干旱区生态环境知识资源中心(Arid): 古尔班通古特沙漠南缘梭梭(Haloxylon ammodendron)群落能量平衡及蒸散特征

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	古尔班通古特沙漠南缘梭梭(Haloxylon ammodendron)群落能量平衡及蒸散特征
其他题名	Energy balance and evapotranspiration characteristics of Haloxylon ammodendron community in the southern margin of the Gurbantunggut Desert
	李传金; 胡顺军; 郑博文
来源期刊	生态学报
ISSN	1000-0933
出版年	2021
卷号	41 期号:1 页码:92-100
中文摘要	梭梭是北方荒漠区重要的固沙植物,具有较强的荒漠环境适应能力。研究梭梭群落能量及蒸散变化对科学管理水资源、保护与建设生态植被等有重大意义。基于波文比自动观测系统在古尔班通古特沙漠南缘丘间地实时连续测定的2018年气象和能量数据,运用波文比-能量平衡法对梭梭群落能量平衡和蒸散特征进行了分析。结果表明:梭梭生长季(410月)太阳净辐射和土壤热通量的日变化呈单峰状分布,净辐射通量最高值出现在13: 30左右,土壤热通量最大值出现时间比净辐射推迟2 h,波文比在梭梭生长旺盛期全天变化稳定,萌发期和枯落期白天变化较小,夜间波动较大,湍流通量以显热通量为主;在晴天和阴雨天条件下,梭梭生长旺盛期的日蒸散量均明显大于萌发期和枯落期,且日蒸散量在旺盛期呈双峰型,萌发期和枯落期呈单峰型; 2018年梭梭生长季蒸散量为279.67 mm,日均蒸散强度1.31 mm/d,梭梭群落的蒸散受到气象、自身生长特性以及土壤水分的影响,4月蒸散强度开始逐渐增大,由于多阴雨天气导致6月的蒸散强度有所降低,7月达到最大,910月水分、温度等条件缺乏,梭梭生理活动微弱,蒸散强度急剧减小。
英文摘要	Haloxylon ammodendron is an important sand-fixing plant in the desert area of north China,which has a very strong ability to survive in high temperature,drought,severe cold and barren desert environment. Evapotranspiration,as the main component of water balance and energy balance in arid desert ecosystem,is an important link between its ecological process and hydrological process. It is of great significance to study the energy balance and evapotranspiration of Haloxylon ammodendron community for scientific management of water resources,protection and construction of ecological vegetation, improvement of ecological environment and maintenance of oasis stability. Based on the meteorological and energy data measured by the Bowen ratio system on the southern edge of the Gurbantunggut Desert in 2018,the energy balance and evapotranspiration characteristics of the Haloxylon ammodendron community were analyzed by Bowen ratio-energy balance method. The results showed that during the growth period of Haloxylon ammodendron,the daily changes of solar net radiation and soil heat flux were distributed in a single peak. The highest value of net radiant flux appears at around 13: 30 noon. The appearance time of the maximum value of soil heat flux had a hysteresis,which was delayed by 2 h than the net radiation. Bowen ratio changed steadily throughout the day in the strong growth period. For the germination period and the withering period,Bowen ratio was relatively stable in daytime,unstable during nighttime. Haloxylon ammodendron grew in an arid and waterless environment for a long time,and the evapotranspiration became smaller. Therefore,sensible heat energy transfer was main component in growth season. Under sunny and rainy days,the daily evapotranspiration in the strong growth period was significantly greater than that in the germination period and the withering period. The daily evapotranspiration showed a double-peak type in the strong growth period,a single-peak type in the germination period and the withering period. The evapotranspiration in the growing season of Haloxylon ammodendron was 279.67 mm,and the average daily evapotranspiration intensity was 1.31 mm/d. The evapotranspiration of Haloxylon ammodendron community was affected by weather,self-growth characteristics and soil moisture. The evapotranspiration intensity began to increase gradually in April and decreased in June due to rainy weather. The evapotranspiration reached its maximum in July. Because of the lack of moisture and temperature in September-October,the physiological state of Haloxylon ammodendron started to wither and fall,and the intensity of evapotranspiration decreased sharply.
中文关键词	波文比 ; 梭梭群落 ; 蒸散 ; 能量平衡
英文关键词	Bowen ratio Haloxylon ammodendron community evapotranspiration energy balance
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:6889982
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354397
作者单位	李传金, 中国科学院新疆生态与地理研究所;;新疆阿克苏农田生态系统国家野外科学观测研究站;;中国科学院大学, 荒漠与绿洲生态国家重点实验室;;新疆阿克苏农田生态系统国家野外科学观测研究站;;, 乌鲁木齐;;阿克苏;;, ;;;;北京 830011;;843000;;100049. 郑博文, 中国科学院新疆生态与地理研究所;;新疆阿克苏农田生态系统国家野外科学观测研究站;;中国科学院大学, 荒漠与绿洲生态国家重点实验室;;新疆阿克苏农田生态系统国家野外科学观测研究站;;, 乌鲁木齐;;阿克苏;;, ;;;;北京 830011;;843000;;100049. 胡顺军, 中国科学院新疆生态与地理研究所;;新疆阿克苏农田生态系统国家野外科学观测研究站, 荒漠与绿洲生态国家重点实验室;;新疆阿克苏农田生态系统国家野外科学观测研究站, 乌鲁木齐;;阿克苏, ;; 830011;;843000.
推荐引用方式 GB/T 7714	李传金,胡顺军,郑博文. 古尔班通古特沙漠南缘梭梭(Haloxylon ammodendron)群落能量平衡及蒸散特征[J],2021,41(1):92-100.
APA	李传金,胡顺军,&郑博文.(2021).古尔班通古特沙漠南缘梭梭(Haloxylon ammodendron)群落能量平衡及蒸散特征.生态学报,41(1),92-100.
MLA	李传金,et al."古尔班通古特沙漠南缘梭梭(Haloxylon ammodendron)群落能量平衡及蒸散特征".生态学报 41.1(2021):92-100.