干旱区生态环境知识资源中心(Arid): 降水对北麓河地区多年冻土活动层水热影响分析

Arid

	降水对北麓河地区多年冻土活动层水热影响分析
其他题名	The effects of precipitation on thermal-moisture dynamics of active layer at Beiluhe permafrost region
	张明礼; 温智; 薛珂; 陈良致; 李德生
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2016
卷号	30 期号:4 页码:159-164
中文摘要	青藏高原降水变化影响高原生态环境的演变、干旱区水资源利用及地表工程结构的稳定性。为研究青藏高原北麓河地区降雨特征及其对活动层能量平衡的影响,以北麓河冻土工程与环境综合观测站2003至2013气象监测数据和活动层水热数据为基础,分析了北麓河地区降水特征及降水与地表水热变化的关系。结果表明: 1)北麓河地区降水以5月至9月降雨为主,近10a来降水和气温呈增加趋势; 2)夏季高频率、小量降雨事件有减少地表净辐射、增加地表蒸发潜热、降低土壤表层温度的作用; 3)在降雨增加背景下冻土活动层含水量并未出现明显的增加趋势,地表蒸发潜热和水汽运移对活动层能量平衡作用不可忽略。
英文摘要	The precipitation changes in Qinghai-Tibet Plateau will dramatically affect the evolution of the plateau ecological environment,water resources utilization in arid areas,and the stability of the surface engineering structure. In order to study the characteristics of precipitation and its effects on the energy balance of active layer, a long term in situ experiment was carried out and precipitation,water content,temperature and heat flux data were extensively measured at a natural ground in Beiluhe area from 2003 to 2014. Based on observed data, precipitation characteristics and the relationship between precipitation and thermal-moisture dynamics in active layer were analyzed. Results show that: 1) rainfall from May to September dominanted the precipitation and the precipitation and air temperature were increasing during the past decade. 2) Frequent and small rainfall events in summer could effectively reduce the surface net radiation,increase the surface latent heat of evaporation and cool the soil temperature. 3) There was not obvious moisture accumulation in active layer under the background of increasing precipitation,which showed the latent heat of surface evaporation and moisture migration in active layers should not be neglected.
中文关键词	多年冻土 ; 能量平衡 ; 现场监测 ; 降水 ; 北麓河 ; 降雨入渗
英文关键词	permafrost energy balance field monitoring precipitation Beiluhe area rainfall infiltration
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:5655427
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234360
作者单位	中国科学院寒区旱区环境与工程研究所, 冻土工程国家重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	张明礼,温智,薛珂,等. 降水对北麓河地区多年冻土活动层水热影响分析[J]. 中国科学院西北生态环境资源研究院,2016,30(4):159-164.
APA	张明礼,温智,薛珂,陈良致,&李德生.(2016).降水对北麓河地区多年冻土活动层水热影响分析.干旱区资源与环境,30(4),159-164.
MLA	张明礼,et al."降水对北麓河地区多年冻土活动层水热影响分析".干旱区资源与环境 30.4(2016):159-164.