Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.12.048 |
Simulating the effects of different potassium and water supply regimes on soil water content and water table depth over a rotation of a tropical Eucalyptus grandis plantation | |
Christina, M.1,2,3; le Maire, G.1,2,4; Nouvellon, Y.1,2,5; Vezy, R.1,6; Bordon, B.7; Battie-Laclau, P.1,2,8; Goncalves, J. L. M.7; Delgado-Rojas, J. S.7; Bouillet, J. -P.1,2,7; Laclau, J. -P.1,2,7,9 | |
2018-06-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 418页码:4-14 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Brazil |
英文摘要 | Although large amounts of potassium (K) are applied in tropical crops and planted forests, little is known about the interaction between K nutrition and water supply regimes on water resources in tropical regions. This interaction is a major issue because climate change is expected to increase the length of drought periods in many tropical regions and soil water availability in deep soil layers is likely to have a major influence on tree growth during dry periods in tropical planted forests. A process-based model (MAESPA) was parameterized in a throughfall exclusion experiment in Brazil to gain insight into the combined effects of K deficiency and rainfall reduction (37% throughfall exclusion) on the water used by the trees, soil water storage and water table fluctuations over the first 4.5 years after planting Eucalyptus grandis trees. A comparison of canopy transpiration in each plot with the values predicted for the same soil with the water content maintained at field capacity, made it possible to calculate a soil-driven tree water stress index for each treatment. Compared to K-fertilized trees with undisturbed rainfall (+K+W), canopy transpiration was 40% lower for K deficiency (-K+W), 20% lower for W deficit (+K - W) and 36% lower for combined K deficiency and W deficit (- K - W) on average. Water was withdrawn in deeper soil layers for -W than for + W, particularly over dry seasons. Under contrasted K availability, water withdrawal was more superficial for -K than for +K. Mean soil water content down to 18 m below surface (mbs) was 24% higher for - K+ W than for +K+W from 2 years after planting (after canopy closure), while it was 24% lower for +K-W and 12% lower for -K W than for +K+W. The soil-driven tree water stress index was 166% higher over the first 4.5 years after planting for - W than for +W, 76% lower for -K than for +K, and 14% lower for -K -W than for +K+W. Over the study period, deep seepage was higher by 371 mm yr(-1) (+122%) for -K than for +K and lower by 200 mm yr(-1) (- 66%) for -W than for +W. Deep seepage was lower by 44% for -K- W than for +K+ W. At the end of the study period, the model predicted a higher water table for -K (10 mbs for -K+W and 16 mbs for -K-W) than for +K (16 mbs for +K+W and 18 mbs for +K-W). Our study suggests that flexible fertilization regimes could contribute to adjusting the local trade-off between wood production and demand for soil water resources in planted forests. |
英文关键词 | Water resources Groundwater Brazil Eucalyptus Deep roots Nutrients |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432498500002 |
WOS关键词 | LIGHT-USE EFFICIENCY ; CLIMATE-CHANGE ; HYDRAULIC ARCHITECTURE ; CARBON ALLOCATION ; DROUGHT ; GROWTH ; MODEL ; TREE ; FORESTS ; LEAF |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23696 |
专题 | 气候变化 |
作者单位 | 1.CIRAD, UMR Eco&Sols, F-34398 Montpellier, France; 2.Univ Montpellier, Eco&Sols, CIRAD, INRA,IRD,Montpellier SupAgro, Montpellier, France; 3.CIRAD, UR AIDA 115, F-34398 Montpellier, France; 4.Univ Estadual Campinas, NIPE, BR-13083970 Campinas, SP, Brazil; 5.Univ Sao Paulo, Dept Ciencias Atmosfer, BR-05508900 Sao Paulo, SP, Brazil; 6.INRA, UMR 1391, ISPA, F-33140 Villenave Dornon, France; 7.Univ Sao Paulo, ESALQ, BR-13418900 Piracicaba, SP, Brazil; 8.Univ Sao Paulo, CENA, BR-13400970 Piracicaba, SP, Brazil; 9.Univ Estadual Paulista, Dept Solos & Recursos Ambientais, BR-18610300 Botucatu, SP, Brazil |
推荐引用方式 GB/T 7714 | Christina, M.,le Maire, G.,Nouvellon, Y.,et al. Simulating the effects of different potassium and water supply regimes on soil water content and water table depth over a rotation of a tropical Eucalyptus grandis plantation[J]. FOREST ECOLOGY AND MANAGEMENT,2018,418:4-14. |
APA | Christina, M..,le Maire, G..,Nouvellon, Y..,Vezy, R..,Bordon, B..,...&Laclau, J. -P..(2018).Simulating the effects of different potassium and water supply regimes on soil water content and water table depth over a rotation of a tropical Eucalyptus grandis plantation.FOREST ECOLOGY AND MANAGEMENT,418,4-14. |
MLA | Christina, M.,et al."Simulating the effects of different potassium and water supply regimes on soil water content and water table depth over a rotation of a tropical Eucalyptus grandis plantation".FOREST ECOLOGY AND MANAGEMENT 418(2018):4-14. |
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