兰州大学机构库 >大气科学学院
黄土高原半干旱区农田生态系统蒸散与作物系数特征
Alternative TitleCharacteristics of evapotranspiration and crop coefficient of agroecosystems in semi-arid area of Loess Plateau, Northwest China
阳伏林; 张强; 王润元; 王胜; 岳平; 王鹤龄; 赵鸿
2013-05-15
Source Publication应用生态学报   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN1001-9332
Volume24Issue:5Pages:1209-1214
Abstract蒸散是地表能量平衡和水分平衡的重要组分,与水循环过程密切相关.采用涡度相关技术,对黄土高原半干旱区农田生态系统2010年生长季(4—9月)蒸散特征进行观测,分析了农田作物系数与环境因子的关系.结果表明:在观测期间,研究区各月潜热通量(LE)日变化呈近似"单峰型"曲线特征,最大峰值出现在8月(151.4 W·m~(-2));日间能量分配方式存在明显季节差异,4—6月的日间能量分配表现为LE/R_nH/R_n)与4-6月相反.黄土高原半干旱区农田日蒸散率存在显著季节变化特征,最大日蒸散率为4.69 mm·d~(...
Other AbstractEvapotranspiration (ET) is an important component of ground surface energy balance and water balance, and closely related to water cycle. By using eddy covariance technique, this paper studied the ET characteristics of agroecosystems in the semi-arid area of Loess Plateau in growth season (from April to September), 2010, and analyzed the relationships between crop coefficient and environmental factors. During the observation period, the diurnal variation of latent heat flux (LE) in each month was similar to single-peak curve, and the peak value (151.4 W x m(-2)) occurred in August. The daytime energy partitioning manner showed a significant seasonal variation, with LE/R(n) < H/R(n) (R(n) was net radiation, and H was sensible heat flux) from April to June, and LE/R(n) > H/R(n) from July to September. The daily ET rate also showed a significant seasonal variation, with the maximum of 4.69 mm x d(-1). The wind speed (W(s)), relative humidity (RH), soil water content (theta), and atmospheric vapor pressure deficit (D) were the major factors affecting the crop coefficient K(c) which was exponentially decreased with increasing W(s), exponentially increased with increasing RH and theta, and linearly decreased with increasing D.
Keyword蒸散 作物系数 Penman-Monteith模型 农田生态系统 涡度相关
Subject AreaEnvironmental Sciences & Ecology ; Plant Sciences
Publication PlaceSHENYANG
Indexed ByPubMed ; MEDLINE ; BIOSIS ; CSCD
Language中文
First Inst
Funding Project国家自然科学基金项目 ; 公益性行业科研专项 ; 中国博士后科学基金  ; 甘肃省自然科学基金计划
Host of Journal中国生态学学会 ; 中国科学院沈阳应用生态研究所
Project Number国家自然科学基金项目(40830957) ; 中国博士后科学基金项目(2012M512044) ; 公益性行业(气象)科研专项(GYHY201106029) ; 甘肃省自然科学基金项目(1208RJYA025) ; 甘肃省气象局气象科研项目(2012-15)资助
CSCD IDCSCD:4950914
Funding OrganizationNSFC ; MOST ; CPSF ; GSSTD
PMID 24015535
BIOSIS IDBIOSIS:PREV201300655946
IRIDCNKI:0058371
Department中国气象局兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室/中国气象局干旱气候变化与减灾重点开放实验室;
甘肃省气象局;
兰州大学大气科学学院
Citation statistics
Cited Times:13[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/129791
Collection大气科学学院
Recommended Citation
GB/T 7714
阳伏林,张强,王润元,等. 黄土高原半干旱区农田生态系统蒸散与作物系数特征[J]. 应用生态学报,2013,24(5):1209-1214.
APA 阳伏林.,张强.,王润元.,王胜.,岳平.,...&赵鸿.(2013).黄土高原半干旱区农田生态系统蒸散与作物系数特征.应用生态学报,24(5),1209-1214.
MLA 阳伏林,et al."黄土高原半干旱区农田生态系统蒸散与作物系数特征".应用生态学报 24.5(2013):1209-1214.
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