摘要
通过分析湖北省宜昌县樟村坪磷矿废弃地植被的组成、空间结构、各成分综合优势比及其群集度的变化以及植物分布与环境因子的相关性等问题 ,探讨了该地植被恢复过程中植物群落形成与演替的一般规律。结果表明 ,废弃地 6种演替植物群落的形成是先锋植物种类入侵、定居、群聚和竞争的结果 ,在植物群落形成与演替的过程中 ,各种类成分的种群数量及综合优势比呈动态变化 ,废弃地植物群落形成与演替的过程按演替序列可分为 3个阶段。植物群落形成与演替还与环境因子有关 ,废弃地高浓度的土壤速效磷是影响植物生长与分布的胁迫因子。伴随着群落的形成与演替 。
The phosphate mining wasteland in Zhangcunping,Hubei Province,China,is consisted of stripped mining topsoil and abandoned mining stone,which is stabilized by a tail mine dam.The wasteland sampled by the authors is located in a valley which just like many other phosphate mining wastelands in this mountain area.As a serious damaged ecosystem,the wasteland often recover slowly and produce an impacting on environment.No active remedy has been conducted on the phosphate mining wasteland in Zhangcunping.In order to assess the vegetation restoration on this kind of wasteland and put forward suggestions for environmental protection in this area,the authors took the field inverstigations on the wastelands in 1997 and 1999.Vegetation sampling was conducted along seven transects run from the center of a typical mining wasteland site.Herbaceous vegetation was sampled in lm×1m quadrates and shrubs and vines were sampled in 5m×5m quadrates. The natural formation of plant community on mining wasteland usually goes through seeds spread,establishment,colonization,and species competition.There are many facts affecting the re vegetating progress,such as pioneer species,soil character,and slop directiong and degree,which result in different restoration progress on mining wasteland.The authors sort them into primary restoration succession serials.Some slopes rehabilitate slowly,the composition and structure of community are very simple at the experimental sites;on the other hand,some slopes do fast,and their community composition and structure are complex.According to the data collected in 1997,after five year primary natural restoration,six plant communities are composed from fortyeight species occurred in 129 plots,which belong to 23 families,including 5 graminoid,30 forb,4 vine,7 shrub,and 2 tree species.The authors divided these communities into three primary succession stages during the restoration progress,the mono dominant species community,the subdominant species community,and the co dominant species community accordi
出处
《生态学报》
CAS
CSCD
北大核心
2001年第8期1347-1353,共7页
Acta Ecologica Sinica
基金
湖北省教委科研基金资助项目 (三峡地区废弃地植被恢复与重建的研究 )
关键词
植物群落演替
物种多样性
磷矿废弃地
樟村坪
plant community
succession
species diversity
phosphate mining wasteland
Zhangcunping
