Article
Environmental Sciences
Bingrui Jia, Hongru Sun, Herman Henry Shugart, Zhenzhu Xu, Peng Zhang, Guangsheng Zhou
Summary: Climate change impacts tree growth in the Chinese boreal forest, with the dominant tree species Larix gmelinii showing sensitivity to temperature and precipitation. Different age classes of trees have varying responses to these climatic factors, with optimal temperature and precipitation ranges identified for maximal growth increments. Increasing temperatures and precipitation in the future are estimated to potentially enhance the growth potentials of trees in the Chinese boreal forest region.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Forestry
Qigang Xu, Xiangdong Lei, Hao Zang, Weisheng Zeng
Summary: The height-diameter relationship of trees is crucial for forest investigation and estimating carbon storage. This study examined how climate change affects this relationship in larch plantations in northern and northeastern China. By analyzing measurement data from national forest inventories, climate-sensitive height-diameter models were developed and used to assess the relationship under different climate change scenarios. The results showed that climate change had varying effects on different tree species and sizes, with larger trees being more sensitive to climate change.
Article
Forestry
Hisanori Harayama, Ikutaro Tsuyama, Mitsutoshi Kitao, Takeshi Yamada, Naoyuki Furuya, Hajime Utsugi, Shozo Sasaki
Summary: Research shows that the initial height and root collar diameter of Japanese larch seedlings have a significant impact on their height after planting, while the age of the seedling and planting area become more important over time. Furthermore, there were no differences in seedling height between the different types of seedlings (bareroot and container-grown) during the four growing seasons after planting.
Article
Forestry
Milorad Danilovic, Ranko Saric, Vladimir Cirovic, Vladimir Pudja
Summary: This study investigated the effect of pruning on tree development and wood assortments in the poplar clone 'I-214'. The results showed that pruning did not significantly impact tree growth, but significantly improved the quality and economic value of wood assortments.
IFOREST-BIOGEOSCIENCES AND FORESTRY
(2022)
Article
Ecology
I. M. Olom, Z. W. Wei
Summary: This study investigated the effect of 3-Indole Acetic Acid (IAA) and Gibberellic acid (GA3) on the growth of alfalfa BC3 hybrid. The results showed that the use of IAA and GA3 significantly improved the growth and yield of the hybrid.
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
(2023)
Article
Forestry
Sayaka Tanaka, Satoshi Ito, Ryoko Hirata, Kiwamu Yamagishi, Takuro Mizokuchi, Hiromi Yamagawa, Haruto Nomiya
Summary: The study examined the effectiveness of partial leaf removal in alleviating transplant shock and reducing stem tilting in large-rooted cuttings of sugi trees. The results showed that leaf removal at 25% reduced water stress in the early stage but this advantage disappeared after three months. Higher leaf removal rates resulted in larger stem incline values initially but this effect also diminished after three months. Leaf removal had limited effects on transplant shock and stem tilting, and higher leaf removal rates delayed stem growth and diameter due to the loss of photosynthetic organs.
Article
Plant Sciences
Xue Wu, Xin-Jun Zheng, Xiao-Han Mu, Yan Li
Summary: The study observed different growth characteristics of Haloxylon ammodendron and H. persicum in various terrains of the Gurbantunggut Desert, with a focus on their basal diameter and canopy radius allometric relationships with plant height. The two species exhibited distinct strategies in allocating resources to plant height and basal diameter in response to different terrains, suggesting a trade-off mechanism in adapting to habitat heterogeneity.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Horticulture
Maria J. Palma, Jorge B. Retamales, Eric J. Hanson, Carlos M. Araya
Summary: Blueberry fruit yield is positively correlated with cane diameter. Understanding the relationship between cane age, cane diameter, and vegetative and reproductive expressions of the plant is crucial for optimizing field management. Trials conducted in Chile and the USA showed that cane diameter and age were strongly associated with various vegetative and reproductive traits in blueberry plants. These findings provide valuable information for estimating yield and defining pruning practices in adult blueberries.
SCIENTIA HORTICULTURAE
(2023)
Article
Forestry
Peter Annighoefer, Martina Mund, Dominik Seidel, Christian Ammer, Aitor Ameztegui, Philippe Balandier, Ieva Bebre, Lluis Coll, Catherine Collet, Tobias Hamm, Franka Huth, Heike Schneider, Christian Kuehne, Magnus Loef, Any Mary Petritan, Ion Catalin Petritan, Schall Peter, Bauhus Juergen
Summary: Roots serve as the interface between trees and soil, playing a key role in water absorption, nutrient uptake, and contributing to forest primary production. Analysis of 19 European datasets revealed that tree sapling dimensions are crucial estimators for root biomass, with an increasing share of belowground biomass with size.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Forestry
Jouni Siipilehto, Sakari Sarkkola, Yrjo Nuutinen, Lauri Mehtatalo
Summary: Rotation forestry has been the main management practice in Finland, but the existing models are mainly applicable to even-aged stands. With the increasing demand for continuous cover forestry, there is a need for models that can be applied to uneven-aged stands. However, the new height-dbh models have shown less accurate performance compared to the existing models for even-aged stands.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Forestry
Courtney L. Giebink, R. Justin DeRose, Mark Castle, John D. Shaw, Margaret E. K. Evans
Summary: Forest management has the potential to contribute to greenhouse gas reduction through carbon sequestration and storage. However, current forest growth models lack consideration of the direct impact of climate change on tree growth. This study developed alternative models that incorporate climate effects, which can provide more accurate predictions of forest response to climate change.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Ecology
Jie Yang, Nathan G. Swenson
Summary: Forest tree communities are shaped by interactions between phenotypes and environments. Functional traits provide insights into plant tradeoffs. The relationships between tree crown-stem diameter and tree height-stem diameter are coordinated with functional trait tradeoff axes. Interspecific variation in tree architecture is driven by variation in allometric intercepts rather than slopes.
ECOLOGY AND EVOLUTION
(2023)
Article
Forestry
Longfei Xie, Faris Rafi Almay Widagdo, Zheng Miao, Lihu Dong, Fengri Li
Summary: In this study, height-diameter (H-D) models were developed for Larix olgensis A. Henry in northeastern China. The best performing model used the Chapman-Richards function with three predictors. Nonlinear mixed-effects (NLME) models and nonlinear quantile regressions (NQR) were further used to improve the H-D model and provide accurate height predictions. Calibration of the predictions using height measurements from subsamples also increased predictive accuracy.
CANADIAN JOURNAL OF FOREST RESEARCH
(2022)
Article
Forestry
Yuanfa Li, Shaoming Ye, Yinghua Luo, Sufang Yu, Gongqiao Zhang
Summary: Based on the study of 14 permanent plots in sub-tropical forests of southwest China, it was found that there is a close relationship between tree diameter and species diversity, potentially independent of habitat. Therefore, measuring the diameter of some trees can provide information about species diversity and contribute to the investigation and assessment of biodiversity.
JOURNAL OF FORESTRY RESEARCH
(2023)
Article
Forestry
Sarkhosh Karamzadeh, Mehrdad Nikooy, Kambiz Taheri Abkenari, Farzam Tavankar, Angela Lo Monaco, Rodolfo Picchio
Summary: Selection cutting has significant effects on stand structure and tree growth form, leading to simplification of stand structure, changes in tree growth form, and increased risk of snow and wind damage for young trees.