STUDY ON THE METHOD OF CONSTRUCTING VARIABLE-DENSITY YIELD TABLE

来源 :林业研究:英文版 | 被引量 : 0次 | 上传用户:dswwldsw
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Growth of stand average DBH is discussed bassed on relationship between standgrowth and stand density.Growth equation of stand average DBH is fitted with data of 65 plotsand 130 stem analyses of site index 18 meter of old-growth Larch(Larix gmeliniiRupr.)
其他文献
If some suitable treatments are used plantations can be grown and established on thesoil of soda-saline-alkali with the soil condition of PH 8.5—9.6,salinity 0
目的:探讨肥料对黄芩生长发育、生理指标及黄芩苷的影响。方法:采用氮磷钾三因素五水平的D-最优饱和设计,用盆栽法测量黄芩的生长、生理指标及黄芩苷含量。结果:黄芩各项生长、及
By means of calorimetry measurement,the caloric values of various components,the standing crop of energy,not energy production and energy conversing efficiency
Following the 19th International Congress on Entomology from June 26 to Juy 4,1992 in Beijing,the 4th IUFRO Cone and Seed Insect Congress was held from July 5 t
To understand the natural regeneration of manchurian ash and the seed banks undervarious secondary stands,we have investigated the seed quantity and vitality of
he coupled heat and moisture transfer in a freezing process of wood particle mate-rial was mathematically modeled in the paper.The models were Interactively sol
In the present study,described that preparation of oligoesterified wood fibre by theaddition reaction of the wood fibre with maleic anhydride(MA)and allyl glyci
Site quality of larch(Larix gmelinii Rupr.)in Da Xingan Mountain in InnerMongolia was studied systematically with about 1000 temporary plots and computersoftwar
Coordination of the aenal servey,the author carried ground census on the popula-tion size of Red-erowned crane(Grus japonensis)in Khanka Lakes District from 198
以《新疆图志·古迹志》为语料,从句法角度对《新疆图志·古迹志》中的方位词进行定量定性分析,归纳出《新疆图志·古迹志》方位词共24个,分别是"东、西、南、北