生物积累

所测中草药药用部分的Se元素含量明显高于土壤中的含量，表明中草药对土壤中的Se元素有生物积累作用。

The content of Se in Chinese traditional herbs are higher than that of in soils , which means that biological accumulation exists in the transfer of Se from soil to Chinese traditional herbs .

各元素在土壤剖面中分布状况与元素特性、母质，地形、气候以及地质淋溶和生物积累强弱有关。

The distribution of element in soil profile was related to the characteristics of elements , soil parent , topography , climate and intensity of geological leaching and biological accumulation .

城市污染河道沉积物中AVS与Cr的生物积累研究

Acid Volatile Sulfide and Bioaccumulation of Cr in Sediments from a Municipal Polluted River

2,4,6-三氯苯酚（TCP）等氯酚类有机污染物常见于水体和土壤中，并且具有较高毒性，易生物积累，难以生物降解。

2,4,6-Trichlorophenol ( TCP ), with high toxicity , easy bioaccumulation and poor biodegradation , is frequently detected in water and landfill .

多效唑生物积累因子（BCF）和鱼体类脂质含量之间有较高的正相关性。

The bioconcentration factor ( BCF ) of MET was also in positive correlation to the lipid content of the fish .

二嗯英类多氯联苯（DL-PCBs）具有高毒性、持久性、长距离传输性和生物积累性的特点，严重威胁着人类健康。

Dioxin-like polychlorinated biphenyls ( DL-PCBs ), with the characteristics of high toxicity , persistence , long-distance transmission and bioaccumulation , are serious threat to human health .

联合了土壤理化性质、金属形态及生物积累和毒性效应的t-BLM，将提供一个环境风险评价和制定土壤质量标准的新工具。

The t-BLM which combined the soil physicochemical property , metal speciation and organisms bioaccumulation / toxicity response , might provide a new tool to develop the more rational soil quality criteria and risk assessment of heavy metals .

氯氰菊酯通过食物链在鲤鱼肾脏和小肠中的生物积累效应

Bioaccumulation of Cypermethrin in Kidney and Intestine of Carp Through Food Chain

水环境中重金属的生物积累研究及应用

Study on Bio-accumulation of Heavy Metals in Water Environment

杂草对重金属的生物积累特性的研究

Study on the Bioaccumulation Character of Weeds for Heavy Metals in Polluted Soil

鲤鱼对硝基苯的生物积累、消除与代谢研究

Bioconcentration , elimination and metabolism of nitrobenzene in Carps

蚯蚓生物积累表征土壤中芘的生物有效性研究

Prediction of Pyrene Bioavailability in Soil by Earthworm ( Eisenia Foetida ) Bioaccumulation

内蒙古羊草草原均腐土营养元素的生物积累

Bioaccumulation of Different Nutritive Elements of Leymus chinesis Steppe in Isohumisol Soil Inner Mongolia

不同镉积累类型小麦根际土壤低分子量有机酸与镉的生物积累

Low-molecular-weight organic acids in rhizosphere soil and their effect on cadmium accumulation in two cultivars of wheat

利用生物积累的特性，为重金属污染的防治及生物监测提供参考。

It can be a reference for heavy metal pollution control and biological monitoring in water environment .

然而，越来越多的事实表明，长氟碳链化合物存在环境和生物积累或毒性。

However , there are increasing evidences for bioaccumulation and / or toxicity of compounds containing the long perfluoroalkyl chains .

植物要长成大树需要支持能力、水分供给能力和生物积累量。

The biological amassing capacity from the big crown makes it possible for the spinulose tree fern to grow into a big tree .

对千烟洲试验区人工林的植物和土壤中15种营养元素的含量、分布和生物积累特征进行了研究。

Characteristics of concentration , distribution and bio accumulation of15 nutrient elements in plants and soils of artificial forests in experimental plots of Qianyanzhou were studied .

许多环境荷尔蒙物质同时也是持久性有机污染物，具有生物积累效应、能抵抗生物降解、可在环境中从源区进行远距离搬运并对人类健康及环境有害的化学物质。

Many environmental hormones are also the persistent organic pollutants that can be transported long-range from source areas , enriched by organisms , and are resistant against biodegradation .

由于农药和氟苯衍生物具有生物积累性、致癌性、环境持续性及对人体健康的潜在危害性，所以它们成为全球关注的有机污染物。

Because of pesticides and fluorobenzene derivatives with bioaccumulation , carcinogenicity , environmental sustainability and the potential harm to human health , they become global concern of organic pollutants .

全氟化合物是一类工业化合物，具有广泛存在性、难降解性、生物积累性的特点，对食品安全、人类健康和生存环境造成影响。

Perfluorinated compounds , as a group of industrial chemicals , which have three features , widespread existence in environment , hard degradation and biological accumulation , have affected human health and environmental safty .

而后，在每种类型内部再按土壤分布的环境条件、植物根系支撑与舒展条件，土壤养分储量及供应强度，以及常年平均生物积累量等项目所存在的差异划分成不同级差。

Then , each type is divided into different grades according to the environmental variation of soil distribution , the soil physical properties for root growth , and the content and supply of nutrients .

两者均为生产生活中不可缺少的化学品，但因两者在环境中具有持久性，生物积累性和生态毒性，而被世界各国限制或者禁止使用，两者替代品也应运而生。

Both of them are indispensable in daily life . Many countries in the world have limited and prohibited the usage of them because PFOS and PBDEs have persistence , biological accumulation and ecotoxicity .

其退化成因是桉树人工林生态系统本身的脆弱性、水土流失严重、人为因素对生物积累过程的干扰、桉树全树利用方式、耕垦的不适当以及林地养分收支严重失衡。

The causes include the vulnerability of the eucalyptus plantation ecosystems , severe soil and water loss , anthropogenic disturbance to bioaccumulation process , whole-tree utilization way , unsuitable reclamation , and serious imbalance in forest nutrient budget .

氯作为地下水中的宏量组分普遍存在于地下水中，其不形成难溶矿物，不被粘土矿物所吸附且不能被生物积累，可以在水中自由的迁移。

Chlorine as a main component in groundwater is hard to form soluble minerals which is also hardly adsorbed by the clay mineral and accumulated by creatures . Because of this features , chlorine can transport free in groundwater .

研究内容主要包括土壤生物积累及相关养分状况、盐基淋溶作用和微生物数量等方面的坡向性分异，并探讨其对山地土壤资源开发利用和生态环境建设的意义。

The research content included the slope-directive variation of soil bio-accumulations properties and related nutrient status , base cation leaching , the quantity of microorganism etc. , and discussed the meaning of the exploitation of the soil resources and the construction of the eco-environment .

低浓度Cd、Pb促进毛状根生物量积累，高浓度则抑制积累。

Low density of Cd or Pb promotes the accumulation of biomass in hairy roots of B. pilosa but high density restrains .

综合分析表明，干旱胁迫引起麻疯树幼苗水分亏缺，降低了光合效率和养分吸收效率，从而抑制了麻疯树幼苗的生长、生物量积累及C、N和P的积累。

Drought stress caused water deficiency of J. curcas seedlings , decreased photosynthetic and nutrient uptake efficiency , therefore inhibited the growth , biomass accumulation , C , N and P accumulation of seedlings .

在中度干旱胁迫下，增强的UV-B辐射提高了金荞麦根生物量积累和配置、茎生物量积累。

In conditions of moderate drought stress , enhanced UV-B radiation increased biomass accumulation to root , biomass accumulation to stem and biomass accumulation to root .

冷蒿VOCs可不同程度的降低种子发芽势、发芽率与发芽指数；抑制幼苗芽与根生长；阻碍侧根（须根）产生；抑制生物量积累与分配。

The germination energy , germination rate and germination index were reduced differently ; buds and roots growth , fibres ( lateral roots ) development , total biomass and biomass allocation were inhibited by VOCs from A. frigida .