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1. Aboveground biomass equations for individual trees of Cryptomeria japonica, Chamaecyparis obtusa and Larix kaempferi in Japan

Author:
Hosoda, Kazuo; Iehara, Toshiro
Source:
Journal of forest research 2010 v.15 no.5 pp. 299-306
ISSN:
1610-7403
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; Larix kaempferi; aboveground biomass; equations; leaves; models; pure stands; regression analysis; tree and stand measurements; trees; Japan
Abstract:
... Generic equations are proposed for stem, branch and foliage biomass of individual trees in even-aged pure stands of Cryptomeria japonica, Chamaecyparis obtusa and Larix kaempferi. Biomass data was collected from a total of 1,016 individual trees from 247 stands throughout Japan, and five regression models were assessed by root mean square error, mean bias, fit index (FI), and AIC. The results show ...
DOI:
10.1007/s10310-010-0192-y

2. Allometric model of the maximum size–density relationship between stem surface area and stand density

Author:
Inoue, Akio
Source:
Journal of forest research 2009 v.14 no.5 pp. 268-275
ISSN:
1610-7403
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; models; pure stands; stand density; surface area; trees
Abstract:
... An allometric model of the maximum size–density relationship between mean stem surface area and stand density is proposed, and is fitted to data for even-aged pure stands of Japanese cedar (Cryptomeria japonica D. Don) and Japanese cypress (Chamaecyparis obtusa Endl.). To derive the model, the biomass density was defined as the ratio of the mean stem surface area to the side area of an imaginary c ...
DOI:
10.1007/s10310-009-0128-6

3. Allometric model of the Reineke equation for Japanese cypress (Chamaecyparis obtusa) and red pine (Pinus densiflora) stands

Author:
Inoue, Akio; Miyake, Marie; Nishizono, Tomohiro
Source:
Journal of forest research 2004 v.9 no.4 pp. 319-324
ISSN:
1610-7403
Subject:
Chamaecyparis obtusa; Pinus densiflora; allometry; equations; models; stand density; tree crown; trees
Abstract:
... An allometric model that explains the mechanism of the difference in the slope of the Reineke equation (A) among species was proposed based on the allometric relationships of mean tree height (H) to quadratic mean diameter D (H ∝ Dᶿ) and stand density N (H ∝ Nᵟ), i.e., A = θ/δ. The proposed model was fitted to Japanese cypress (Chamaecyparis obtusa Endl.) and red pine (Pinus densiflora) stands. Th ...
DOI:
10.1007/s10310-004-0084-0

4. A model for the relationship between form-factors for stem volume and those for stem surface area in coniferous species

Author:
Inoue, Akio
Source:
Journal of forest research 2006 v.11 no.4 pp. 289-294
ISSN:
1610-7403
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; developmental stages; equations; forests; models; research; stem form; surface area; tree height; trees
Abstract:
... A model that describes the relationship between the form-factors for stem volume and those for stem surface area in coniferous species is proposed. The model is derived assuming that the stem form of a tree can be expressed by Kunze's equation. The model indicated that the form-factor for stem surface area was directly proportional to the square root of the form-factor for stem surface volume, ind ...
DOI:
10.1007/s10310-006-0210-2

5. A Novel Tree Biomass Estimation Model Applying the Pipe Model Theory and Adaptable to UAV-Derived Canopy Height Models

Author:
Machimura, Takashi; Fujimoto, Ayana; Hayashi, Kiichiro; Takagi, Hiroaki; Sugita, Satoru
Source:
Forests 2021 v.12 no.2
ISSN:
1999-4907
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; Japan; biomass; canopy height; forests; geometry; leaf density; lidar; mathematical theory; models; plant architecture; remote sensing; tree and stand measurements; tree crown; trees
Abstract:
... Aiming to develop a new tree biomass estimation model that is adaptable to airborne observations of forest canopies by unmanned aerial vehicles (UAVs), we applied two theories of plant form; the pipe model theory (PMT) and the statical model of plant form as an extension of the PMT for tall trees. Based on these theories, tree biomass was formulated using an individual tree canopy height model der ...
DOI:
10.3390/f12020258

6. Estimation of mean tree height using small-footprint airborne LiDAR without a digital terrain model

Author:
Yamamoto, Kazukiyo; Takahashi, Tomoaki; Miyachi, Yousuke; Kondo, Naoto; Morita, Shinichi; Nakao, Motohiko; Shibayama, Takashi; Takaichi, Yoshiyuki; Tsuzuku, Masashi; Murate, Naoaki
Source:
Journal of forest research 2011 v.16 no.6 pp. 425-431
ISSN:
1610-7403
Subject:
lidar; tree crown; models; regression analysis; methodology; trees; Chamaecyparis obtusa
Abstract:
... In order to estimate mean tree height using small-footprint airborne light detection and ranging (LiDAR) data, a digital terrain model (DTM), which is a continuous elevation model of the ground surface, is usually required. However, generating accurate DTMs in mountainous forests using only the LiDAR data is laborious and time consuming, because it requires human-assisted methods, especially in th ...
DOI:
10.1007/s10310-010-0234-5

7. Evaluation of light dependence of monoterpene emission and its effect on surface ozone concentration

Author:
Nishimura, Hiroshi; Shimadera, Hikari; Kondo, Akira; Bao, Hai; Shrestha, Kundan Lal; Inoue, Yoshio
Source:
Atmospheric environment 2015 v.104 pp. 143-153
ISSN:
1352-2310
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; Pinus densiflora; air quality; air temperature; atmospheric chemistry; emissions; equations; growth chambers; light intensity; models; monoterpenoids; ozone; summer; trees; weather; Japan
Abstract:
... This study evaluated the effect of light intensity on monoterpene emission from the three dominant coniferous tree species in Japan (Cryptomeria japonica, Chamaecyparis obtusa and Pinus densiflora). Monoterpene emission experiments were conducted by using a growth chamber where temperature and light intensity can be controlled. In the experiments, air temperature was set at 30 °C and light intensi ...
DOI:
10.1016/j.atmosenv.2015.01.011

8. Forest canopy interception loss exceeds wet canopy evaporation in Japanese cypress (Hinoki) and Japanese cedar (Sugi) plantations

Author:
Saito, Takami; Matsuda, Hiroki; Komatsu, Misako; Xiang, Yang; Takahashi, Atsuhiro; Shinohara, Yoshinori; Otsuki, Kyoichi
Source:
Journal of hydrology 2013 v.507 pp. 287-299
ISSN:
0022-1694
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; droplets; evaporation; forest canopy; leaf area index; models; plantations; rain; rain intensity; stemflow; throughfall; trees
Abstract:
... The aim of this study is to evaluate rainfall partitioning at the forest canopy and reveal the physical process of canopy interception loss. Observations were conducted for 19months in neighboring stands of Chamaecyparis obtusa Sieb. et Zucc. (Hinoki) and Cryptomeria japonica D. Don (Sugi). Cumulative amounts for the period showed that portions of throughfall (TF), stemflow (SF) and interception ( ...
DOI:
10.1016/j.jhydrol.2013.09.053

9. Mathematical consideration of the pipe model theory in woody plant species

Author:
Ogawa, Kazuharu
Source:
Trees 2015 v.29 no.3 pp. 695-704
ISSN:
0931-1890
Subject:
Abies veitchii; Chamaecyparis obtusa; Cryptomeria japonica; Larix kaempferi; allometry; leaves; models; plant organs; trees; woody plants
Abstract:
... KEY MESSAGE : Using the pipe model theory, a quantitative relationship between leaves and non-green plant organs has been defined that depends on tree size. In the pipe model theory, the cumulative mass of leaves and the density of non-photosynthetic organs at depth (z) from the crown surface of a woody plant are defined as F(z) and C(z), respectively. In this study, the F(z)–C(z) relationship was ...
DOI:
10.1007/s00468-014-1147-2

10. Selection of tree species for plantations in Japan

Author:
Fujikake, I.
Source:
Forest policy and economics 2007 v.9 no.7 pp. 811-821
ISSN:
1389-9341
Subject:
estimation; equations; models; Cryptomeria japonica; regression analysis; trees; stumpage; wage rates; forest plantations; Chamaecyparis obtusa; Japan
DOI:
10.1016/j.forpol.2006.03.009

11. Spatiotemporal factors affecting bark stripping of conifer trees by Asiatic black bears (Ursus thibetanus) in Japan

Author:
Kobashikawa, Shoko; Koike, Shinsuke
Source:
Forest ecology and management 2016 v.380 pp. 100-106
ISSN:
0378-1127
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; Ursus thibetanus; bark; conifers; forest management; foresters; forests; growth rings; managers; models; plantations; temporal variation; tree damage; tree trunk; trees; Japan
Abstract:
... Bark stripping by Asiatic black bears (Ursus thibetanus) has a serious impact on conifer plantations in Japan, resulting in physical damage to the tree trunks and reduction of the value of the timber. The aim of this study was to clarify whether these plantations are more prone to damage by bears at particular times and sites, to more effectively prevent this damaging behavior. The study was condu ...
DOI:
10.1016/j.foreco.2016.08.042

12. The effect of strip thinning on tree transpiration in a Japanese cypress (Chamaecyparis obtusa Endl.) plantation

Author:
Sun, Xinchao; Onda, Yuichi; Otsuki, Kyoichi; Kato, Hiroaki; Hirata, Akiko; Gomi, Takashi
Source:
Agricultural and forest meteorology 2014 v.197 pp. 123-135
ISSN:
0168-1923
Subject:
Chamaecyparis obtusa; basins; canopy; growing season; models; photosynthesis; plantations; sap flow; stems; transpiration; trees; vapor pressure; xylem; Japan
Abstract:
... This study analyzes the effect of strip thinning on tree transpiration (Et) in a dense and mature Japanese cypress (Chamaecyparis obtusa Endl.) plantation in central Japan. Strip thinning, which removed 50% of stems, was conducted in a headwater basin in October 2011. Xylem sap flow densities (Fd) were measured using thermal dissipation (Granier-type) sensors in a 156-m2 plot before and after thin ...
DOI:
10.1016/j.agrformet.2014.06.011

13. Tree-ring study of a Late Holocene forest buried in the Ubuka Basin, southwestern Japan

Author:
Hakozaki, Masataka; Kimura, Katsuhiko; Tsuji, Seiichiro; Suzuki, Mitsuo
ISSN:
0928-1541
Subject:
Chamaecyparis obtusa; Cryptomeria japonica; Holocene epoch; Torreya nucifera; basins; dendrochronology; forests; growth rings; models; nutmeg; radiocarbon dating; trees; wood; Japan
Abstract:
... Buried trees in the Ubuka Basin, southwestern Japan, were investigated to identify the wood species and to build tree-ring chronologies. A total of 65 trees were collected belonging to three species: Japanese cedar (Cryptomeria japonica, 63 trees), Japanese nutmeg tree (Torreya nucifera, one tree) and Hinoki cypress (Chamaecyparis obtusa, one tree). Crossdating of the individual ring-width series ...
DOI:
10.1163/22941932-90000094

14. Tree Size Dependence of Litter Production, and Above-ground Net Production in a Young Hinoki (Chamaecyparis obtusa) stand

Author:
Adu-Bredu, Stephen; Yokota, Taketo; Ogawa, Kazuharu; Hagihara, Akio
Source:
Journal of forest research 1997 v.2 no.1 pp. 31-37
ISSN:
1610-7403
Subject:
Chamaecyparis obtusa; aboveground biomass; biomass production; forests; insects; leaf mass; leaves; models; plant litter; regression analysis; research; seedlings; tree mortality; trees
Abstract:
... The study was carried out in a 9-year-old hinoki cypress (Chamaecyparis obtusa (Sieb. et Zucc.) Endl.), stand over a span of three years from July 1992 to June 1995, primarily to predict litter production from exteral tree dimensions by combining open-top clothtrap and clipping methods. Litter production was virtually concentrated in October and November. Stem cross-sectional area at the crown bas ...
DOI:
10.1007/BF02348260