Effect of suppression treatment on dwarf bamboo under the canopy using weeding and herbicide: Examination of silvicultural operation for the purpose of advanced regeneration practices in natural hinoki (Chamaecyparis obtusa) forests

被引：0

作者：

Saitoh T. ^{[1
]}

Sakai T. ^{[2
,3
]}

Kabeya D. ^{[2
,3
]}

Sugita H. ^{[4
]}

Kushima H. ^{[5
]}

Hoshino D. ^{[2
,3
]}

Tate N. ^{[6
]}

Hayakawa K. ^{[7
]}

Kubo T. ^{[8
]}

Imamura M. ^{[7
]}

Kuroda M. ^{[9
]}

机构：

[1] Tohoku Research Center, Forestry and Forest Products Research Institute, Forest Research and Management Organization, 9225 Nabeyashiki, Shimokuriyagawa, Iwate, Morioka

[2] Department of Forest Vegetation, Forestry and Forest Products Research Institute, Forest Research and Management Organization, 1 Matsunosato, Ibaraki, Tsukuba

[3] Department of Forest Vegetation, Forestry and Forest Products Research Institute, Forest Research and Management Organization, 1 Matsunosato, Ibaraki, Tsukuba

[4] Forest Research Institute, Toyama Prefectural Agricultural, Forestry and Fisheries Research Center, 3 Yoshimine, Tateyama Town, Toyama, Toyama

[5] Tama Forest Science Garden, Forestry and Forest Products Research Institute, Forest Research and Management Organization, 183381 Todori, Hachioji, Tokyo

[6] Chubu Regional Forest Office, Former Kiso District Forest Office

[7] Kiso District Forest Office, Chubu Regional Forest Office, 141 Shojimacho, Agematsumachi, Nagano, Kisogun

[8] Forestry Conservation Division, Chubu Regional Forest Office, 7155, Nagano, Kurita

[9] Forestry Technology Development and Dissemination Division, Chubu Regional Forest Office, 7155, Nagano, Kurita

来源：

Saitoh, Tomoyuki (tsaitoh@ffpri.affrc.go.jp) | 1600年 / Japanese Forestry Society卷 / 103期

关键词：

Biomass; Field manipulation; Natural regeneration; Non-structural carbohydrate; Silvicultural operation;

D O I：

10.4005/jjfs.103.179

中图分类号：

学科分类号：

摘要：

The dense cover of sasa (dwarf bamboo) often inhibits tree regeneration, and silvicultural operations to control sasa are essential so as to ensure natural regeneration of forests. Operations to control sasa are usually conducted following timber harvesting. Controlling sasa under the closed canopy before timber harvesting is expected to ensure the establishment of advanced seedlings and make tree regeneration more successful. However, the effects of operations to control sasa under the forest canopy before timber harvesting have not been previously examined in Japan. In this study, we conducted a field manipulation in stands hinoki (Chamaecyparis obtusa) natural stand, Kiso region, central Japan, to examine the sustainable suppressing effects of the dwarf bamboo, Sasa palmata, under the closed canopy. We conducted five treatments that combined weeding and herbicide application. Every year from 2013 to 2017, in a 1 m2 quadrat per treatment, we collected the aboveground and belowground parts of sasa and measured their biomass, number of culms, and carbohydrate concentration belowground. Sasa lost its culm emergence ability immediately after the first weeding practice in the three treatments that included weeding, and in the next few years, its belowground biomass disappeared. In contrast, the herbicide treatment slightly decreased the aboveground biomass of sasa, but caused no effects in the belowground biomass, indicating that this treatment does not eliminate sasa. Weeding under the closed canopy was the most suitable method to control sasa, raising the natural regeneration potential of hinoki from advanced regeneration. © 2021 Nihon Ringakkai. All rights reserved.

引用

页码：179 / 185

页数：6