@Article{taiwania20034816,
AUTHOR = {Chi-Cheng Liao, Chang-Hung Chou and Jiunn-Tzong Wu},
TITLE = {Population Structure and Substrates of Taiwan Yellow False Cypress (Chamaecyparis obtusa var. formosana) in Yuanyang Lake Nature Reserve and Nearby Szumakuszu, Taiwan},
JOURNAL = {Taiwania},
VOLUME = {48},
YEAR = {2003},
ISSUE = {1},
PAGES = {6-21},
URL = {https://taiwania.ntu.edu.tw/abstract/428},
ABSTRACT = {Chamaecyparis obtusa Sieb. & Zucc. var. formosana (Hayata) Rehder (Taiwan yellow
false cypress) is one of the most important sources of timber in Taiwan. For sustainable use of this species, basic information about its regeneration under natural conditions is required, but this has been few until now. In this paper, the composition, population structure, growing substrates, and recruitment of Taiwan yellow false cypress were studied in Yuanyang Lake Nature Researve (YYL) and nearby Szumakuszu (SMKS) area, Taiwan. Two study sites in YYL were selected for comparison: one near a lakeshore (LS) and another at a mountain ridge top (MR). A site also was studied at SMKS, located 2 km west of the lake. Within each site, all woody plants with basal diameters larger than 1 cm, and population structures were recorded and analyzed in order to elucidate the recruitment pattern of Taiwan yellow false cypress. It was documented that floristic composition and canopy structure differed among the sites. An inverse J-shaped size distribution pattern for plants growing on down logs at the LS and MR sites suggests a stable and continuous recruitment of Taiwan yellow false cypress at both YYL locations. In contrast, the Taiwan yellow false cypress at SMKS had a discontinuous size distribution, independent of inhabited substrate type. For regeneration of Taiwan yellow false cypress in SMKS, a large-scale disturbance, instead of single uprooted trees, may be necessary. The results indicate that down log is important substrate for regeneration of Taiwan yellow false cypress, particularly in forests at the YYL, LS and MR. Based on the findings in YYL, some down logs are suggested to leave in clear cutting plantation, because they might provide suitable space for regeneration of Taiwan yellow false cypress. This suggestion is expected to reduce the cost and work frequency of management.},
DOI = {10.6165/tai.2003.48(1).6}
}