Stand Structure and Regeneration Dynamics of Old-Growth Chamaecyparis Stands in the Kiso District, Central Japan

日本中部木曾地区老桧林的林分结构和再生动态

• 批准号: 63560151
• 负责人: YAMAMOTO Shin-ichi
• 金额: $ 1.66万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63560151/
• 关键词: Canopy gap; Chamaecyparis; Large-plot study; Litter fall; Kiso district; Regeneration dynamics; Seed production; Stand structure; 木曽地方; ヒノキ; サワラ; 撹乱; 林冠ギャップ; 発芽基質; 赤沢学術参考保護林; 天然更新施業; 森林動態; 実生の定着; 天然林の維持機構; 根株更新; 赤沢自然休養林

Stand structure and regeneration dynamics of old-growth Chamaecyparis stands in the Kiso district, central Japan, were studied during 1985 to 1990. A shape of dbh-class distributions was normal in Chamaecyparis obtusa dominated stands, but that was inverse J-shaped in a Chamaecyparis pisifera - hardwood stand. These shapes did not change for the five years. Mortality of canopy trees (dbh<greater than or equal>20cm) occurred in C. obtusa stand with 1.3-3.1% mortality, but no canopy trees died in the C. pisifera - hardwood stnd. Mortality of understory trees (dbh<20cm, height<greater than or equal>1.3cm) was 8.3-22.9% and the value of Thujopsis dolabrata was 12.2-22.9%. Abundance of new seedlings fluctuated annually ; many seedlings of C. obtusa emerged in 1986 and those of C. pisifera emerged in 1987 and 1989. Ex-posed mineral soils in a recently disturbed stand was the most favourable site for seedling recruitment of C. obtusa. Seed production of Chamaecyparis also fluctuated annually ; 4,479 seeds per sq. m of C. obtusa was produced in a abundant year and 4,324 seeds per sq. m for C. pisifera. Amount of leaf litter-fall was about 3ton/ha/yr in C. obtusa stands. There were 7,186 trees (dbh<greater than or equal>5cm) including 718 dead trees in a 4ha plot ; dbh class distributions of C. obtusa and C. pisifera were bimodal in shape without lacked classes and the kistribution of Quercus mon-golica var. grosseserrata was also bimodal but with lacked classes. The distribution of T. dolabrata showed inverse J-shaped. Canopy trees of C. obtusa randomly dispersed, but the understory trees did patchily. Canopy trees of T. dolabrata showed a nearly random distribution, and the understory trees occurred over a whole area in the plot. C. pisifera showed a nearly random in its distribution of canopy trees and a patchy distribution in the understory trees. Understory trees of Q. mongolica also showed a patch

1985 ~ 1990年，对日本中部木曾地区的老杉木林分结构和更新动态进行了研究。胸径级分布的形状是正常的Chamaoparis obtusa占主导地位的立场，但这是倒J形Chamaoparis pisifera阔叶林，这些形状没有改变的五年。胸径20 cm以上的冠层木死亡<greater than or equal>率在C. obtusa林分死亡率为1.3-3.1%，而C. pisifera -硬木标准林下乔木（胸径&lt;20 cm，树高1.3cm）死亡率<greater than or equal>为8.3-22.9%，崖柏死亡率为12.2- 22.9%。幼苗的生长量逐年波动，大量的幼苗生长在同一时期。obtusa于1986年出现，C. pisifera出现于1987年和1989年。在一个最近被干扰的林分中，暴露的矿质土壤是最有利的幼苗补充地点。钝角。Chama-paris的种子产量也每年波动;每平方米4，479粒种子。m的C. obtusa产量丰年，每平方米种子4,324粒。m为C.豌豆。落叶量约为3 t/ha/yr。obtusa站。在<greater than or equal>4 hm 2样地中，有胸径5cm的乔木7,186株，其中死木718株; obtusa和C. pisifera为双峰型，无缺类; Grosseserrata也是双峰型，但缺乏类。研究了T. dolabrata呈倒J形。C. obtusa随机分散，但林下的树木却参差不齐。T. dolabrata表现出几乎随机的分布，林下树木在整个样地中出现。C.豌豆在林冠乔木层的分布呈近随机性，在林下乔木层的分布呈斑块状。林下乔木Q.蒙古也显示了一个补丁，

项目成果

Shin-ichi Yamamoto: "Seedling recruitment of some conifers in old-growth Chamaecyparis stands of the Kiso disteict, central Japan" Canadian Journal of Forest Research.

Shin-ichi Yamamoto：“日本中部木曾区老桧林中一些针叶树的幼苗补充”《加拿大森林研究杂志》。

Shin-ichi Yamamoto: "Sees production and litter fall dynamics in old-growth Chamaecyparis stands of the Kiso district, central Japan" Canadian Journal of Forest Research.

Shin-ichi Yamamoto：“观察日本中部木曾地区老桧林的产量和凋落物掉落动态”《加拿大森林研究杂志》。

Shinーichi Yamamoto: "Size class structure and tree dispersion pattern in an oldーgrowth Chamaecyparis stand of the Kiso district,central Japanーa large plot studyー" Canadian Journal of Forest Research.

Shinichi Yamamoto：“日本中部木曾区老桧林的大小等级结构和树木分散模式——一项大型样地研究”《加拿大森林研究杂志》。

Shinーichi Yamamoto: "Seed production and litter fall dynamics in oldーgrowth Chamaecyparis stands of the Kiso district,central Japan" Canadian Journal of Forest Research.

Shinichi Yamamoto：“日本中部木曾地区老树桧林的种子生产和凋落物掉落动态”《加拿大森林研究杂志》。

Shinーichi Yamamoto: "Size class structure and tree dispersion pattern in an oldーgrowth Chamaecyparis stand of the Kiso district,central Japan" Canadian Journal of Forest Research.

Shinichi Yamamoto：“日本中部木曾地区老桧林的尺寸等级结构和树木分布模式”《加拿大森林研究杂志》。