摘要
以开发利用程度较高的浙江德清排溪冲小流域为研究范例 ,采用网格化样框取样的调查方法和 GIS技术 ,研究了南方丘陵区小流域生态系统的杂草生物多样性的分布格局。结果表明小流域内杂草多样性呈现明显的空间分布特征。稻田杂草多样性最低 ,坡地次之 ,稻田与坡地的交错带杂草物种最丰富。坡地中开发利用程度高的茶园和竹园杂草多样性较高 。
Paixichong watershed,a developed watershed in Deqing County,Zhejiang Province,was selected as a case to study the distribution characteristics of weed species richness in a watershed ecosystem in southern China's hilly area by using grid sampling method and combining GIS(Geographic Information System) technology.The results show that different land use patterns have a great impact on weed species composition and species richness distribution.The ecotone of paddy field and sloping land has the largest number of weed species and the highest species richness,while the paddy field has the lowest.Tea plantation and bamboo field,developed for a long time,have a higher weed species diversity,comparing with the newly developed orchard and upland field in the sloping land.
出处
《生态学报》
CAS
CSCD
北大核心
2002年第3期440-443,共4页
Acta Ecologica Sinica
基金
国家自然科学基金资助项目 ( 39870 1 4 9
30 0 30 0 30 )
