研究论文
段昌群,王焕校,何湘藩.重金属复合污染对蚕豆性状影响的模糊聚类与性状代间分化的摄动分析[J].环境科学学报,1996,16(4):450-460
重金属复合污染对蚕豆性状影响的模糊聚类与性状代间分化的摄动分析
- FUZZ CLUSTERING TO THE EFFECTS OF HEAVY METALS ON THE QUANTITATIVE CHARACTERS OF BROADOBEAN IN FOUR GENERATIONS AND THEIR PERTURBATION ANALYSIS
- 基金项目：国家自然科学基金,云南省应用基础研究基金
- 作者
- 单位
- 段昌群
- 云南大学生物系,昆明 650091
- 王焕校
- 云南大学生物系,昆明 650091
- 何湘藩
- 云南大学软件学与系统工程中心
- 摘要：运用正交设计,经过4代的原位种植实验,获得了Pb2+、Cd2+、Hg2+、Zn2+复合污染对同一蚕豆(ViciafabaL.)种质在株高、首次开花时间、每株结豆荚数、单位豆荚豆粒数(每20个豆荚)、种子的重量(50粒)等数量性状的表型数据。利用模糊聚类和摄动分析方法,获得了25种污染组合对蚕豆数量性状影响的聚类特征,考察了蚕豆代间分化的趋向。实验结果表明,重金属复会污染对蚕豆的毒害作用,不仅同元素的种类和各自的浓度有关,而且与金属离子相互之间的浓度比例密切相关;对于连续种植的蚕豆,其对金属污染的性状变化因世代条件不同而有差异,Pb2+、Cd2+、Hg2+污染条件下,随着代数的推移,性状逐步向正常条件下的数值方向恢复,而Zn2+仅在第二代时表现出毒害。本文还讨论了利用植物反应衡量污染物的毒性问题。
- Abstract：With the original designing method, parameters of quantitative characters(PQCs) of several variety of Broadbean(vicia faba L.) contaminated with Pb, Cd, Hg, and Zn in four generations were investigated. The parameters are the percentage of survival seedling (PSS),height of plants (HP), the relative time of firstly blooming (TFB), podsper seedling(PPS),amounts of bean every 20 ponds(BEP) and weight of 50 bean (WB). Differentiation trends of broadbean was outlined by fuzz cluster and perturbation treads of broadbean was outlined by fuzz cluster and perturbation analysis. The results showed that the toxical effects of heavy metals are determined not only by the sorts of combined metal ions and their doses, but also by the relative concentration among different metalions. With the proceeding of generation, the PQCs recovered to the direction of normal situations under the lead,cadmium and mercury,but under high dose zinc treatment, the toxical response appeared in the second generation. The comparability of pollution tolerance in plan and its measure were also discussed. It was suggested that geographically historic background and the adaptive characteristics of plant should be concerned so that a correct ecological evaluation could be harvested in the environmental ecological impact evaluations.
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