To understand how ectomycorrhizal (ECM), wood-decomposing (WDC) and litter-decomposing (LDC) fungi differ in abundance and fruiting season, fruiting-body production was monitored by counting their number and/or measuring their biomass in deciduous broad-leaved and coniferous forests in Ishikawa (central Japan) and Hokkaido (northern Japan). ECM fungi were dominant in forests of both types in Ishikawa and a Larix kaempheri forest in Tomakomai (Hokkaido), whereas WDC fungi were dominant in a deciduous broad-leaved forest in Sapporo (Hokkaido). ECM and WDC fungi usually showed two abundance peaks in Kanazawa (Ishikawa), mid-summer and autumn for ECM fungi and spring or summer and autumn for WDC fungi, whereas LDC fungi usually showed one peak in autumn. In Tomakomai, the abundance peak appeared later in ECM fungi but earlier in LDC and WDC fungi in comparison with Kanazawa. The mode of resource acquisition is assumed as one of factors that affect the seasonal timing of fruiting-body production. On the other hand, highly positive correlations were often observed between precipitation in Jun or Aug and the fruiting-body production in summer and/or autumn in the survey in Kanazawa, suggesting that precipitation could affect the fruiting-body production a few months later.

为了了解外生菌根（ECM），木材分解（WDC）和凋落物分解（LDC）真菌在丰度和结实季节方面如何不同，通过计数落叶和阔叶落叶中的子实体的数量和/或测量其生物量来监测子实体的产量和石川（日本中部）和北海道（日本北部）的针叶林。在石川和落叶松的两种森林中，ECM真菌均占主导地位Tom小牧（北海道）的森林，而WDC真菌在札幌（北海道）的落叶阔叶林中占主导地位。ECM和WDC真菌通常在金泽（石川县）显示两个丰度峰，ECM真菌在仲夏和秋季，WDC真菌在春季或夏季和秋季，而LDC真菌通常在秋季显示一个峰。在Tom小牧，与金泽相比，丰度峰值出现在ECM真菌中较晚，而LDC和WDC真菌中则较早。资源获取方式被认为是影响子实体生产季节时机的因素之一。另一方面，在金泽市的调查中，通常在6月或8月的降水与夏季和/或秋季的子实体产量之间观察到高度正相关，