Some Impacts of Egret Colonies on the Heronry Soils Nutrition and Heavy Metal level [PDF]
, 2009 对厦门白鹭自然保护区鸡屿岛上的鹭类集群营巢地的表层土壤进行测定，比较繁殖前营巢地、繁殖后的营巢地及非营巢地土壤当中的营养元素全氮(N)、全磷(P)、全钾(K)的含量，以及重金属元素铜(Cu)、锌(Zn)、铬(Cr)、镉(Cd)的含量.土壤样品用微波消化法消化，土壤氮用凯氏定氮法测定，土壤磷用钼蓝比色法测定，土壤钾、铜、锌、镉、铬用原子吸收法测定。实验测得，繁殖前营巢地土壤全氮百分含量为0.038±0.006；全磷百分含量为0.086±0.015；全钾百分含量为1.049±0.048 ...
李伟
core
Application of effective rainfall in assessing water damage risk to highways in Liaoning Province [PDF]
This paper utilizes data on the records of damage to expressways and main roads caused by precipitation in Liaoning Province from 2017 to 2021. It analyzes the temporal and spatial characteristics of damage accidents, calculates the effective rainfall ...
Jianing LI +6 more
core +1 more source
[Progress in preparation of plant biomass-derived biochar and application in pesticide residues field]. [PDF]
Se Pu, 2022 Zhang X, Zhen D, Liu F, Peng Q, Wang Z.
europepmc +1 more source
Effects of Tillage Disturbance on Slope Shape and Micro-topographic Features on Typical Sloping Cropland of Southwestern Alpine-canyon Area [PDF]
[Objective] The objective of this study was to investigate the effects of various tillage practices on on slope shape and micro-topographic features on typical sloping croplands of southwestern alpine-canyon area.
LIU Jingyi +8 more
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[Determination of trace perfluorinated compounds in environmental water samples by dispersive solid- phase extraction-high performance liquid chromatography-tandem mass spectrometry using carbon nanotube composite materials]. [PDF]
Se Pu, 2023 Song XL +6 more
europepmc +1 more source
Research on Single-drum Music Culture of Wang's family in Dalian in Social Changing [PDF]
, 2010 纵观国内单鼓著述，颇为丰富。而在大多数的研究中，单鼓均作为传统烧香的法器、伴奏的乐器而存在，鲜有论及脱离宗教信仰、民俗仪式，以“旧瓶装新酒”形式存在的单鼓艺术及其功能变迁的相关研究；关于单鼓音乐对象主体的研究，也少有学者关注；理论研究方法也相对单一。由此笔者在多次田野考察的基础上，确定了一个在社会变迁背景下，以家族传承为视角，论述单鼓音乐文化的论题。 本文从家族传承的角度，以实地调查为主，辅以文献资料，历时和共时相结合，对单鼓艺术进行对比性研究。从历时的角度，围绕体制变革、生态环境改变、生产生活方式变化，
刘诗文
core
Investigation of taxonomic shrub resources in Qiqihar and analysis of their economic potentiality [PDF]
[Objective] The study aims to find out the shrub resource situation and its economic potentiality in Qiqihar, and provide basis for the development and utilization of shrub resources in this area.
CUI Lin +5 more
core +1 more source
[Determination of thiram in wheat flour and flour improvers by high performance liquid chromatography-diode array detection]. [PDF]
Se Pu, 2021 Wang X, Zhou S, Li X, Zhang Q.
europepmc +1 more source
Analysis of soil cushion buffering characteristic for rockfall impact force through discrete element numerical simulation [PDF]
Rock sheds is one of the main engineering solutions for mitigating rockfall disaster in the mountainous regions of western China. Typically, the roof of a rock shed is covered with a soil cushion composed of sand or gravel.
Fabin YAN +6 more
core +1 more source
Shuitu Baochi Xuebao, 2006 长期地膜覆盖对土壤许多理化性质产生较大影响，但对无机氮和氮素矿化率的影响却鲜有报道。本文重点研究沈阳农业大学棕壤定位实验站（1987年开始）内长期地膜覆盖及不同施肥处理下土壤无机氮和氮素矿化率在整个生长季内的变化情况。结果表明，长期的地膜覆盖可以增加NO2^--N的积累，并抑制NO3^--N的迁移，但对NH4^＋—N的含量则影响不大；而且覆膜促进了土壤有机氮索的矿化，从而加速了NH4^＋-N和NO3^--N的释放进释．研究结果同时表明有机肥与无机肥配合施用比单一施用有机肥更能促进土壤的N素矿化。
汪景宽, 刘顺国, 李双异
doaj +2 more sources