Genetic Variation and Tree Improvement of Konishii fir (Cunninghamia lanceolata(Lamb.) Hook. var.konishii) in Taiwan

Abstract

HÜHN, M. (1979): Beiträge zur Erfassung der phänotypi, respectively. At this age, family accounted for 9, 12, and 11% of the total variance in height, DBH and volume, respectively. Also at age 21, individual tree heritability was 0.35, 0.49, and 0.45 for height, DBH and volume, respectively, and family heritability was 0.53, 0.69, and 0.66 for the three respective characteristics. The age trend for all genetic parameters was more stable for DBH than for height and volume. Family (backward) selection for DBH at age 21 resulted in a 9.6 % gain and indirectly 5.1 and 21.0 % gains for height and volume, respectively, compared to 5.2 and 20.1% gains for height and volume, respectively, when selection for these characteristics is done directly. DBH is an effective proxy trait for selection in growth. DBH is also less susceptible than height to typhoon damage, which frequently afflicts tree plantations in Taiwan. Therefore, DBH should be considered as the primary trait for selection for Konishii fir in Taiwan. Konishii fir is a genetically variable species despite its limited geographic range, and is fast growing which makes it a viable candidate species for tree improvement. Genetic Variation and

ASPECTOS DENDROMÉTRICOS E SILVICULTURAIS DE UM POVOAMENTO DE Cunninghamia lanceolata NO SUL DO BRASIL

“…Segundo Sun et al (2011), o auto-desbaste inicia quando a relação entre o comprimento de copa viva e a altura total de árvores de C. O crescimento em diâmetro de C. lanceolata na sua região de origem é inferior ao observado no presente estudo. Valores entre 10,8 e 20,2 cm aos 16-25 anos são relatados (HUI; VONGADOW, 1997;XIANGQING et al, 2002;CHUNG et al, 2011;SUN et al, 2012). O mesmo pode-se afirmar para a altura.…”

“…O mesmo pode-se afirmar para a altura. Como consequência, o volume individual total das árvores aos 21 anos de idade, 0,461 m 3 no sul do Brasil, é, no mínimo, o dobro do observado naquela região (CHUNG et al, 2011).…”

Application of Models to Predict Stand Volume, Aboveground Biomass Accumulation, and Carbon Storage Capacity for a Konishii Fir (Cunninghamia konishii Hayata) Plantation in Central Taiwan

“…This result indicates that the importance of plantation in current forest management is increasing, because it can provide various ecosystem services and play an important role in ecological, economic, and social aspects [2][3][4][5]. In recent years, numerous studies have assessed various species of plantations and discovered that they possess high carbon storage (CST) capacity due to their fast growth [6][7][8][9][10]. Thus, establishing plantations for carbon sequestration is regarded as a valid method to reduce global warming worldwide.…”

“…Cunninghamia lanceolata var. Konishii or C. konishii is known as Konishii fir, was first discovered in Luanta mountain of central Taiwan and is also known as Luanta fir [8,27]. Generally, it is dealt with as a variety of China fir; however, this conifer is classified into a single species as well (hereafter use Konishii fir in this study).…”

“…The natural habitat of this conifer is narrow, and it is naturally found in Taiwan and the border between Vietnam and the Lao People's Democratic Republic [27]. In Taiwan, it is mainly distributed in the central part between the latitude 23 • 30 and 24 • 30 at an elevation range from 1300-2800 m [8,32]. It is commonly found scattered within forests of Chamaecyparis spp.…”