Arid
DOI10.1016/j.jhazmat.2013.06.049
Irrigation agriculture affects organic matter decomposition in semi-arid terrestrial and aquatic ecosystems
Arroita, Maite1; Causape, Jesus2; Comin, Francisco A.3; Diez, Joserra4; Jose Jimenez, Juan3; Lacarta, Juan3; Lorente, Carmen3; Merchan, Daniel2; Muniz, Selene3; Navarro, Enrique3; Val, Jonatan3; Elosegi, Arturo1
通讯作者Arroita, Maite
来源期刊JOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
EISSN1873-3336
出版年2013
卷号263页码:139-145
英文摘要

Many dryland areas are being converted into intensively managed irrigation crops, what can disrupt the hydrological regime, degrade soil and water quality, enhance siltation, erosion and bank instability, and affect biological communities. Still, the impacts of irrigation schemes on the functioning of terrestrial and aquatic ecosystems are poorly understood. Here we assess the effects of irrigation agriculture on breakdown of coarse organic matter in soil and water. We measured breakdown rates of alder and holm oak leaves, and of poplar sticks in terrestrial and aquatic sites following a gradient of increasing irrigation agriculture in a semi-arid Mediterranean basin transformed into irrigation agriculture in 50% of its surface. Spatial patterns of stick breakdown paralleled those of leaf breakdown. In soil, stick breakdown rates were extremely low in non-irrigated sites (0.0001-0.0003 day(-1)), and increased with the intensity of agriculture (0.0018-0.0044 day(-1)). In water, stick breakdown rates ranged from 0.0005 to 0.001 day(-1), and increased with the area of the basin subject to irrigation agriculture. Results showed that irrigation agriculture affects functioning of both terrestrial and aquatic ecosystems, accelerating decomposition of organic matter, especially in soil. These changes can have important consequences for global carbon budgets. (C) 2013 Elsevier B.V. All rights reserved.


英文关键词Irrigation agriculture Ecosystem functioning Breakdown Stream Soil
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000330814500019
WOS关键词LEAF-LITTER DECOMPOSITION ; LAND-USE ; SOIL PROPERTIES ; MEDITERRANEAN REGION ; TRACE-ELEMENTS ; CLIMATE-CHANGE ; WATER-QUALITY ; BREAKDOWN ; CARBON ; IMPACTS
WOS类目Engineering, Environmental ; Environmental Sciences
WOS研究方向Engineering ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178460
作者单位1.Univ Basque Country, Fac Sci & Technol, Bilbao 48080, Spain;
2.Geol Survey Spain, Zaragoza 50006, Spain;
3.CSIC, Inst Pirenaico Ecol, Zaragoza 50059, Spain;
4.Univ Basque Country, Fac Educ, Vitoria 01006, Spain
推荐引用方式
GB/T 7714
Arroita, Maite,Causape, Jesus,Comin, Francisco A.,et al. Irrigation agriculture affects organic matter decomposition in semi-arid terrestrial and aquatic ecosystems[J],2013,263:139-145.
APA Arroita, Maite.,Causape, Jesus.,Comin, Francisco A..,Diez, Joserra.,Jose Jimenez, Juan.,...&Elosegi, Arturo.(2013).Irrigation agriculture affects organic matter decomposition in semi-arid terrestrial and aquatic ecosystems.JOURNAL OF HAZARDOUS MATERIALS,263,139-145.
MLA Arroita, Maite,et al."Irrigation agriculture affects organic matter decomposition in semi-arid terrestrial and aquatic ecosystems".JOURNAL OF HAZARDOUS MATERIALS 263(2013):139-145.
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