Timber harvest scheduling simulations oriented toward SFM (Sustainable Forest Management) in plantation forests

森林生態系や水土保全機能の維持管理をも視野に入れた包括的な人工林管理計画策定法の可能性について, GISを援用した収穫計画・配分モデルを開発して検討した.滋賀県の造林公社事業地内スギ造林地を対象に, 80年輪伐期施業を想定したシミュレーションの結果, 許容単位伐区面積, 最小許容伐期齢, 隣接伐区間の緑被期間等の諸伐採規制条件に相応した伐採個所が適確に抽出されること, 分期ごとに目標とする伐採面積が確保されつつ伐採面積分布の適正化が図られること, 最終分期において法正的な林分構造に漸近すること等が確認された.一方, 生態学的な条件を考慮した伐採規制のパラメータを組み込むことで, 伐採面の分散と小面積化が図られ, 現状の比較的単純な大面積パッチ優占の構造から大小さまざまな大きさのパッチ群からなる多様な森林空間構造が形成されることも認められた.本システムは, 人工林の利用と保全のトレードオフをバランスする適応型の森林管理策定法の一形態であると位置付けられる.In this paper we discussed the development of Spatial Decision Support System (SDSS) in combination with a raster GIS which offers image processing capabilities (IDRISI32) and a harvest schedule/allocation model which allows simulation of landscape perspective concerned (HARVEST). Application potential was illustrated through examples of predicting changes in landscape patterns with spatial attributes resulting from the initial landscape conditions and potential timber harvest activities combined with technical opportunities, constrains, and their trade-off. Using the proposed approach, resource managers could have the flexibility to design and demonstrate the long-term conservation outlook of forest resources under alternative management strategies geared to multiple economic, environmental, and social objectives

火球衝撃波の解析

取得学位：博士(理学)，学位授与番号：博甲第609号，学位授与年月日：平成16年3月25日,学位授与年：200

K0 アツミツ ジョウタイ ニオケル ガッサン クロボク ノ センダン トクセイ

【はじめに】土の構成式の研究は，この数年非常に活発であるが，泥炭や黒ボクといった有機質土の剪断特性については，鉱質土に比べてまだ不明な点が多いといわれている9).わが国では，北海道東南，東北，関東，九州の各地に有機質火山灰土が広く分布している.これらの多くは，山地や，丘陵，台地に分布するが， 開畑などの農地土工，観光開発などの山岳道路などにおいて，土質工学的な問題を提起している.ところで，一般に盛土地盤での土の強度の推定には，等方圧密による圧密非排水試験の結果が参考にされる.しかし， 実際の自然地盤では等方圧密は特殊な場合であり， 鉛直と水平の応力が異なるK0圧密地盤を形成している.本研究は低有機質土である月山黒ボクを中心に，比較のために粘性土で、ある月山下層土などを用いて， K0圧密と等方圧密の剪断特性を比較検討し，その特性を明らかにするものである

〔報文〕日岡古墳の保存施設内における温熱環境の調査

From the conservation point of view, one of the main problems in the shelter for Hinooka Tumulus is condensation on the ceiling and walls especially in winter.In order to understand the mechanism of the formation of condensation and to consider countermeasures to prevent it, the thermal environment inside the shelter was investigated by on-site measurements and calculations using a simulation program, NETS. From the on-site measurements, it was found that the relative humidity inside the shelter is almost 100% throughout the year. During the night, particularly in winter, the temperature on the surface of the ceiling and walls drops rapidly and becomes lower than the dew point, resulting in the formation of condensation. The result of calculation obtained by NETS reproduced the measurement result reasonably well. Assuming that 10cm of soil is stacked on the roof of the shelter, the thermal environment was recalculated by using NETS. As a result, the calculation predicted that the variation of temperature on the surface of the ceiling would be moderated because thermal insulation was increased.This analysis result indicates the possibility of reducing condensation by supplementing materials on the roof

〔報告〕うきは市内装飾古墳の保存環境について

For the decorated tombs which have been designated as historic site in Ukiha City, Fukuoka Prefecture,a temperature-humidity measurement was performed to evaluate the conservation environment in the stone chamber or shelter. At first the decorated tombs were classified into three groups according to whether a mound or a stone chamber is left and whether preservation maintenance has been carried out: (a) a mound or a stone chamber is not left,and remaining wall stones are directly covered by shelter,(b)a mound or a stone chamber is left,and a shelter closing the entrance of the stone chamber has been built, (c)a mound and a stone chamber both remain but no preservation maintenance has been undertaken. As a result, it was found that in type (a) the effect of the shelter was restrictive although the shelter reduced the influence of sunlight and temperature change was small. Type (b)was maintained in a stable environment at high humidity, and the effect of theshelter at the entrance of stone chamber was confirmed. The environmental condition of type (c)was kept well but, compared with (b), the outside influence was observed slightly more

北海道内の女子大学生バスケットボールおよびバドミントン選手に対する月経に関するアンケート調査

長距離ランナーや審美系などの競技において月経異常は問題視されているが，その他の競技の大学生アスリートにおける月経に関する問題は十分に明らかとなっていない。本研究の目的は北海道内の大学生女性アスリートに対し，月経による問題を明らかにすることとした。大学生女性アスリート38名を対象に，国立スポーツ科学センターにおけるメディカルチェックで使用される婦人科問診票を用いて月経に関するアンケート調査を行なった。対象者の専門種目はバスケットボールとバドミントン（ともに全国大会レベル）とした。調査時期は2018年10月〜11月であった。月経周期が規則的であるのは84.2％であった。月経痛について「ほとんどない」は5.3％で，「少しあるが日常生活に支障がない」は57.9％，「薬を飲まないとダメ」は36.8％であった。競技に支障をきたす症状があったのは82.1％で，イライラを訴えたのが最も多かった。コンディションの良い時は月経と関係なしとしたのは44.7％で，コンディションの悪い時を月経中と答えたのは47.7％であった。婦人科受診経験のない割合は68.2％で，月経移動を知らないと答えたのは33.3％であった。本結果より，大学生アスリートにおいても月経痛やその他の月経随伴症状によって競技に支障をきたす割合が高く，正しい知識やコンディション管理法を教育・啓蒙の必要性が明らかとなった。Although menstrual disorders are regarded as a problem in athletes such as longdistance running and aesthetic sports, problems related to menstruation in other competitive sports are not sufficiently clear. The aim of this study was to clarify the problems related to menstruation for female collegiate athletes in Hokkaido. A questionnaire survey on menstruation was conducted for 38 female athletes using the gynecological questionnaires used for medical checkups at Japan Institute of Sports Sciences （JISS）．The subject athletes were basketball or badminton players who participated in national tournaments. The study period was from 1st October until 30th November 2018. We found that 84.2% of subject athletes had regular menstrual cycles. Five-point three percent of subject athletes had "almost no" menstrual pain. Fifty-seven-point nine percent of the athletes reported "Little pain without influence on daily life", and "medication required" was 36.8%. The percentage of athletes with menstrual symptoms that hindered competition was 82.1%. The most common complaint was a feeling of irritation. Athletes of 44.7% answered that their good conditions were not related to the menstrual cycle, and 47.7% answered to present bad conditions during menstruation. The percentage of athletes who had never consulted a gynecologist was 68.2%. Athletes of 33.3% did not know the method to shift menstual cycles. These results presented that a high percentage of collegiate athletes suffered from menstrual pain and other menstrual symptoms in their competitive sports life, thus suggesting the necessity of education and enlightenment about informed knowledge and condition management methods

Atmosphere - Ocean - Solid Earth Interaction from Microseisms & Microbaroms recorded at Syowa Station, East Antarctica

第33回極域気水圏シンポジウム11月30日（火） 国立極地研究所 ２階大会議