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Variation of Zn content in soils under different land-use types in the Hetao oasis,Inner Mongolia of China

Journal of Arid Land 2016年第6期8卷 861-870页

作者： zhu yangchun ZHAO Xueyong LIAN Jie CHEN Min Naiman Desertification Research Station/Urat Desert-grassland Research Station Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences

Understanding the status and distribution of the micronutrient Zn in soils is important for managing plant growth and preventing soil pollution for agricultural irrigation systems in arid and semi-arid regions. In this study, a total of 195 soil samples from five soil layers （0-20, 20-40, 40-60, 60-80 and 80-100 cm） in the three land-use types （wasteland, forestland and cropland） after long-term agricultural fertilization and irrigation with Yellow River water were collected in the middle of the Hetao oasis, i.e. the Yongji irrigation sub-oasis. We analyzed the vertical and spatial distributions of Zn content and its relationship with soil properties to determine whether differences of Zn content existed in the soil profiles. The results revealed that the mean content of Zn was 107 mg/kg, 1.9 times higher than the background value （55.7 mg/kg） of the Hetao oasis and much lower than the secondary standard value （300 mg/kg） of the Chinese Environmental Quality Standard for Soils when pH〉7.5. Soil Zn contents were not significantly different and the coefficients of variation of Zn contents were less than 50% in the five soil layers. Soil Zn content was similar from southern to northern parts but increased from western to eastern parts in the sub-oasis. Soil Zn contents did not differ significantly among the three land-use types, but soil total nitrogen （TN） contents were significantly higher in the agriculturally managed forestland and cropland than in the wasteland （P〈0.05）. Zn was significantly and positively correlated with TN （F=36.6, P〈0.001）. The use of fertilizers may increase the content of Zn in soils, but flooding irrigation may minimize the differences in the spatial distribution of soil Zn content in the whole sub-oasis. This research is of important value for soil pollution control and sustainable land use management in arid and semi-arid regions.

关键词： fertilizer land-use type spatial distribution soil profile soil property

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Accumulation and potential sources of heavy metals in soils of the Hetao area,Inner Mongolia,China

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Pedosphere 2020年第2期30卷 244-252页

作者： yangchun zhu Lijin WANG Xueyong ZHAO Jie LIAN Zhenhua ZHANG Ecology Institute Lishui UniversityLishui 323000China Institute of Agricultural Resource and Environmental Sciences Jiangsu Academy of Agricultural SciencesNanjing 210014China Northwest Institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhou 730000China

Soil contamination by heavy metals is a problem in agricultural irrigation *** assess the accumulation and sources of heavy metals in the Yongji irrigation district of the Hetao area,Inner Mongolia,China,195 soil samples from 39 sites(0–100 cm)were collected,and Zn,Cu,Pb,Cr,and Cd concentrations were *** mean concentrations were 107.17,32.48,12.31,53.53,and 0.22 mg kg-1,respectively,with no significant differences between soil depths(P>0.05).Concentrations of Zn,Cu,and Cd were higher than the background levels,with moderate accumulation;the contamination factor(CF)values were 1.9,1.7,and 1.9,respectively,and the geoaccumulation index(Igeo)was>*** of Pb and Cr were lower than,or close to,the background levels(CF<1,Igeo<0),indicating that they originated from a natural *** monomial potential ecological risk index(Eri)for Zn,Cu,Pb,and Cr was low;Eri for Cd was 55.73,implying a moderate *** grade of potential ecological risk index of the five heavy metals(RI)was low,declining from south to *** studied soils were contaminated with Zn,Cu,and Cd;principal component(PC)analysis implicated the enrichment of Cd and partial Cu(high loading in PC 2)was related to agricultural activities;Zn and partial Cu,closely associated with PC 3,may have originated from irrigation water from the Yellow *** agricultural development should focus on fertilizer and pesticide application and the quality of irrigation water.

关键词： agricultural activity contamination factor geoaccumulation index potential ecological risk principal component analysis soil layer spatial distribution

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Floral traits and pollination system of Zygophyllum xanthoxylum in the managed and wild populations in an arid region of Northwest China

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Journal of Arid Land 2015年第4期7卷 488-500页

作者： CHEN Min ZHAO Xueyong ZUO Xiao'an LIAN Jie zhu yangchun Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences

Zygophyllum xanthoxylum, which belongs to Sarcozygium of Zygophyllaceae, is one of the ecologically important species in Northwest China. In order to understand the pollination system of Z. xanthoxylum, we investigated the following characteristics of this species in the Urat Desert-grassland Research Station in western Inner Mongolia of China： flowering dynamics, pollen viability, pollen limitation, floral visitors and breeding system. The results showed that the flowering period and flowering peak were different between the wild and managed popula- tions, being longer in the managed population. Z. xanthoxylum was pollen-limited, and pollen limitation was more intense in the wild population than in the managed population. Chalicodoma deserticola （Hymenoptera） was found to be the most frequent pollinator in the wild population, while Anthophora fulvitarsis （Hymenoptera） was the most frequent and effective visitor in the managed population. Out-crossing was dominant in the breeding system and self-pollination just played an assistant role to assure the reproduction of Z. xanthoxylum.

关键词： Zygophyllum xanthoxylum pollination pollen limitation floral visitor fruit set seed set breeding system

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Artificial root exudates and soil organic carbon mineralization in a degraded sandy grassland in northern China

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Journal of Arid Land 2014年第4期6卷 423-431页

作者： YongQing LUO XueYong ZHAO Olof ANDRéN yangchun zhu WenDa HUANG Naiman Desertification and Farmland Research Station of the Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences University of Chinese Academy of Sciences Bjorklundavagen 3

Plant root exudates contain various organic and inorganic components that include glucose, citric and oxalic acid. These components affect rhizosphere microbial and microfaunal activities, but the mechanisms are not fully known. Studies concerned from degraded grassland ecosystems with low soil carbon（C） contents are rare, in spite of the global distribution of grasslands in need of restoration. All these have a high potential for carbon sequestration, with a reduced carbon content due to overutilization. An exudate component that rapidly decomposes will increase soil respiration and CO2 emission, while a component that reduces decomposition of native soil carbon can reduce CO2 emission and actually help sequestering carbon in soil. Therefore, to investigate root exudate effects on rhizosphere activity, citric acid, glucose and oxalic acid（0.6 g C/kg dry soil） were added to soils from three biotopes（grassland, fixed dune and mobile dune） located in Naiman, Horqin Sandy Land, Inner Mongolia, China） and subjected to a 24-day incubation experiment together with a control. The soils were also analyzed for general soil properties. The results show that total respiration without exudate addition was highest in grassland soil, intermediate in fixed dune and lowest in mobile dune soil. However, the proportion of native soil carbon mineralized was highest in mobile dune soil, reflecting the low C/N ratio found there. The exudate effects on CO2-C emissions and other variables differed somewhat between biotopes, but total respiration（including that from the added substrates） was significantly increased in all combinations compared with the control, except for oxalic acid addition to mobile dune soil, which reduced CO2-C emissions from native soil carbon. A small but statistically significant increase in pH by the exudate additions in grassland and fixed dune soil was observed, but there was a major decrease from acid additions to mobile dune soil. In contrast, electrical condu

关键词： artificial root exudates carbon mineralization pH variation deteriorated grassland ecosystem Inner Mongolia

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Characteristics of high arsenic groundwater in Hetao Basin,Inner Mongolia,northern China

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Research in Cold and Arid Regions 2015年第1期7卷 104-110页

作者： yangchun zhu XueYong Zhao Min Chen YongQing Luo Xin Zhou Naiman Desertification Research Station Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences

It is well known that the Hetao Basin is one of the most seriously arsenic-affected groundwater areas in China. In order to understand the characteristics of high arsenic （As） groundwater in the Basin, a brief overview of arsenic in groundwater follows. High arsenic in the Basin commonly occurs in shallow groundwater and the total arsenic concentrations range from 0.58 to 572 μg/L （average 99.73 μg/L）, exceeding the maximum mandated value of 10 μg/L for drinking water in China; As（III） is the predominant species. The regional distribution pattern of arsenic in the groundwater increases from south/southeast to north/northwest. Hangjinhouqi and Wuyuan counties are considered as the most seriously affected areas, with high incidences of endemic arsenicosie diseases in the Hetao Basin. High groundwater arsenic correlates with the increase of well depth. Previous studies proposed that groundwater arsenic in the Basin is mainly originated from desorption of some natural solid materials in the sediments, under reducing condition. Generally, reducing condition is believed to be the primary factor for arsenic releasing from the sediment to groundwater in the region. Under inorganic Or bacterial processes, Fe2O3 changes to FeS and arsenic adsorbed to Fe（OH）3 dissolves into groundwater, and As（V） is re- duced to As（W）. Besides, reducing environments, groundwater hydraulic gradients, organic matter, pH, evapotranspiration, and soil texture are presumed to be the predominant factors that control arsenic mobilization.

关键词： spatial distributions source reducing condition influencing factor

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院前急救中的常见问题及防范

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现代医院 2010年第1期10卷 113-114页

作者：朱阳春扬中市人民医院江苏扬中212200

目的探讨基层急救中心院前急救过程中存在的问题及防范措施。方法对县市级急救中心院前急救中暴露出的问题进行总结。结果院前急救的全过程都不同程度地存在安全隐患。结论全社会高度重视,全员参与,全程培训,规范行为与操作不失为现阶... 详细信息

目的探讨基层急救中心院前急救过程中存在的问题及防范措施。方法对县市级急救中心院前急救中暴露出的问题进行总结。结果院前急救的全过程都不同程度地存在安全隐患。结论全社会高度重视,全员参与,全程培训,规范行为与操作不失为现阶段加强院前急救工作的权宜之策。

关键词：基层医院急救中心院前急救隐患防范对策

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皮肤基底细胞癌、鳞状细胞癌及脂溢性角化病临床和超声特点

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中国医学影像技术 2023年第11期39卷 1698-1701页

作者：朱阳春陈文崔立刚孙洋付帅北京大学第三医院超声医学科北京100191

目的观察皮肤基底细胞癌(BCC)、鳞状细胞癌(SCC)及脂溢性角化病(SK)的临床和超声特征。方法回顾性分析68例BCC(69处病变)、44例SCC(44处病变)和27例SK(28处病变)患者资料,观察其临床及超声特征。结果 BCC组及SCC组位于曝光部位病变占... 详细信息

目的观察皮肤基底细胞癌(BCC)、鳞状细胞癌(SCC)及脂溢性角化病(SK)的临床和超声特征。方法回顾性分析68例BCC(69处病变)、44例SCC(44处病变)和27例SK(28处病变)患者资料,观察其临床及超声特征。结果 BCC组及SCC组位于曝光部位病变占比高于SK组(P均<0.017)。3组病变最大径、累及深度、累及皮肤层次、病变形态、多发点状高回声、病变基底部边界、后方回声、血流信号及淋巴结转移差异均有统计学意义(P均<0.05);SCC组病变最大径和累及深度均大于BCC组和SK组(P均<0.017);SK组形态规则病变占比大于SCC组(P<0.017);仅BCC组病变表现为多发点状高回声(P均<0.017);SCC组淋巴结转移发生率高于BCC组(P<0.017);SK组病变多仅累及表皮,且基底部边界多清晰,而BCC组和SCC组病变多浸润至真皮层或皮下组织(P均<0.017),且与BCC组相比,SCC组更易侵犯皮下组织(P<0.017);SK组病变多无血流信号或仅有少量血流信号,而BCC组多为中等血流信号、SCC组多为丰富血流信号(P均<0.017)。结论皮肤SK可发生于全身多部位,仅累及皮肤表皮层,病变基底光滑,与真皮层分界清晰,内未见或仅见少量血流信号。BCC和SCC好发于头面部等曝光部位,均可表现为低回声病变,基底部边界不清,侵及真皮层或皮下组织,BCC内可见多发特征性点状高回声,而SCC体积较大、浸润更深、血流信号更丰富。

关键词：皮肤肿瘤癌,基底细胞癌,鳞状细胞角化病,脂溢性超声检查

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基于单环境温度测试数据的家用冷柜标准耗电量拟合公式准确性研究

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制冷与空调 2020年第7期20卷 22-26页

作者：郭硕朱阳春澳柯玛股份有限公司制冷研发部澳柯玛股份有限公司

为简化家用冷柜产品耗电量测试流程,降低试验难度和工作量,本文设计仅通过一个环境温度、一次测试得出标准耗电量的方法并分析其准确性。通过环境温度16℃和32℃下的耗电量的实测数据,利用Origin软件拟合标准耗电量的计算公式,并对比拟... 详细信息

为简化家用冷柜产品耗电量测试流程,降低试验难度和工作量,本文设计仅通过一个环境温度、一次测试得出标准耗电量的方法并分析其准确性。通过环境温度16℃和32℃下的耗电量的实测数据,利用Origin软件拟合标准耗电量的计算公式,并对比拟合公式计算结果与试验结果,结果表明,基于环境温度32℃下的耗电量拟合的标准耗电量计算公式准确性相对较高,误差在±1%以内。

关键词：家用冷柜卧式冷冻箱卧式冷藏冷冻箱标准耗电量拟合公式

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361例新型冠状病毒肺炎患者中药治疗用药规律分析

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药物评价研究 2020年第9期43卷 1685-1692页

作者：胡进张欢陈辉朱阳春黄敏谢周涛湖北省中西医结合医院药学部湖北武汉430015 湖北省中西医结合医院科教科湖北武汉430015

目的分析确诊为新型冠状病毒肺炎(COVID-19)患者的中药饮片治疗处方,统计分析用药规律。方法收集湖北省中西医结合医院2020年2月1日—2月29日6个呼吸内科病区治疗COVID-19的中药处方,利用Excel、SPSS 25软件进行频数频率分析、关联分析... 详细信息

目的分析确诊为新型冠状病毒肺炎(COVID-19)患者的中药饮片治疗处方,统计分析用药规律。方法收集湖北省中西医结合医院2020年2月1日—2月29日6个呼吸内科病区治疗COVID-19的中药处方,利用Excel、SPSS 25软件进行频数频率分析、关联分析、聚类分析等。结果共纳入361例COVID-19患者治疗用中药处方共计529张,中药处方使用了292味中药,使用频数前5位的中药为茯苓、甘草、法半夏、陈皮、黄芩;中药类别频数前5位的为补虚药、化痰止咳平喘药、清热药、解表药、化湿药;关联规则显示,支持度最高的药对为茯苓和法半夏,置信度最高的药对为麸炒白术和茯苓;聚类分析共得11个聚类方。结论通过对所收集COVID-19用药数据进行分析,发现了中药以补虚为主,辨证加入化痰、止咳、平喘、清热、健脾化湿的用药及组方特点,与国家发布的COVID-19诊疗中医药治疗用药基本一致,为COVID-19的中医药治疗提供了参考。

关键词：新型冠状病毒肺炎关联分析聚类分析补虚药化痰止咳平喘药

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浙西南镉高背景值耕地的水稻安全利用技术研究

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丽水学院学报 2023年第2期45卷 71-76页

作者：陈振华朱阳春浙江农林大学环境与资源学院浙江杭州311300 景宁县农业农村局浙江景宁323500 丽水学院生态学院浙江丽水323000

我国土壤镉(Cd)污染区与水稻种植区在空间分布上基本吻合,水稻属于易积累Cd的作物之一。浙江省西南部分区域,由于母质原因,出现地质性重金属高背景值现象。本研究开展了中轻度Cd污染耕地安全利用的核心技术田间试验,包括低积累水稻品种... 详细信息

我国土壤镉(Cd)污染区与水稻种植区在空间分布上基本吻合,水稻属于易积累Cd的作物之一。浙江省西南部分区域,由于母质原因,出现地质性重金属高背景值现象。本研究开展了中轻度Cd污染耕地安全利用的核心技术田间试验,包括低积累水稻品种筛选、钝化修复材料筛选、农艺调控措施三项技术。结果表明:采用水稻甬优1540+石灰100 kg/亩+全生育期淹水+有机肥1150 kg/亩的安全利用集成技术模式能最大限度地降低水稻籽粒中的Cd含量,可以作为该区域镉高背景值耕地的水稻安全利用技术集成模式并推广应用。

关键词：耕地水稻镉污染安全利用

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