1) index of Hakanson's ecological harm
生态危害指数
2) potential ecological risk index
潜在生态危害指数
1.
Based on the principle of sedimentology and environmental behavior of heavy metals, the index of geoaccumulation and potential ecological risk index were used to evaluate heavy metals pollution in sediments of Huangpu River, Shanghai.
采用地积累指数法和潜在生态危害指数法对黄浦江沉积物中的重金属进行了评价研究,解释了两种评价方法结果存在差异的原因。
2.
Methods of indexes of geo-accumulation,potential ecological risk index,and biological effects of concentration are applied to evaluate the eco-environmental quality of sediments in the Changjiang estuary and its adjacent waters which are divided into 7 zones by Cluster analysis in consideration of hydrodynamic process and deposition process and salinity impact.
采用地质累积指数法、潜在生态危害指数法和生物效应浓度法3种方法,考虑河口的水动力过程、沉积物分布和盐度影响,把长江口及毗邻海域划分为7个区域进行沉积物生态环境质量评价。
3.
Then, based on the national secondary standard for soil environmental quality and measured data, farmland heavy metal pollution in Kaifeng Irrigation area were evaluated by using Nemerow and potential ecological risk index method.
通过分析污水灌溉在农业生产中的利弊及我国土壤的污染现状,运用内梅罗指数法及潜在生态危害指数法,分别参照国家土壤环境质量二级标准和土壤背景值对开封市污灌区土壤重金属污染状况进行了评价。
3) potential ecological risk index(RI)
潜在生态危害指数(RI)
4) damage index
危害指数
1.
The maxims of damage rate and damage index were caused by Stephantitis svenson,and the second by white vein disease.
其中,长脊冠网蝽对滇润楠的危害率及危害指数最高,白脉病次之。
5) Hazard index
危害指数
1.
For noncarcinogenic risk,hazard index is calculated in the base of two exposure pathways including food inta.
对于非致癌效应,计算通过食物摄入和空气吸入2种暴露途径产生的危害指数。
2.
The carcinogenic and non-carcinogenic risks 214 wells groundwater 11 pollutants of 5 District are calculated and the pollutants hazard index are calculated too.
(2)以大连市区为例,整理分析大连市214口地下水井水中毒害污染物含量,对主要污染物进行毒性分析,定量分析污染物的摄入量,计算大连市X区、S区、Z区、G区和L区五个区214口地下井水中11项致癌性和非致癌性污染物饮食途径的致癌风险和非致癌风险,并计算了11项污染物的危害指数。
6) ecological hazard
生态危害
1.
The potential ecological hazard suggested by Hakanson was used to assess ecological hazards of heavy metals in urban soils.
文章采用了单因子及内梅罗综合污染指数法,对泰安市城市道路两侧土壤重金属污染现状进行了调查评价,并采用Hakanson提出的潜在生态危害指数法对土壤中重金属的潜在生态危害进行了评价。
2.
Specificity of heavy metals pollution in index urban soil of Changchun city was studied for the potential ecological hazards.
以长春市区土壤为对象,研究土壤中重金属污染的特征,并采用Hakanson提出的潜在生态危害指数法对土壤中重金属的潜在生态危害进行了评价。
3.
[Objective] To study the distribution of the heavy metal contamination in roadside soil and the potential ecological hazards.
[目的]研究公路旁土壤中重金属污染的分布及潜在生态危害。
补充资料：迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中，}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100，如某一地区的值越大，反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂，则: }艺材。一芝Mj、}EIM汀艺。+乏M，(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二，么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中，M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I，j为迁移偏好指数。通过计算迁移偏好指数，可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如，专业技术人员的人数所占比重，各种文化程度人数所占比重等，以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中，M为迁移人数;M，为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条