A study on the conservation of the fragmented forest of various kind.

保存在长崎县对马市神社和寺庙区域的零碎的透明植物森林。和中部宫崎县。对物种多样性、物种组成与森林面积的关系进行了研究。鹿儿岛县栗田山、熊本县Ichibusayama、熊本县原生林中的原生绿叶植物数量与原木面积呈高度正相关。还有阿雅，宫崎县的普雷夫。在兵库县乡村森林(次生林)上，为了增加物种多样性，我们通过修剪亮叶灌木、竹子草等方式对植被进行了管理，并对治理后的植被进行了调查。对破碎化的乡村森林进行表层土壤水分状况调查，并对东大福山半天然草地进行了调查，以明确其植被状况及其草地管理。利用等位酶标记技术，对两个种群的特有遗传结构进行了分析。Moran‘s 1表明，凤尾草的斑块大小为3~9m，与多裂凤尾草的斑块大小相同。和粗根鳞毛蕨属(Dryopteris CrassiRhoma)。这表明蕨类种群斑块的大小可能比我们通常认为的要小。

Fragmented lucidophyllous forests preserved in the precincts of shrines and temples in Tsushima, Nagasaki Pref. and central Miyazaki Pref. were investigated on the relationship between species diversity, species composition and forest area. It was found that the number of lucidophyllous species had a high positive correlation with the log area.Primitive lucidophyllous forests in Mt.Kurinodake, Kagoshima Pref., Mt.Ichibusayama, Kumamoto Pref. and Aya, Miyazaki Pref. were investigated on the species diversity in order to compare species diversity of fragmented lucidophyllous forests.On the rural forests (secondary forests) in Hyogo Pref., for the purpose of increasing species diversity, we managed the vegetation by cutting lucidophyllous shrubs and bamboo grasses and so on, and the vegetation has been investigated after the management. The management of vegetation in this manner is effective for the maintenance and increase of species diversity in rural forests.In the fragmented rural forests, surface soil moisture status was investigated.Semi-natural grassland in Mt.Higashi-otafukuyama was investigated to clarify the actual vegetational conditions and its grassland management. We proposed more suitable management of this grassland, one time cutting per year and removal of cutted plants.Allozyme markers were used to characterize marked special genetic structure in two populations of Blechnum niponicum (Kunze) Makino. Moran's 1 indicated that patch size of Blechnum niponicum was 3-9m, as same as in Pteris multifida Poir. and Dryopteris crassirhizoma Nakai. These reveal that fern population patch size may be smaller then that we usually believe.