低丘红壤区农田水热通量变化特征及气候学足迹

doi:10.13287/j.1001-9332.201701.032

应用生态学报 ›› 2017, Vol. 28 ›› Issue (1): 180-190.doi: 10.13287/j.1001-9332.201701.032

低丘红壤区农田水热通量变化特征及气候学足迹

李阳^1,2,3, 景元书^1,2,3*, 秦奔奔^1,2,3

¹气象灾害预报预警与评估协同创新中心, 南京 210044
²江苏省农业气象重点实验室, 南京 210044
³南京信息工程大学应用气象学院, 南京 210044

收稿日期:2016-07-21 修回日期:2016-11-02 发布日期:2017-01-18
通讯作者: *E-mail:jingyshu@163.com
作者简介:李阳,女,1992年生,硕士研究生.主要从事应用气象与生态环境研究.E-mail:lynuist68@163.com
基金资助:
本文由国家自然科学基金项目(41575111、41175098)和第九批“六大人才高峰”高层次人才项目(NY-038)资助

Characteristics of water and heat fluxes and its footprint climatology on farmland in low hilly region of red soil

LI Yang^1,2,3, JING Yuan-shu^1,2,3*, QIN Ben-ben^1,2,3

¹Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing 210044, China
²Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing 210044, China
³Institute of Applied Meteorology, Nanjing University of Information Science &Technology, Nanjing 210044, China

Received:2016-07-21 Revised:2016-11-02 Published:2017-01-18
Contact: *E-mail:jingyshu@163.com
Supported by:
This work was supported by the National Natural Science Foundation of China (41575111, 41175098)and the 9th High-Level Program of Talent Peak in Six Industry (NY-038)

摘要/Abstract

摘要： 农田水热通量的变化特征以及气候学足迹分析对加强区域气候资源管理和提高红壤地区水热资源利用率有重要意义.利用低丘红壤区的大孔径闪烁仪和自动气象站数据,在保证数据质量的基础上,详细分析了低丘红壤区农田在非雨季、作物生长旺期不同时间尺度水热通量的变化特征和观测通量的源区分布特征.结果表明: 水热通量的日变化呈单峰型,但与晴天相比较,多云天的日变化曲线波动更为复杂;无论是旬尺度还是月尺度, 8月的水热通量整体上都大于9月,且净辐射通量都更多地用于潜热交换,但9月潜热通量所占净辐射比例相较于8月有所减少,感热通量则相反;受气象条件(尤其是风)、稳定度和下垫面状况影响,不同时间尺度的观测通量源区特征不同;结合下垫面作物来看,不同时间尺度源区的通量贡献来源也不同.

Abstract: The analysis of the characteristics and footprint climatology of farmland water and heat fluxes has great significance to strengthen regional climate resource management and improve the hydrothermal resource utilization in the region of red soil. Based on quality controlled data from large aperture scintillometer and automatic meteorological station in hilly region of red soil, this paper analyzed in detail the characteristics of farmland water and heat fluxes at different temporal scales and the corresponding source area distribution of flux measurement in the non-rainy season and crop growth period in hilly region of red soil. The results showed that the diurnal variation of water and heat fluxes showed a unimodal trend, but compared with the sunny day, the diurnal variation curves fluctuated more complicatedly on cloudy day. In the whole, either ten-day periods or month scale, the water and heat fluxes were greater in August than in September, while the net radiation flux was more distributed to latent heat exchange. The proportion of net radiation to latent heat flux decreased in September compared to August, but the sensible heat flux was vice versa. With combined effects of weather conditions (particularly wind), stability, and surface condition, the source areas of flux measurement at different temporal scales showed different distribution characteristics. Combined with the underlying surface crops, the source areas at different temporal scales also had different contribution sources.

李阳, 景元书, 秦奔奔. 低丘红壤区农田水热通量变化特征及气候学足迹[J]. 应用生态学报, 2017, 28(1): 180-190.

LI Yang, JING Yuan-shu, QIN Ben-ben. Characteristics of water and heat fluxes and its footprint climatology on farmland in low hilly region of red soil[J]. Chinese Journal of Applied Ecology, 2017, 28(1): 180-190.

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低丘红壤区农田水热通量变化特征及气候学足迹

Characteristics of water and heat fluxes and its footprint climatology on farmland in low hilly region of red soil

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