珠三角地区稻田周边杂草的群落分析

 对珠三角地区的中山、东莞、珠海和广州市的稻田周边杂草群落进行研究，调查群落的多样性和均匀度。结果显示，珠三角地区稻 田周边生境共有杂草25科，57种；中山稻田周边杂草多样性最低，均匀度最高，广州稻田周边杂草的多样性最高，但均匀度最低； 各地之间的群落结构存在显著差异。研究表明，稻田周边杂草群落多样性受工业化和农业集约化的影响；工业化和农业集约化程度 高，杂草群落多样性越低。

An Analysis on Weed Communities around Rice Fields of Pearl River Delta

We investigated the diversity and evenness of weed community around rice fields in Zhong shan,Dongguan,Zhuhai and Guangzhou,the four cities in Pearl River Delta.The results show that there are 57 weed species which belong to 25 families in the weed habitats around the rice fields of Pearl River Delta. The biodiversity and evenness of weed community in Zhongshan are the lowest; however, the biodiversity of weed community in Guangzhou is the highest. The community structures are statistically different among the four cities. It is indicated that the community structure and biodiversity of weed community depend on the strength of industrialization and agricultural intensification. The higher level of industrialization and agricultural intensification will result in a lower weed biodiversity.