Applying the island biogeography theory to highly urbanized areas, urban greens, urbanized area and neighboring mountain can be compared to islands, ocean and continent, respectively. Relations between species richness i.e. number of species of butterflies and environmental factors were examined in island greens in and around Osaka City, Central Japan. Species richness(s), ranging from 6 to 33 among 10 greens，showed a positive correlation with green area (A ha), and a negative correlation, although not significant at 5% level, with distance(D km), from the nearest mountain. Species richness could be predicted by the following equation; S=9.32 logA-0.457D+11.2. A new method for evaluating biodiversity of a given green in the same locality was proposed on the basis of the above equation.
| 情報源 |
【オンライン情報源1】 環境展望台 全国環境研会誌 - JELA_3004014_2005.pdf 【オンライン情報源2】 環境展望台 全国環境研会誌 30巻4号 【オフライン情報源】 【媒体名称】 【備考】全国環境研会誌 30巻4号, 14, (2005) |
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| 配布形式1 |
【交換形式名称】PDF 【版】不明 |
| ファイル識別子 | 56937 |
|---|---|
| 言語 | 日本語 |
| 文字集合 | |
| 親識別子 | |
| 階層レベル | 非地理データ集合 |
| 階層レベル名 | 全国環境研会誌 |
| 日付 | 2011/10/18 |
| メタデータ標準の名称 | JMP |
| メタデータ標準の版 | 2.0 |
