Present Distribution and Condition of War-damaged Trees in Three East Tokyo Wards

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  • 東京都城東３ 区における戦災樹木の残存状況と損傷状態に関する研究
  • トウキョウト ジョウトウ 3ク ニ オケル センサイ ジュモク ノ ザンソン ジョウキョウ ト ソンショウ ジョウタイ ニ カンスル ケンキュウ

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Abstract

Almost seventy years have passed since the Second World War, and there are very few physical reminders of it. The people who personally remember the war are quite old now. Trees damaged during the war are historical relics, and their number and distribution are unknown because there has been little research conducted on these trees. In this study, we surveyed three wards—Taito, Sumida, and Koto—which were the main targets of the air raids on Tokyo on March 10, 1945, to establish the distribution and number of war-damaged trees as well as their present condition. We determined that 1) war-damaged trees were unevenly distributed and mainly concentrated in some public parks, temple precincts and edge of the target area of air raids; 2) there may be previously undiscovered war-damaged trees; 3) some of the trees that were earlier recognized were now gone; 4) carbonation and hollowing are the main features of war-damaged trees, with 60.2% showing carbonation and 52.6% showing hollowing; 5) the degree of these damages and vigor of the trees were not correlated in ginkgo trees; however, the other species seemed to be heavily influenced. More study of the relation between damage type and vigor is required.

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