Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1590/1807-1929/agriambi.v19n1p3-8 |
Environmental control on water vapour and energy exchanges over grasslands in semiarid region of Brazil | |
Gondim, Patricia S. de S.1; Lima, Jose R. de S.1; Antonino, Antonio C. D.2; Hammecker, Claude3; da Silva, Renan A. B.1; Gomes, Clarissa A.1 | |
通讯作者 | Gondim, Patricia S. de S. |
来源期刊 | REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL |
ISSN | 1807-1929 |
出版年 | 2015 |
卷号 | 19期号:1页码:3-8 |
英文摘要 | A micrometeorological experiment was conducted over grasslands in a semi-arid region of north-eastern Brazil (Sao Joao, Pernambuco) from January to December 2011, using the Bowen ratio energy balance method, to improve the current understanding of energy partitioning and water vapour exchange over this ecosystem in this region. The objectives of the present study were to quantify the seasonal and diurnal variations in energy and water vapour exchanges over grasslands and understand the biotic and abiotic factors controlling the energy partitioning of this ecosystem. In the dry period, the low stored soil water limited the grass production and leaf area index, and as a consequence of these conditions, most of the annual net radiation (58%) was consumed in sensible heat flux. During the course of the study the evaporative fraction was linearly related to the leaf area index. The total annual evapotranspiration and its daily maximum were 543.8 mm and 3.14 mm d(-1). The seasonal and diurnal variations in energy partitioning and evapotranspiration were controlled by soil water availability and leaf area index. |
英文关键词 | evapotranspiration soil water content leaf area index |
类型 | Article |
语种 | 英语 |
国家 | Brazil ; France |
收录类别 | SCI-E |
WOS记录号 | WOS:000352003700001 |
WOS关键词 | INTERANNUAL VARIATION ; INNER-MONGOLIA ; EVAPOTRANSPIRATION ; STEPPE ; PASTURE ; BALANCE |
WOS类目 | Agricultural Engineering |
WOS研究方向 | Agriculture |
来源机构 | French National Research Institute for Sustainable Development |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/190248 |
作者单位 | 1.UFRPE, UAG, Garanhuns, PE, Brazil; 2.Univ Fed Pernambuco, DEN, Recife, PE, Brazil; 3.IRD, Land Dev Dept, Off Sci Land Dev, Montpellier, France |
推荐引用方式 GB/T 7714 | Gondim, Patricia S. de S.,Lima, Jose R. de S.,Antonino, Antonio C. D.,et al. Environmental control on water vapour and energy exchanges over grasslands in semiarid region of Brazil[J]. French National Research Institute for Sustainable Development,2015,19(1):3-8. |
APA | Gondim, Patricia S. de S.,Lima, Jose R. de S.,Antonino, Antonio C. D.,Hammecker, Claude,da Silva, Renan A. B.,&Gomes, Clarissa A..(2015).Environmental control on water vapour and energy exchanges over grasslands in semiarid region of Brazil.REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL,19(1),3-8. |
MLA | Gondim, Patricia S. de S.,et al."Environmental control on water vapour and energy exchanges over grasslands in semiarid region of Brazil".REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL 19.1(2015):3-8. |
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