宁南退耕还草区近地面湍流通量观测初报

生态学杂志 ›› 2004, Vol. ›› Issue (6): 171-173.

宁南退耕还草区近地面湍流通量观测初报

张晓煜, 王连喜, 袁海燕

宁夏气象防灾减灾重点试验室, 银川, 750002

收稿日期:2003-11-05 修回日期:2004-02-23 出版日期:2004-12-10
通讯作者: 张晓煜,男,1968年生,硕士,高工.主要研究方向为作物气象和生态环境监测与评估.
基金资助:
国家科技部社会公益类研究专项基金资助项目(2001DIB10089)

A primary study on turbulent fluxes over surface layer in the region of cropland to grassland conversion in southern Ningxia

ZHANG Xiaoyu, WANG Lianxi, YUAN Haiyan

Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction, Yinchuan 750002, China

Received:2003-11-05 Revised:2004-02-23 Online:2004-12-10

摘要/Abstract

摘要： 根据2002～2003年小气候考察资料,分别分析了四季晴天条件下宁南退耕还草区净辐射、感热、潜热和土壤热通量比例和变化特征。结果表明,近地层各通量有较规则的日变化。白天,感热通量占净辐射的50%以上,一般达80%～100%。只有夏季全天和秋季白天的潜热通量为正,在春季的早晨和秋季的傍晚潜热通量为负。冬春季节土壤的热量收支大于夏秋季节。

关键词: 顶芽动态, 计盒维数, 分枝类型, 分枝格局

Abstract: Based on the data of microclimatic observation during 2002 to 2003,and using Bowen ratio energy balance method,the characteristics of net radiation flux,sensible heat flux,latent heat flux and heat flux in soil over surface in the region of cropland to grassland conversion in southern Ningxia were analyzed respectively.The results showed that the fluxes changed regularly during day time.Sensible heat flux was up to 50% of net radiation and generally reached 80%～100%.The latent fluxes were positive in all day in summer and daytime in autumn,and those in the morning of spring and evening of autumn were negative.The budget of heat fluxes in soil in spring and winter were greater than that in summer and autumn.

Key words: Fate of apex buds, Box-counting dimension, Branching type, Branching pattern

中图分类号:

张晓煜, 王连喜, 袁海燕. 宁南退耕还草区近地面湍流通量观测初报[J]. 生态学杂志, 2004, (6): 171-173.

ZHANG Xiaoyu, WANG Lianxi, YUAN Haiyan. A primary study on turbulent fluxes over surface layer in the region of cropland to grassland conversion in southern Ningxia[J]. cje, 2004, (6): 171-173.

参考文献

[1]王澄海,董文杰,韦志刚,等.2002.典型干旱地区陆面特征的模拟及分析[J].高原气象,21(5):466～472.
[2]左洪超,胡隐樵.1994.黑河地区绿洲和戈壁小气候特征的季节变化及对比分析[J].高原气象,13(3):246 256.
[3]吴洪颜,申双和,徐为根,等.2000.关于棉田感热通量和潜热通量的几种计算方法[J].气象科学,20(4):537～542.
[4]张强,卫国安,黄荣辉.2001.西北干旱区戈壁动量和感热总体输送系数[J].中国科学,D辑,31(9):783～792.
[5]翁笃鸣,陈万隆,沈觉成,等.1981.小气候和农田小气候[J].北京:农业出版社,59～93.
[6]高正中,戴法和.1988.宁夏植被[J].银川:宁夏人民出版社,2～4.
[7]高艳红,吕世华.2001.黑河实验区非均匀地表能量通量的数值模拟[J].高原气象,20(2):246～256.
[8]曹文俊,刘吉成,陶立英.1995.不同气象条件下湍流通量的研究[J].南京气象学院学报,18(1):65～71.
[9]Cellier P and Olioso A. 1993. A simple system for automated longterm Bowen ratio measurement[J ]. Agric. For. Meteorol., 66:81 ～92.
[10]Cooper DI, Eichinger WE, Kao J, et al. 2000. Spatial and temporal properties of water vapor and latent energy flux over a riparian canopy[J]. Agric. For. Meteorol., 105: 161～ 183.
[11]Denby B and Smeets CJPP. 2000. Derivation of turbulent flux profiles and roughness lengths from Katabatic flow dynamics[J ].J . Appl . Meteorol . , 39:1601 ～ 1612.
[12]Dyer AJ, Hicks BB. 1970. Flux gradient transport of heat and water in an unstable atmosphere[J]. Q J R Meteorol. Soc., 93:501 ～ 508.
[13]Hicks BB. 1976. Winds profile relationships from the Wangara experiment[J ]. Q JR Meteorol . Soc., 93: 535～ 551.
[14]Jerald AB and Kenneth CC. 2000. Estimating sensible heat flux from Oklahoma Mesonet [ J ]. J. Appl. Meteorol., 39:102 ～111.
[15]Pereira LS. 1996. The WMO FAO UNEP Roving Seminar on Application of Climatic Data for Effective Planning and Management of Sustainable Irrigated agriculture [ M ]. Beijing: Teaching Materials. 33 ～ 106.
[16]Todd RW, Evett SR, Howell TA. 2000. The Bowen ratio - energy balance method for estimating latent flux of irrigated alfalfa evaluated in semi - arid, adventive environment [J ]. Agric. For.Meteorol.. 103: 335～ 348.