自然植被净第一性生产力模型及其应用

本文利用中国１２５组天然成熟森林资料及Ｅｆｉｍｏｖａ在ＩＢＰ期间获得的世界各地的２３组森林，草地及荒漠等自然被资料应用及相应的气候资料对目前流行的气候生产力模型；Ｍｉａｍｉ模型，Ｔｏｒｎｔｈｗａｉｔｅ Ｍｅｍｏｒｉａｌ 模型，Ｃｈｉｕｋｇｏ模型，综合模型及北京模型的适用性进行了研究。结果表明：Ｃｈｉｋｕｇｏ模型，北京模型与综合模型都能较好地反应森林净第一性生产力状况，但对于干旱半干旱地区，模型与综

NPP MODEL OF NATURAL VEGETATION AND ITS APPLICATION IN CHINA

Comparison of NPP model of natural vegetation among Miami model,Thornthwaite Memorial model,Chikugo model,Synthetic model and Beijing model has been done based on 125 sets of natural mature forest NPP data in China and 23 sets of NPP of natural vegetation obtained during IBP by Efimova, including forest, grassland and desert. The result shows that Chikugo model,Synthetic model and Beijing model can simulate NPP of natural forest,however,the two latter can simulate NPP of natural vegetation better in semiarid and arid areas than the former. The distribution of NPP of natural vegetation in China and its response to global warming are also presented in this paper. The NPP of natural vegetation in China increases from northwest to southeast, and will increase in different degrees under global climate change. The NPP of natural vegetation will increase more in moist area, and less in semiarid and arid areas. The limitation factor of NPP is the shortage of water.