| Cite this article: | 乔 英,张百和,邱凯,等.基于涡度系统的干旱区枣林能量平衡分析[J].灌溉排水学报,0,():-. |
| Qiao Ying,Zhang Baihe,Qiu Kai,et al.基于涡度系统的干旱区枣林能量平衡分析[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 1055Times Download 0Times |
|
|
|
| DOI： |
|
| Energy balance analysis of Jujube forests in arid areas based on the eddy covariance method |
|
Qiao Ying, Zhang Baihe, Qiu Kai, Wang Tengfei
|
|
Xinjiang Institute of Technology
|
| Abstract: |
| 【Objective】Revealing the energy cycle and energy change patterns in arid zone jujube forest can help to dynamically evaluate the energy balance and distribution patterns in arid zone jujube forest ecosystems and improve the efficiency of agricultural water use. 【Method】This study used the eddy correlation method to obtain flux data of jujube forests in the arid zone for 2 consecutive years, and analyzed the energy change pattern, distribution mode and the daily average change pattern of energy of thermal storage term. 【Result】The results showed that (1) the daily average energy changes of net radiation Rn, latent heat flux LE, sensible heat flux H and soil heat flux G in jujube forest ecosystem in the arid zone in each month showed a single-peaked change based on the net radiation change pattern. (2) The annual 30-minute energy closure of jujube forest in arid area was 73.45% and 73.11%, and the energy closure increased by 2.75% and 3.72% to 77.17% and 75.86% respectively after adding heat storage item. (3) The average daily changes of soil heat storage term in jujube forests in arid zones were similar in fertility and dormancy; the latent heat storage term and sensible heat storage term had different patterns of changes in fertility and dormancy; the photosynthetic heat storage term and canopy heat storage term were both zero in dormancy and had typical daily changes in fertility.【Conclusion】The thermal storage term has little contribution to the energy balance closure of the jujube forest ecosystem in arid areas. The energy allocation plan of jujube forests in arid areas is influenced by water conditions, vegetation types, and climate characteristics. |
| Key words: arid area; jujube forests; eddy covariance method; energy balance |
|
|
|
|
|
|
