ancient weathering soil

The relationship between pH values in the precipitation and rates of soil weathering, and causes of such differences were studied.

对我国西南酸雨较严重的四川重庆、贵州贵阳两地的典型森林进行了野外调查和采样,并在湖南会同、陕西周至和河北兴隆进行对比考察,对五个典型地区的土壤进行了风化模拟实验研究,探索降水pH和土壤风化速率之间的关系以及不同地区土壤风化速率之间的区别和原因。

0; whereas in the tWo weakly developed paleosol layers (L1-2, L1-4 ), a single Peak of alkanes is evident (the maximum at C31) with high CPI (5-6) a.

弱古土壤化层（L1-2，L1-4）正构烷烃前组峰几乎没有，CPI为5-6，支链烷烃及烯烃含量相对最低，表明该层形成于湿冷气候。

As a paleo climatic proxy index, magnetic susceptibility parameter, which has been widely used in the loess studies of northern China, is applied in the studies on quaternary aeolian dust deposition paleosol sequence located in the south of the lower reaches of the Yangtze River.

将北方黄土研究中广泛应用的磁化率参数引入江南第四纪风尘堆积区研究，对安徽宣城风尘堆积－古土壤序列向阳剖面进行了系统的磁化率化采样、测试，根据该剖面磁化率及其曲线的变化特征，对其古气候指示意义进行了初步的探讨。

Gray relation model was applied to analyze the main factors of soil erosion and desertification in Fengning county of Hebei Province.

人类活动强度增大和气候的变化是影响农牧交错带东南边缘农业发展的因素之一 ,本文应用灰色关联模型 ,对农牧交错带河北坝上丰宁县土壤风蚀沙化因素进行了分析 :发现影响土壤风蚀沙化的主要因素是人口增长率和冬季 1月平均气温 ,其次是耕地、草地面积的变化和夏秋 8、9月的降水量。

WEATHERING DEGREE OF PURPLE SOIL AND "TITANIUM VALUE"

紫色土壤风化发育程度与“钛值”关系的研究

There the soil is from weathered limestone soil or loess.

那里的土壤是经过风化作用的石灰石土壤或黄土。

COMPARISON OF THE PHYSICAL-CHEMICAL CHARACTERISTICS OF AEOLIAN SOILS IN THE TAKLAMAKAN DESERT AND THE GURBANTONGGUTE DESERT

新疆两大沙漠风沙土土壤理化特性对比分析

Comparing of Physic and Chemical Property of Aeolian Sandy Soil Before and After Improvement

泥炭和腐泥改良风沙土前后土壤理化性质比较

Rock that has been ground down by the elements becomes soil.

由于风吹雨打日晒而崩裂的岩石化成了土壤。

Holocene aeolian loess and pedogenic environmental change in the upper-reaches of the Huaihe River;

淮河上游全新世风成黄土与成壤环境变化研究

Effects of Weathered Coal on Soil Properties in Open-Cast Mine Area

风化煤施用对露天煤矿区复垦土壤性质的影响

Orthogonal Experiment for Remediating Diesel Contaminated Soil by Enhancing Bioventing

强化生物通风修复柴油污染土壤的正交实验

Effects of Weathered Coal to the Availableness State of Heavy Metals Cadmium and Plumbum in the Alkaline Soil

风化煤对碱性土壤中重金属镉、铅有效态的影响

Variation of microbial community and enzyme activity in rhizospheric soil of Saposhnicovia divaricata (Turz) Schisck

防风根际微生物区系和土壤酶活性的变化研究

Risk Evaluation of Coal Ash from Power Plant Used As Alkaline Soil Amendment

电厂粉煤灰作为碱化土壤改良剂的风险分析

Soil polarization under pure stands of planted forests in the semi-arid,windblown sand region of northern Shaanxi Province,northwestern China.

陕北半干旱风沙区人工纯林土壤性质极化研究

Distributions of Mercury in Original and Weathered Coal Mine Spoils in Panxian,Guizhou Province

贵州盘县煤矸石及其风化土壤中汞的分布特征

Study on the Pollution Risk and Adsorption Mechanism of PCBs in Soils;

PCBs土壤污染风险及土壤吸附机制研究

Wind& rain had denuded the mountain side of soil.

风雨侵蚀了山坡的土壤。

Changes in the Trace Element Content of Soil in the Desert Region of Northern Loess Plateau;

黄土高原北部风沙区土壤中微量元素的含量变化研究

identification of podzols and podzolised soils

鉴定灰壤土和灰化土

Effects of Leaf Extracts of Zanthoxylum Bungeanum and Soil Extracts on Soil Microbes, Enzyme Activities and Chemical Property;

花椒叶和土壤浸提液对土壤微生物、土壤酶及土壤化学性质的影响