南京地区森林植被性质的初步研究

本文报道了南京地区的木本植物区系，森林植被类型及其动态，分析了南京地区的土壤、气候条件。结果表明，落叶阔叶林是南京地区相对稳定的森林植被类型。

A PRELIMINARY STUDY ON THE NATURE OF THE FOREST IN NANJING

The woody flora. forest types and dynamics as well as the climate and soil characteristics in Nanking were synthesized. The 282 woody species. belo- nging to 143 genera and 53 families. were recorde. among which there wereonly 5 evergreen broad- leaved trees and 1 1 evergreen broad- leavcd shrubs. The forest could be classified into 9 formations. i.e.,Form. Liquidambar for- mosana. Form. guercus variabilis Form. Q.fabri. Form. Q. acutissima. Form. Q. d- albergia. Form. Robinia pscudoacacia. Form. Pteroceltis tatarinowii. Form. Pinusmassoniana and Form. Pinus thunbergii.The analysis of the vegetation dynam- ic showed that the forest in Lin- Guo- Shi(Temple of the spirit Valley) devc- loned toward the Liquidambar jormosana- Quercus jabri- Q. variabilis forest;the jorest. in Qixia Mountain. toward the L. lormasana-Q. variabilis Tilia fo- rest. while the forest in Lanva Mountain. toward the Pteroceltis- Zelkova-plat-ycarya- Acer- paliurus forest. It is much more colder in Winter in Nanking than in Hanzhong and A- nkang. the northernmost distribution area of the evergreen and deciduous bro-AD-leaved mixed forest.The low temperature in Winter could be the main factor limiting the growth of the evergreen broad-leaved trees in Nanjing. The present zonal vegetation in Nanjing should belong to the deciduous broad- leaved forest.