次生福建青冈林组成数量特征及林分生产力

A Study on the Quantitative Characteristic of the Composition andProductivity of the Secondary Cyclobalanopsis chungii Stand

对次生福建青冈林的组成数量特征及生产力进行研究。结果表明，江西次生福建青冈林乔木层优势种重要值福建青冈为６３０４，木荷为３９９２，石栎为３２６８；乔木层树种多样性ＳｈａｎｎｏｎＷｉｅｎｅｒ指数为２３～４２，群落均匀度为６２％～８７％，生态优势度为００８～０３３；灌木层ＳｈａｎｎｏｎＷｉｅｎｅｒ指数为３６～４４，群落均匀度为９２％～９７％；草本层ＳｈａｎｎｏｎＷｉｅｎｅｒ多样性指数为０４～１４，群落均匀度为４１％～８６％；林分蓄积生长量为２８４～４３０ｍ３／ｈｍ２．ａ。

The quantitative characteristic of the composition and productivity of the Secondary Cyclobalanopsis chungii stand were discussed in this paper.The result showed that the dominant species' importance value of Cyclobalanopsis chungii,Schima superba,Lithocarpus glaber were 63.04,39.92,32.68 respectively;in tree layer,the diversity ShannonWiener index was from 2.3 to 4.2,the community evenness was from 62% to 87%,the dominance was in the range between 0.08 and 0.33;in the shrub layer,the diversity ShannonWiener index was in the range from 3.6 to 4.4,the community evenness was from 92% to 97 %;in the herb layer,the ShannonWiener index was 0.4 to 1.4,the community evenness was from 41% to 86%;the annual average volume increment of stand was from 2.84 to 4.30m3/hm2.