研究了日本中部的3个风景林——常绿针叶林、常绿阔叶林和常绿落叶阔叶混交林的凋落物，养分归还量和养分利用效率.常绿针叶林、常绿阔叶林和常绿落叶阔叶混交林的年凋落量分别为7562、6023和5565kg/hm2，养分年归还量分别为233.87、125.20和140.23kg/hm2.各养分中N、K和Ca的归还量大于P和Mg.叶的养分归还量占养分年归还量的64.19%～79.29%.常绿针叶林和常绿阔叶林中Mg的利用效率高，表明Mg可能是这2种风景林生长的限制因子.%Litterfall amounts, nutrients returned by litterfall and nutrientuse efficiency in evergreen coniferous forest, evergreen broad-leaved forest, and evergreen and deciduous broad-leaved mixed forest of Central Japan were studied. Annual amounts of litterfall in evergreen coniferous forest, evergreen broad-leaved forest, and mixed forest were 7 562， 6 023 and 5 565 kg/hm2, respectively, which resulted in the amount of nutrient contained in litterfall being 233.87, 125.20 and 140.23 kg/hm2, respectively. Returned amounts of N, K and Ca were greater than P and Mg in all scenic forests, and leaves contributed 64.19%～79.29% of the total. A high Mg use efficiency in evergreen coniferous forest and evergreen broad-leaved forest indicates that Mg may be in a limited supply in the two scenic forests.
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