IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Alternative TitleEnergy Balance in the Irrigational Intercropping Field in the Middle Reaches of Heihe River
吴锦奎1,2; 丁永建1,2; 沈永平1; 王根绪1
Corresponding Author吴锦奎
Source Publication冰川冻土
Other Abstract



Based on experiments conducted in an intercropping field in Zhangye Oasis in the middle reaches of Heihe River in 2004, the characteristics of radiation budget are analyzed. Furthermore, en- ergy balance is calculated by using Bowen-Ratio Energy Balance (BREB) method. It is found that the ratio of absorbed radiation to incoming short radiation in an intercropping canopy-soil system increases with growing stage, from 0.81 in the initial growing stage (IGS) to 0.86 in the end growing stage (EGS). The net radiation, which is smaller in IGS, increases rapidly in the first phase of the middle growing stage (MGS) and reaches the maximum in the second phase of MGS. Then it decreases somewhat in EGS. The ratio of net radiation to incoming radiation has a similar trend with the net radiation. In the whole growing stage, latent heat flux, which takes up 70% or so of the net radiation, is the dominant item in energy balance. Sensible heat flux shares 20% of the net radiation and soil heat flux accounts for 10%. The characteristics of energy balance vary distinctly with growing stages. In the IGS, the ratios of latent heat flux, sensible heat flux and soil heat flux are 44.5%, 23.8% and 31.7%, respectively. In the MGS, with the increase of latent heat flux and the decrease of sensible heat flux and soil heat flux, the ratios turn into 84.4%, 6.3% and 9.3%. In the EGS, the soil heat flux maintains 0 W·m^(-2) or so. The net radiation can be divided into two parts: latent heat flux and sensible heat flux. The former and the latter take up 61.4% and 38.6%, respectively. The energy balance also shows an obvious daily variation.

Keyword辐射收支 能量平衡 间作 黑河中游
Subject AreaS181
Indexed ByCSCD ; 北大中文核心
Funding Organization中日合作项目“黑河流域水文过程研究” ; 中国气象局气候变化专项(CCSF-2005-2-QH39)
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
吴锦奎,丁永建,沈永平,等. 黑河中游间作灌溉农田的能量平衡[J]. 冰川冻土,2006,28(3):443-449.
APA 吴锦奎,丁永建,沈永平,&王根绪.(2006).黑河中游间作灌溉农田的能量平衡.冰川冻土,28(3),443-449.
MLA 吴锦奎,et al."黑河中游间作灌溉农田的能量平衡".冰川冻土 28.3(2006):443-449.
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