scholarly journals Aboveground Biomass Allometric Models for Evergreen Broad-Leaved Forest Damaged by a Serious Ice Storm in Southern China

Forests ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 320
Author(s):  
Houben Zhao ◽  
Zhaojia Li ◽  
Guangyi Zhou ◽  
Zhijun Qiu ◽  
Zhongmin Wu

A catastrophic ice storm occurred in the spring of 2008, which severely destroyed nearly 13% of China’s forests; among them, the broad-leaved forest suffered the most extensive damage. In this study, allometric models of the evergreen broad-leaved forests damaged at different recovery stages after the disaster were established to estimate the aboveground biomass of damaged trees. Plant plots were established and surveyed in damaged forests to determine species composition and diameter distribution, and finally a sample scheme was formulated that contained 47 trees from 13 species. The destructive measurements of aboveground biomass of trees selected according to the scheme were conducted in 2008, 2010, 2012 and 2016, respectively. Undamaged trees in the same region were also selected to measure the biomass in 2010. Linear regression of logarithmic transformation of the power function form was performed using Diameter at Breast Height (DBH) as predictor to develop biomass allometric models. The results showed that the ice storm caused tree aboveground biomass loss, which caused different parameters of the tree biomass models at different recovery stages. The models have a high accuracy in predicting trunk and total aboveground biomass, with high determination coefficients (R2, 0.913~0.984, mean 0.957), and have a relatively low accuracy in predicting the biomass of branches and leaves (R2, 0.703~0.892, mean 0.784). The aboveground biomass reduced by 35.0% on average due to the ice storm, and recovered to the same level of undamaged trees in the same diameter 8 years after the disturbance. The branches and leaves recovered very fast, and the biomass of these parts exceeded that of the undamaged trees, reaching the same diameter 2 years after the disaster, indicating an over compensatory growth. The trees with a smaller diameter were mostly composed of middle and late succession species, and recovered faster than other species, indicating that the ice storm may alter the forest structure and accelerate community succession. The biomass allometric models built in this study, combined with forest inventory data, can estimate forest biomass loss and recovery after disturbance, and offer an important sense of the assessment of forest damage and the formulation of forest post-disaster management strategies.

2012 ◽  
Vol 2012 ◽  
pp. 1-7
Author(s):  
Fang Zhang ◽  
Guangyi Zhou ◽  
Motoshi Hiratsuka ◽  
Kazuo Tanaka ◽  
Yasushi Morikawa

This study focuses on the influence of the 2008 ice storm in China and subsequent forest rehabilitation dynamics up until 2011. All seven plots studied exhibited significant damage, with the total number of damaged trees varying between 63 and 92%. In addition, most trees suffered stem bending in 2008 and the extent of damage varied with tree diameter at breast high (DBH). Relationships between loss of biomass as dead trees and stand characteristics were analyzed by multiple stepwise regression. The results showed that the decrease in biomass (Y) could be related to altitude (X1), slope (X2), and aboveground biomass (AGB) in 2008 (X5) according to the following formula:Y=−0.02456X1+0.2815X5−1.480X2+51.23. After 2 to 3 years, tree numbers had declined in all seven plots. The mean increase in AGB (4.9 t ha−1) for six of the plots was less than the biomass loss as dead trees (9.4 t ha−1) over the 3 year periods. This corresponds to a release of CO2to the atmosphere for each plot. Therefore, the forests of Lechang in the Nanling Montains have probably acted as a carbon source to the atmosphere for a short period after the 2008 ice storm.


2012 ◽  
Vol 39 ◽  
pp. 87-93 ◽  
Author(s):  
Yanjun Du ◽  
Xiangcheng Mi ◽  
Xiaojuan Liu ◽  
Keping Ma

PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e48244 ◽  
Author(s):  
Dunmei Lin ◽  
Jiangshan Lai ◽  
Helene C. Muller-Landau ◽  
Xiangcheng Mi ◽  
Keping Ma

Tropics ◽  
2002 ◽  
Vol 11 (2) ◽  
pp. 101-108 ◽  
Author(s):  
Yasunori NAKAGAWA ◽  
Changhua LI ◽  
Goro IWATSUBO

2015 ◽  
Vol 23 (5) ◽  
pp. 610-618 ◽  
Author(s):  
Yi Jin ◽  
◽  
Jianhua Chen ◽  
Xiangcheng Mi ◽  
Haibao Ren ◽  
...  

2001 ◽  
Vol 7 (1) ◽  
pp. 34 ◽  
Author(s):  
Wen Yao Liu ◽  
John E. D. Fox ◽  
Zai Fu Xu

Middle-mountain, moist, evergreen broad-leaved forest is an important forest type of Yunnan Province, SW China. Species composition, vegetation structure, physiognomy, diversity and phenology of this forest in Ailao Mountain were surveyed. The forest has characteristics common to subtropical, evergreen broad-leaved forest elsewhere in China. It also has local features associated with the middle-mountain location at lower latitude and higher altitude, including relatively high humidity and mild temperatures all year. The forest is dominated by species unique to Yunnan. There is a well-developed bamboo layer, fewer megaphanerophytes, more microphylls, more lianas and more epiphytes than in other subtropical evergreen broad-leaved forests. Floristically, elements of tropical, temperate and endemic flora comprise 54, 43 and 3% of the genera, while tropical, temperate and endemics account for 22, 38 and 40% of the species in the forest. Two-thirds of the trees and shrubs have leaves with drip tips in varying degree. The phenological rhythm of the forest is similar to that of a tropical forest, with plants flowering and bearing fruits almost throughout the year. Species diversity is richer than that of other evergreen broad-leaved forests in central Yunnan. Some management strategies and priorities for this forest are suggested.


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