交换量

土壤阳离子交换量（CEC）及交换性Ca、Mg也都表现出相同的变化趋势。

The cation exchange capacity ( CEC ), exchangeable Ca and exchangeable Mg had the same trend .

主要结果如下：（1）种植年限对茶园土壤pH、阳离子交换量、有机C、全N、全P含量的影响均达到显著水平（P0.05）。

The main results are as follows . ( 1 ) The pH value , caption exchange capacity , organic C , total N and total P content ( P0.05 ) in tea garden were significantly affected by planting years .

首先对20项土壤理化特征在计算机上进行Fuzzy聚类筛选，确定粘粒交换量、阳离子交换量等12项有代表性的土壤指标为分类指标。

20 physics and chemical items of the soil characteristic are clustered and selected by the method of Fuzzy clustering analysis and computer .

黄土高原小流域土壤pH、阳离子交换量和有机质分布特征

Distribution characteristics of soil pH , CEC and organic matter in a small watershed of the Loess Plateau

特种树脂对Ga交换量的测定

Determination on Exchange Amount of Special Resin to Gallium

基于涡度相关技术估算植被/大气间净CO2交换量中的不确定性

Uncertainties in long-term studies of net ecosystem co_2 exchange with the atmosphere based on eddy covariance technique on quantity

K2C2O4-KCl法快速测定石灰性紫色土壤阳离子交换量

Determination of cation exchange capacity in calcareous purple soil with the k_2c_2o_4-kcl double-quick exchange method

黑钙土中>0.25mm粒级的水稳性团聚体百分含量增加，阳离子交换量提高，土壤pH值下降。

The percentage content and cation exchange amount of aggregate stability of chernozem ( > 0 . 25 mm ) increased , but the pH decreased .

施用有机肥的土壤全氮、全磷、重组磷及C/N比均呈提高趋势，pH值降低，其原土和重组复合体的阳离子交换量较高。

The contents of total nitrogen , total phosphorus , content of exchangeable cation ( CEC ) and C / N specific ratio were all improved .

实验结果表明，改良后的土壤比表面积、电荷量、阳离子交换量随共聚物在土壤中施入量的增加而增大，土壤的酸性减弱，pH提高。

The experimental results showed that specific surface area , the charge amount and the cation exchange capacity of the soil increased with dose of the copolymers in the soil .

元过程热交换量dQ及循环效率问题

On quantity on the heat transfer DQ concerning element of process and cycle efficiency

施用不锈钢尾渣能显著提高土壤和淋溶液pH值、有机质及土壤总团聚体；而对土壤阳离子交换量作用不显著。

Adding stainless steel tail slag can significantly improve the pH value of soil and leaching solution , organic matter and soil aggregates ; but soil CEC did not increase significantly .

pH下降值与Cu2+吸附量和Al溶出量呈显著正相关，并且Al交换量与非专性吸附量呈极显著正相关。

The amounts of adsorbed Cu2 + and the dissolution of aluminum were significantly correlated with the decrease of the pH. Al exchange capacities were significantly correlated and non-specific adsorption capacity .

不同化学改良剂均能不同程度的提高土壤渗透率，增加田间持水量，降低土壤pH值，减少土壤全盐量，增加阳离子交换量，降低碱化度等。

Different chemical improvers were able to increase soil permeability and soil field capacity , reduce soil pH , reduce soil total salt content , increase CEC , reduce ESP in different extent .

CEC与有机质丰度指标阳离子交换量与孔隙度之间存在正相关关系；原始有机质丰度的恢复及其意义

Between CEC and richness indicator of source rock ; THE RECOVERY OF ORIGINAL ABUNDANCE OF ORGANIC MATTER AND ITS SIGNIFICANCE

阳离子交换量的增加也能够在一定程度上加快Cd、Pb稳定化的进程，而粘粒含量对稳定化速率影响较小。

To some extent , the increasing of CEC also could quickened the stabilization process of Cd and Pb , but the clay content had little effect on the stabilization velocity .

基于IRGA通量箱法的草坪夏季晴天CO2净交换量日动态

Diurnal Dynamics of Lawn Ecosystem CO_2 Net Exchange Based on IRGA Flux Chamber Method in Clear Summer Days

我国净生态系统碳交换量（NEE）的时空变化特征研究

Study on the Spatial-temporal Change Characteristics of Net Ecosystem Exchange ( NEE ) in China

结果表明，黑碳阳离子交换量为0.15cmol·kg-1，远低于矿物和腐植酸。

The CEC of BC was 0.15 cmol · kg-1 and much lower than those of clay minerals and humic acids .

其影响因素主要有成土母质、粘土矿物组成、土壤阳离子交换量、pH值、有机质含量、碱解氮含量和土壤溶液中铵离子浓度等。

The soil factors affecting the capacity of fixing-ammonium in tested soils were mainly parent material , soil clay composition , pH , CEC , organic matter , available N and concentration of NH4 + in soil .

在邮政通信网部分指出，根据质量指标与交换量是否相关而分别采用p（cs）选控图与p控制图进行控制。本文并提出p（cs）选控图的第一个实例。

And in the postal network , we need to use the pcs cause selecting control chart or p control chart to control the quality indices according as they are correlated to the quantity of exchange or not .

人类活动不仅加大了CO2在大气圈、海洋和陆地生态系统之间的交换量，也加剧了河流的直接碳输运，加速了陆地的碳流失。

Human activities not only strengthen the exchange quantity of CO2 between atmosphere 、 sea and earth ecosystem , but also the river transport carbon directly and the run off of land carbon .

研究表明，烃源岩的阳离子交换量CEC与电动电位ξ之间有正相关关系；

It has been shown that there are normal correlations between cation exchange capacity ( CEC ) and electro-kinetic potential (ξ) of source rock ;

本文研究了鄂西天宝山、武当山、星斗山等山地土壤胶体的阳离子交换量（CEC）与其固相组成的关系。

The cation exchange capacity of mountain soil colloid in western area of Hubei province and its relation to solid phase components were studied .

结果表明：不同土属耕层土壤中Ca、Mg交换量有较大差别，交换性Ca/Mg的比值主要受母质等成土因素的影响；

The results showed that exchangeable capacity of Ca and Mg in cultivated soil varied significantly in different genera , and the ratios of Ca / Mg in topsoil were mainly influenced by parent materials and other soil formation factors .

表层土壤（0～20cm）容重大，孔隙度小，阳离子交换量低；

Surface soil ( 0 ~ 20 cm ) had a high bulk density , low porosity , and low CEC .

土壤水溶性氟与土壤pH和粘粒含量呈负相关，与土壤有机质含量呈正相关，但与阳离子交换量无相关性。

The content of soil water soluble F was related to the soil property . It depended on soil pH , the content of clay , and the soil organic materials significantly . It had no remarkable relativity with soil cation exchange capacity .

相关分析说明，土壤阳离子交换量（CEC）及粘粒含量是影响吸附平衡时间、吸附平衡量的重要因素；

Correlation analysis indicated that soil cation exchange capacity ( CEC ) and clay content were important factors that affected the time and the capacity of K + equilibrium adsorption ;

测定了WQD－1沸石在一价碱金属离子混合溶液中的分配系数、饱和交换量和在25℃时，NH＋4／K＋、NH＋4／Na＋交换等温线。

The distribution coefficient in alkali solution and saturated ion exchange capacity of zeolite W QD 1 are measured and NH + 4 / K + , NH + 4 / Na + exchange isotherms are determined .

阳离子交换量（CEC）由19.3cmol/kg下降为17.8cmol/kg。

CEC decreases from 19.3cmol/kg to 17.8cmol/kg .