摘要
在广泛收集杉木物候观测资料的基础上，对我国杉木物候期地理变化规律进行了综合分析，并寻求生产力与生长期的相关关系。主要结果：揭示了杉木物侯期的地理分布规律，并建立了杉木主要物候期地理空间分布的数学模型。指出杉木生长期长度与生产力呈二次曲线关系，主梢生长期在２００－２５０天时（中带，生产力较高，为８—１８ｔ／ｈａ·ａ：主梢生长期高于２５０天（南带）或低于２００天（北带），生产力较低，为３—８ｔ／ｈａ·ａ。这是杉木的生态遗传性和产区的环境条件综合影响的结果。
Based on the extensive data collection of phenology of Chinesefir(Cunninghamia lanceolata Hook.), geographical variation of phenological phases in Chinese fir was analysed and it was found that there was a correlation between the productivity, and growing period. The main results were asfollow: (1) the indication of geographical variation of phenological phases of Chinese fir, and the establishment of mathematical models of mainphenological phases patterns of geographical variation of Chinese fir.(2)demonstration that there was a square curve correlation between length of growong period and productivity, when the length of growing period was in anarrange of 200 to 250 days (mid-zone), the productivity was higher, resching 8-18 t/ha.a; while the length was more than 250 (in south-zone) or less than 200 days(in north-zone), the productivity was lower,only 3-8 t/ha.a.These rgsults were effected synthetically by eco-genetic characteristics of Chinese fir and the environmental conditions.
出处
《林业科学》
CAS
CSCD
北大核心
1994年第4期313-319,共7页
Scientia Silvae Sinicae
基金
国家自然科学基金
中国林业科学研究院基金
关键词
物候期
地理分布
生产力
杉木
Phenological phase, Geographical variation, Mathematical model, Productivity, Cunninghamoa lanceolata, China
