兰州大学学报(自然科学版)
蘭州大學學報(自然科學版)
란주대학학보(자연과학판)
JOURNAL OF LANZHOU UNIVERSITY(NATURAL SCIENCES)
2013年
6期
727-732
,共6页
李常斌%杨林山%王帅兵%杨文瑾
李常斌%楊林山%王帥兵%楊文瑾
리상빈%양림산%왕수병%양문근
潜在蒸散发%Penman-Monteith模式%时空变化%洮河流域
潛在蒸散髮%Penman-Monteith模式%時空變化%洮河流域
잠재증산발%Penman-Monteith모식%시공변화%조하류역
potential evapotranspiration%Penman-Monteith module%variation in time and space%Tao River basin
基于常见6种潜在蒸散发估算模式的对比、遴选及应用,就1981-2010年洮河流域E T0的时空变化特征进行研究。模式遴选结果表明Penman-Monteith模式在洮河流域潜在蒸散发计算中的精度最高。将该模式应用到洮河流域,发现洮河流域自上游甘南草原至下游黄土农耕区,潜在蒸散发逐渐增高。过去30年,洮河流域E T0总体呈上升趋势,气温升高为主导因素。增幅以牧林农混合区最大,山地森林区和黄土农耕区次之,甘南草原区最小。
基于常見6種潛在蒸散髮估算模式的對比、遴選及應用,就1981-2010年洮河流域E T0的時空變化特徵進行研究。模式遴選結果錶明Penman-Monteith模式在洮河流域潛在蒸散髮計算中的精度最高。將該模式應用到洮河流域,髮現洮河流域自上遊甘南草原至下遊黃土農耕區,潛在蒸散髮逐漸增高。過去30年,洮河流域E T0總體呈上升趨勢,氣溫升高為主導因素。增幅以牧林農混閤區最大,山地森林區和黃土農耕區次之,甘南草原區最小。
기우상견6충잠재증산발고산모식적대비、린선급응용,취1981-2010년조하류역E T0적시공변화특정진행연구。모식린선결과표명Penman-Monteith모식재조하류역잠재증산발계산중적정도최고。장해모식응용도조하류역,발현조하류역자상유감남초원지하유황토농경구,잠재증산발축점증고。과거30년,조하류역E T0총체정상승추세,기온승고위주도인소。증폭이목임농혼합구최대,산지삼림구화황토농경구차지,감남초원구최소。
Accuracy assessments of potential evapotranspiration (ET0) estimation from six selected modules were conducted and the best module based on a comparison of the assessments was adopted to simulate the ET0 variation from 1981-2010 across the Tao River basin. Accuracy assessments resulted in the best module of Penman-Monteith method for ET0 estimation in the TRB. Application of the best module concluded that there has been an increase of the regional ET0 in the TRB along with the increase of the air temperature. Additional analysis revealed that ET0 spatially grew from the upper reaches to the lower reaches. The maximum amplification of ET0 was found in the area of pastoral forest with cultivation while the minimum one was found in the area of single pasture in the upper reaches of the TRB. Amplification of ET0 in areas of mountainous forest in the middle reaches and loessial cultivation in the lower reaches of the TRB were of intermediate degree when compared with the above two.