Study on reorganization of the Sugi (Cryptomeria japonica) forest working systems in Tohoku district.

东北地区杉木森林作业系统重组研究。

• 批准号: 04454079
• 负责人: SHIBATA Nobiaki
• 金额: $ 2.43万
• 依托单位: Iwate University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04454079/
• 关键词: Cryptomeria japonica; forest working system; mixed stand; logging technology; forest management; スギ; 東北地方; 森林施業; 生理・生態; 帯状更新地; 複層林施業; 光環境; 混交林施業; 帯状皆伐法; 凍裂; 光条件

This study was investigated so as to present the way of reorganization of the Sugi (Cryptomeria japonica) forest working systems in Tohoku district. The results of this study are as follows.1) In Sugi working system, it is desirable to change itself from the treatment of monoculture forest to the treatment of mixed forest.2) In the traditional working system of monoculture forest, there are many afforestational techniques that should be improved, the method of planting area and composition, final cutting age, cleaning cutting and thinning, and so on.3) Accordingly development of the stand canopy clearly is divided into four different stages on the bases of the changes in the net production rate.4) Row thinning operations by a mobile tower-yader was preferable to select thinning operations in terms of labor productivity, but was not preferable in terms of cost. The intensity of soil disturbance caused by row thinning operations was lower than by select thinning operations.5) Because of the long-term depression of forestry, the Sugi forest management practice is mostly supported by the rural farm household labors.

本研究旨在探讨日本东北地区柳杉林作业系统重组之途径。研究结果表明：1）杉林作业系统由单一经营林向混交林转变是可取的; 2）传统的单一经营林作业系统在造林面积和结构、主伐年龄、清伐间伐、人工造林、3）根据净生产率的变化，林分冠层发育可明显分为4个不同的阶段; 4）从劳动生产率的角度考虑，采用移动的塔式作业机进行间伐作业是较好的选择，但从成本的角度考虑，采用塔式作业机进行间伐作业并不可取。间伐作业对土壤的干扰强度低于选择性间伐作业。5）由于林业长期萧条，杉林经营实践主要依靠农村农户劳动力支撑。

项目成果

Masao Shishiuchi and Yasuyuki Satomura: "Economic Problems and Soil Disturbance of Thinning Operations by a Mobile Tower-yarder-Comparison of Row Thinning Operations with Select Thinning Operations." Bulletin of the Iwate University Forests. 26 (in press)

Masao Shishiuchi 和 Yasuyuki Satomura：“移动塔码机间伐作业的经济问题和土壤扰动 - 行间伐作业与选择性间伐作业的比较”。

Masao Shishiuchi and Yasuyuki Satomura: "Economic Problems and Soil Disturbance of Thinnig Operations by a Mobile Tower-yarder." Bulletin of the Iwate University Forests. 26. 印刷中 (1995)

Masao Shishiuchi 和 Yasuyuki Satomura：“移动塔式造粒机的疏伐作业的经济问题和土壤干扰”，岩手大学森林公报 26。出版中（1995 年）。

橋本良二: "若いスギ林における葉群の分布構造と受光状態" 日本林学会誌. 74. 466-474 (1992)

Ryoji Hashimoto：“雪松幼林叶群的分布结构和光接收状况”日本林业学会杂志 74. 466-474 (1992)。

白旗 学.橋本良二: "スギ樹冠内各位置における一次枝上に着生するショートの葉齢の光合成測度" 104回日本林学会論文集. 104. 509-510 (1993)

Manabu Shirahata 和 Ryoji Hashimoto：“日本雪松树冠不同位置的初级枝上生长的短叶年龄的光合作用测量”第 104 届日本林业学会会议记录 104. 509-510 (1993)。

岡田秀二: "山間地農林の現状-'90年のセンサス分析-" 日本林学会東北支部会誌. 44. 1-4 (1992)

Shuji Okada：“山区农业和林业的现状 - 90 人口普查分析” 日本林业学会东北分会杂志 44. 1-4 (1992)。