干旱区生态环境知识资源中心(Arid): 内蒙古半干旱草原能量物质交换的微气象方法估算

Arid

	内蒙古半干旱草原能量物质交换的微气象方法估算
其他题名	The Estimate of Energy and Mass Exchanges in Inner Mongolia Semi-Arid Grassland Using Micrometeorological Methods
	朱治林; 孙晓敏; 张仁华; 唐新斋; 苏红波; 唐登银
来源期刊	气候与环境研究
ISSN	1006-9585
出版年	2002
卷号	7 期号:3 页码:351-358
中文摘要	根据1998年5～8月和1999年8月在中国科学院内蒙古草原生态系统定位试验站进行微气象观测的资料，作者分析了该地区能量平衡及其各分量的基本特征。结果表明：（1）净辐射通量的转化形式有明显的季节性变化，5～6月份，净辐射能大部分用于感热交换，而后期则多用于潜热交换，5～8月份的日波文比值分别为1.26，1.42，0.41和0.20。（2）观测期间，波文比的日变化的特征表现为，早晚变化不大稳定，而白天则相对稳定。（3）用涡度相关方法观测的和潜热通量之和与同期净辐射相比较，前乾的结果偏小15％左右，两种方法观测到的潜热通量的差异达平均35％左右。（4）半干旱草原CO_2通量有明为的日变化，在生长旺期，白天CO_2通量强度可达到1.56 mgs~(-1)m~(-2)和0.2 mgs~(-1)m~(-2)左右；有差异与草地土壤水分和植物长势有关。
英文摘要	In order to study the energy, water and CO_2 status of Semi-Arid Grassland, some micrometeorological methods were employed to measure at the Inner Mongolia Grassland Research Station, Chinese Academy of Sciences, from May to August, 1998 and in August, 1999. The main methods were Eddy Correlation (EC) and Bowen Ratio-Energy Balance (BREB). Based on the data, authors analyzed the basic characteristics of energy balance components in the area. Meanwhile, the most of net radiation was used to the sensible exchange in May and June, and was used to latent exchange in July and August, the mean Bowen-Ratio for May, June, July, and August Were 1.26, 1.42, 0.41 and 0.2, respectively. (2) During the observations, the diurnal variation characteristic of Bowen Ratio was bigger and unsteady at the sunrise and sunset, smaller and steady in the remainder of a daytime. (3) The sum of sensible and latent heat fluxes density measured by EC method was smaller than that by BREB method. (4) CO_2 flux density has an obvious diurnal change, in daytime of the growing stage, the maximum of CO_2 flux density were more than about 1.5 mgs~(-1)m~(-2), and in the late of growing stage (in August), the average of CO_2 flux density was about 0.38 mgs~(-1)m~(-2) and 0.2 mgs~(-1)m~(-2) in 1998 and in 1999, respectively. The differences are related to the soil moisture and growing status of grassland.
中文关键词	感热通量 ; 潜热通量 ; CO_2通量 ; 微气象方法 ; 半干旱草原
英文关键词	sensible heat flux latent heat flux CO_2 flux micrometeorological method semi-arid grassland
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:1042239
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/203354
作者单位	中国科学院地理科学与资源研究所, 北京 100101, 中国
推荐引用方式 GB/T 7714	朱治林,孙晓敏,张仁华,等. 内蒙古半干旱草原能量物质交换的微气象方法估算[J]. 中国科学院地理科学与资源研究所,2002,7(3):351-358.
APA	朱治林,孙晓敏,张仁华,唐新斋,苏红波,&唐登银.(2002).内蒙古半干旱草原能量物质交换的微气象方法估算.气候与环境研究,7(3),351-358.
MLA	朱治林,et al."内蒙古半干旱草原能量物质交换的微气象方法估算".气候与环境研究 7.3(2002):351-358.