衡阳盆地紫色土丘陵坡地植被恢复模式建设

The vegetation restoration mode construction in sloping-land with purple soilsin Hengyang basin

以衡阳盆地紫色土丘陵坡地为例,通过总结前人的研究成果和采集湖南农业大学生态研究所紫色土生态实验站部分收集整理的资料和实验数据,系统分析了衡阳盆地紫色土丘陵坡地退化生态系统的主要特征:干旱缺水、水热矛盾突出;水土流失严重;人为破坏频繁;植物群落破坏容易,恢复难。在此基础上,从全局性、紧迫性、高效性、层次性、可持续性、创新性与多样性的角度提出在衡阳盆地紫色土丘陵坡地的上坡、中坡与下坡其植被恢复建设分别采用3种典型模式,即:灌草模式、乔灌草模式和经济林果与绿肥牧草模式,以期促进该区域的生态、经济与社会的全面协调与可持续发展。

This paper took sloping-land with purple soils in Hengyang basin as example,by summarizing the achievements of previous studies and collecting information and experimental data from Ecological Experimental Station of purple soil in Ecological Research Institute of Hunan Agricultural University,and systemically analyzed the main features of degenerative ecosystems of sloping-land with purple soils in Hengyang basin.The results included that the drought and water shortage,outstanding contradictory of water and heat,serious loss of water and soil,frequently destroy by human,and the plant communities were easy to be ruined and difficult to be resumed.Based on this,this paper put forwards three typical models to vegetation restoration construction in up-slope,mid-slope and down-slope of sloping-land with purple soils in Hengyang basin from views of overall situation,urgency,efficiency,hierarchy,duration,innovation and diversity.These three models were shrub-grass mode,arbor-shrub-grass mode and fruit bushes-green manure crops mode,it was expected to promote the all-round,continually and harmonious development of ecology,economy and society in studied area.