 to 78%, depending on region. The results showed an average yield decrease of 16.5 kg/ha/year for each mm rise of the WD, or loss of 1.65 t/ha/year when considering a deficit rise of 100 mm. Therefore, in the context of increasing future WD, urgent action is needed in order to reintroduce irrigation systems.


英文关键词Agricultural yields corn drylands southern Oltenia statistical analysis water deficit
类型Article
语种英语
国家Romania
收录类别SCI-E
WOS记录号WOS:000376986000002
WOS关键词LAST 5 DECADES ; CLIMATE-CHANGE ; POTENTIAL EVAPOTRANSPIRATION ; AIR-TEMPERATURE ; FOOD SECURITY ; ARID REGION ; TRENDS ; PRECIPITATION ; DYNAMICS ; IMPACT
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191512
作者单位1.Univ Bucharest, Fac Geog, Ctr Coastal Res & Environm Protect, 1 Nicolae Balcescu Str, Bucharest, Romania;
2.Romanian Acad, Iasi Div, Geog Dept, Iasi, Romania;
3.Univ Bucharest, Fac Geog, Interdisciplinary Ctr Adv Res Territorial Dynam, Bucharest, Romania;
4.Romanian Acad, Inst Geog, Bucharest, Romania;
5.Univ Bucharest, Fac Geog, Bucharest, Romania
推荐引用方式
GB/T 7714
Pravalie, Remus,Patriche, Cristian Valeriu,Sirodoev, Igor,et al. Water deficit and corn productivity during the post-socialist period. Case study: Southern Oltenia drylands, Romania[J],2016,30(3):239-257.
APA Pravalie, Remus,Patriche, Cristian Valeriu,Sirodoev, Igor,Bandoc, Georgeta,Dumitrascu, Monica,&Peptenatu, Daniel.(2016).Water deficit and corn productivity during the post-socialist period. Case study: Southern Oltenia drylands, Romania.ARID LAND RESEARCH AND MANAGEMENT,30(3),239-257.
MLA Pravalie, Remus,et al."Water deficit and corn productivity during the post-socialist period. Case study: Southern Oltenia drylands, Romania".ARID LAND RESEARCH AND MANAGEMENT 30.3(2016):239-257.
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