Comparative study on community ecology of transition zone along Eucalyptus citriodora to Acacia confusa forest stands [PDF]
, 2011 近年来，外来树种桉树在我国大量种植，产生了巨大的经济效益，但同时，其速生性、较强的化感作用等特性，也带来一些负面的环境问题，评估桉树种植的环境生态影响成为当前林业生态研究的热点。目前大量的研究集中在桉树群落生态学上，而关于桉树与乡土树种过渡带的群落生态学的综合比较研究未见报道。 为此，本文针对无居民海岛柠檬桉（Eucalyptuscitriodora）林与台湾相思（Acaciaconfusa）林过渡带三种林分林下层植被群落生态、林分凋落物及其分解动态进行了研究 ...
李学梅
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Shuitu Baochi Xuebao, 2007 以山西省临汾市不同种植年限的蔬菜日光温室土壤为研究对象，分析了土壤有机质、碱解氮、硝态氮、速效磷、速效钾等养分指标的累积状况以及温室土壤电导率、可溶性盐、pH值的变化情况。结果表明，与大田土壤相比，温室土壤电导率和可溶性盐含量逐年增加，pH值下降，种植8a的日光温室土壤盐分累积量已接近黄瓜的生育障碍临界点；土壤养分均有不同程度的累积，尤其是土壤速效磷、硝态氮的累积严重；日光温室特殊的环境条件以及过量施用化肥是土壤盐分累积和养分富集的主要原因。
杜新民 +3 more
doaj
[Application of Droplet-Based Microfluidics in Microbial Research]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2023 Li ZY, Peng X.
europepmc +1 more source
A case of Elizabethkingia meningoseptica septicemia. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2023 Wu L, Ye T, Pan X, Hong L, Shi Y.
europepmc +1 more source
Shuitu Baochi Xuebao, 2017 为探究不同覆盖措施对养分流失及其粒径分布的影响，采用人工模拟降雨试验的方法，模拟了不同雨强（30，60 mm/h）和不同覆盖物（枯落物、砾石）下，不同覆盖度对褐土坡面养分流失的影响，并对侵蚀土壤的粒径分布、养分流失浓度进行了分析。研究表明：（1）覆盖措施能够有效减少土壤流失，250 g/m2的枯落物和盖度为50%的砾石覆盖可减少91%~98%和68%~91%的土壤流失。（2）褐土坡面下，被侵蚀土壤中有机质、速效氮、速效磷的浓度基本不随覆盖条件的变化而变化 ...
李瀚之 +5 more
doaj
[Rapid and simultaneous determination of glyphosate, glufosinate, and their metabolites in soil by high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se Pu, 2022 Ping H +6 more
europepmc +1 more source
[Determination of 26 herbicide residues in soil， sediment， and surface water samples using modified QuEChERS method combined with ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuZhao L, Ma L, Huang LQ, Chen JB, Zhu WF.
europepmc +1 more source
[Evaluation of Gradient-Variant Quantum Dot Fluorescence Technology for Rapid Detection of <i>Brucella</i>]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanLi J +9 more
europepmc +1 more source
[Research progress on interference in the identification of accelerants in a fire scene]. [PDF]
Se Pu, 2022 Yin G +5 more
europepmc +1 more source
[Effects of lunar soil simulant and Earth soil on lung injury in mice]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanGong X +8 more
europepmc +1 more source