Forest in winter : 無料・フリー素材/写真
Forest in winter / Oregon State University
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | New research indicates that conifers in the Pacific Northwest may face their greatest stress from inadequate water during the rainy winter months, due to the effect of freeze-thaw cycles. (Photo courtesy of Oregon State University) |
| 撮影日 | 2011-07-20 16:24:45 |
| 撮影者 | Oregon State University |
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