降水与森林相互作用机理的探讨

降水条件很大程度上决定了森林生态环境的演变。相反，森林的变化对降水在群落中的分布状况，甚至大气降水的形成过程都会产生影响。本文应用系统的生态学、植物生态学、气象学、地理空间分析等和方法，研究了降水与森林相互作用的一些规律性，并刻意从森林的宏观动态和微观动态两方面探讨了森林与降水的相互作用机理。作者认为，森林的生长动态对降水的影响主要表面对水分的再分配；而森林面积的锐减却通过减少大气中的凝结核和减少

A STUDY OF THE INTERACTION MECHANISM BETWEEN PRECIPITATION AND FOREST

The condition of precipitation has considerably determined the varies in forest ecological environment,the forest dynamics,in return,must have made an important influence to rainfall distribution in the community,and even to shaping procedure of precipitation in the atomsphere.This paper has discussed some regularities of the interaction between precipitation and forest by applying curtain theories and/or methods of system ecology,plant ecology,meteorology,and spatial analysis of geography.Moreover,the interactive mechanism within forest and precipitation were stressed from two aspects of silvan dynamic states-one of macrocosmic (the change of woodland area),the other of microcosimc(growth of the silvan community).Finally,author realized that the forest growth dynamics act precipitation only by redistribution rainfall within community,but the dynamics of woodland area decreasing fast would act the process of precipitation by reducing the steam condensation nucleus in atomsphere and/or reducing vapor input to air.At the presant day,lower latitude forest on tropical and subtropical zone has been chopped down widely in the world.With the forest in the region disappeared as time passing,the exchange procedure of matter and energy flow between atomsphere and forest will slow down.Therefore,it will more or less alter the shaping conditions of global precipitaiton.