浑太流域实际蒸散的时空变化特征及影响因素

应用生态学报

浑太流域实际蒸散的时空变化特征及影响因素

冯雪^1,2,蔡研聪^1,2,关德新¹,金昌杰¹，王安志^1**，吴家兵¹，袁凤辉¹

（¹中国科学院沈阳应用生态研究所森林与土壤生态国家重点实验室, 沈阳 110164; ^2 中国科学院大学, 北京 100049）

出版日期:2014-10-18 发布日期:2014-10-18

Spatiotemporal variation characteristics and related affecting factors of actual evapotranspiration in the Hun-Taizi River Basin, Northeast China.

FENG Xue^1,2, CAI Yan-cong^1,2, GUAN De-xin¹, JIN Chang-jie¹, WANG An-zhi¹, WU Jia-bing¹, YUAN Feng-hui¹

(¹State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; ² University of Chinese Academy of Sciences, Beijing 100049, China)

Online:2014-10-18 Published:2014-10-18

摘要/Abstract

摘要：

基于浑太流域1970—2006年气象、水文资料，采用参数率定后的平流-干旱（AA）模型计算浑太流域蒸散.根据水量平衡法得到的蒸散结果对模型的原始参数进行调整，并在4个子流域进行验证.采用线性趋势分析、滑动平均法、克里金插值、灵敏度分析方法研究浑太流域蒸散的时空变化和影响因素.结果表明： AA模型经验参数（0.75）在浑太流域上的计算误差为11.4%，表明AA模型在浑太流域上是可行的；浑太流域年均蒸散量为347.4 mm，并以1.58 mm·(10 a)^-1的速率略呈上升趋势，但上升趋势不明显，年内呈单峰变化，峰值出现在7月；季节变化上，夏季最大，冬季最小，春季高于秋季；整个流域实际蒸散量呈现从西北至东南逐渐减少的分布特征，但差异不大；净辐射是影响浑太流域蒸散变化的主导因素.

Abstract:

Based on the meteorological and hydrological data from 1970 to 2006, the advection-aridity (AA) model with calibrated parameters was used to calculate evapotranspiration in the HunTaizi River Basin in Northeast China. The original parameter of the AA model was tuned according to the water balance method and then four subbasins were selected to validate. Spatiotemporal variation characteristics of evapotranspiration and related affecting factors were analyzed using the methods of linear trend analysis, moving average, kriging interpolation and sensitivity analysis. The results showed that the empirical parameter value of 0.75 of AA model was suitable for the HunTaizi River Basin with an error of 11.4%. In the Hun-Taizi River Basin, the average annual actual evapotranspiration was 347.4 mm, which had a slightly upward trend with a rate of 1.58 mm·(10 a^-1), but did not change significantly. It also indicated that the annual actual evapotranspiration presented a singlepeaked pattern and its peak value occurred in July; the evapotranspiration in summer was higher than in spring and autumn, and it was the smallest in winter. The annual average evapotranspiration showed a decreasing trend from the northwest to the southeast in the HunTaizi River Basin from 1970 to 2006 with minor differences. Net radiation was largely responsible for the change of actual evapotranspiration in the Hun-Taizi River Basin.

冯雪1,2,蔡研聪1,2,关德新1,金昌杰1，王安志1**，吴家兵1，袁凤辉1. 浑太流域实际蒸散的时空变化特征及影响因素[J]. 应用生态学报.

FENG Xue1,2, CAI Yan-cong1,2, GUAN De-xin1, JIN Chang-jie1, WANG An-zhi1, WU Jia-bing1, YUAN Feng-hui1. Spatiotemporal variation characteristics and related affecting factors of actual evapotranspiration in the Hun-Taizi River Basin, Northeast China.[J]. Chinese Journal of Applied Ecology.