进展演替

放牧干扰是灌木层与草本层物种丰富度与均匀度较低及灌丛难以实现进展演替的主要原因。

The low species richness and evenness , and restricted progressive succession were mainly determined by grazing .

对Ⅰ、Ⅱ带及Ⅲ1亚带的植被宜采取保护性经营对策，对Ⅲ2、Ⅲ3亚带，采取恢复和提高其生物多样性，促进植被进展演替的经营对策。

The protective management strategy should be adopted for ⅰ,ⅱ and ⅲ 1 zones . For ⅲ 2 and ⅲ 3 subzones , the management strategy should be to restore and increase biodiversity , and to promote progressive succession .

土壤有效水含量在两个土层中的变化均随着植被的进展演替呈现增加的趋势。

The soil water available capacity was raised with evolving successions of vegetation .

滨湖沙地植物群落进展演替与种类调查研究

Plant Community Proceeding Succession and Species Investigation Research in the Lakeside Sandy Area

浙江楠群落存在的这种竞争替代现象，表明群落尚处于进展演替阶段。

Such competition and substitution phenomenon indicate that the P.chekiangensis community is on the way of succession .

根据植被群落结构和进展演替趋势分析，天然次生林的生态功能最好，人工混交林和灌丛次之，荒草丛最差；

It was proven by the succession tendency of the vegetation community structure that the eco-function of the natural secondary forest was the best , followed by artificial mixed forest and the wild grassland .

植被自然恢复是从根本上防止生物入侵、保障生态系统安全、促进生态系统进展演替的有效途径之一，也是国际社会普遍认同的主要发展趋势。

Spontaneous recovery of vegetation is one of the effective approach , which can prevent biological invasion and guarantees ecological system security and promotes ecosystem progressive succession radically , and it is the widely supposed by international communities as major development tendency too .