CAJ | 학술논문

通过应用野外称重法测定的折算系数对莫高窟林地的蒸散量进行估算与分析。结果表明，莫高窟林地的年蒸散量为6091 mm，符合耗散结构的非线性原理，是较高水平蒸散耗散结构存在的表现。莫高窟林地75％的水分是通过植物根系将深层土壤水分转运出地面后以蒸腾的形式耗散掉的。蒸散量作为各参与因子时空异质性的综合反映，随着土壤水分状况、气候环境、植被种类和植物体量的变化呈现广泛非线性表现。而非线性系统不满足线性叠加原理。因此，本文通过使用折算系数，避免了用蒸发量和蒸腾量的简单的相互叠加，充分考虑了土壤蒸发、植被蒸腾和气候环境之间的相互影响。研究发现，莫高窟林地蒸散量是极干旱气候条件下高水分耗散结构的典型代表。
통과응용야외칭중법측정적절산계수대막고굴임지적증산량진행고산여분석。결과표명，막고굴임지적년증산량위6091 mm，부합모산결구적비선성원리，시교고수평증산모산결구존재적표현。막고굴임지75％적수분시통과식물근계장심층토양수분전운출지면후이증등적형식모산도적。증산량작위각삼여인자시공이질성적종합반영，수착토양수분상황、기후배경、식피충류화식물체량적변화정현엄범비선성표현。이비선성계통불만족선성첩가원리。인차，본문통과사용절산계수，피면료용증발량화증등량적간단적상호첩가，충분고필료토양증발、식피증등화기후배경지간적상호영향。연구발현，막고굴임지증산량시겁간한기후조건하고수분모산결구적전형대표。
The conversion coefficient measured by the weighing method is used to estimate and analyze the woodland evapo-transpiration at the Mogao Grottoes.The results show that the annual evapotranspiration of woodland is 6 091 mm,in accord with nonlinear theory of the dissipative structure.It is the manifestation that there is a high level evapotranspiration dissipa-tive structure.There is 75% water that is dissipated by transpiration manner,which transports deep soil water to ground through the plant root system.For that evapotranspiration is a concentrated expression of space-time heterogeneity character-istics of all participation factors,it shows a broad nonlinearity with the soil moister,climate condition,vegetation type and the space of plant.Because the nonlinearity system dissatisfies linearity plus principle,the conversion coefficient is used to avoid the simple superposition of evaporation and transpiration,fully considering interaction effects of soil evaporation,vegetation transpiration and climate condition.It's found that the evapotranspiration at Mogao Grottoes is a representation of high water dissipative structure under the extremely dry climate condition.