利用室内模拟降雨试验,研究了在坡面施入硝酸铵对土壤矿质氮素随地表径流流失和入渗的影响,初步探讨了降雨-地表径流-土壤矿质氮素的有效作用深度(Effective Depth of Interaction,EDI),分别用反推法和拐点法确定了不施肥试验和施肥试验时的土壤矿质氮素EDI。结果表明:①与不施肥相比,施肥增加了土壤矿质氮素的地表流失量,施25,50和100 g NH4NO3处理矿质氮分别多流失了55.22,73.32和85.50 mg/m2;②施肥使土壤肥料的入渗量增加 ...
肖波, 张兴昌, 李怀恩, 张亚丽
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[Exploration of the mechanisms of portal hypertension driven by metabolic disorders in non-cirrhotic stages of metabolic-associated fatty liver disease]. [PDF]
Zhao YQ, Wang Y, Liu JJ, You H, Zhao JJ.
europepmc +1 more source
新疆古尔班通古特沙漠地表具有发育完好的生物土壤结皮,本文以参与组成生物土壤结皮的优势藓类——齿肋赤藓(Syntrichia caninervis)为研究对象,在实验室内对其进行模拟降雨处理,降雨量分别为0mm(对照)、2mm、6mm、10 mm和15mm,研究模拟降雨影响下齿肋赤藓植株含水量、光合色素含量及可溶性糖、游离脯氨酸、可溶性蛋白、抗氧化酶(SOD、CAT和POD)、丙二醛含量的变化,以探讨其对降雨的生理生化响应.结果表明:随降雨量的增加,齿肋赤藓植株含水量显著增加;随齿肋赤藓植株含水量的增加 ...
中国科学院新疆生态与地理研究所干旱区生物地理与生物资源重点实验室,新疆乌鲁木齐,830011 +2 more
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[Effect of the number of sensitizing allergens on the efficacy of subcutaneous immunotherapy and quality of life in children with asthma]. [PDF]
Xu MY +6 more
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[Determination of the key characteristic components in ginger from different origins by internal extractive electrospray ionization mass spectrometry]. [PDF]
Wang HT +5 more
europepmc +1 more source
[Characteristics of urinary organic acid metabolic profile and screening of key metabolic markers in patients with urolithiasis]. [PDF]
Qi Z +9 more
europepmc +1 more source
Acid Rain Status and Control Strategy in Taiwan Area
依80年度(79.4~80.4.)台灣地區的酸雨調查資料顯示台灣地區酸雨的幾項特性,條列如后: 1.酸雨現象已普遍存在,除嘉義(5.51)、墾丁(5.26)及澎湖(5.07)外,其餘7站皆低於5.0,表示台灣地區雨水已受到人為污染。 2.春季滯留鋒雨,冬季鋒面雨為台灣地區較易發生酸雨的兩種降水型態。 3.酸雨分布與土壤酸鹼度分布有關。 4.台灣地區酸雨發生頻率 ...
陳淨修, Jing-Shiou Chen
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[Glutamine metabolic reprogramming in regulating the occurrence and development of osteosarcoma]. [PDF]
Xu Y +5 more
europepmc +1 more source
[N-carbamylglutamate in the treatment of neonatal organic acidemia crisis: a report of five cases]. [PDF]
Zhao HY +5 more
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Effects of acid rain on antioxidative system In Cinnamomum philippinense seedlings
本試驗藉由探討菲律賓樟樹(Cinnamomum philippinense)在酸雨逆境下的抗氧化表現,以瞭解植物的抗氧化防禦作用在酸雨逆境的誘導反應。模擬酸雨是以SO42-及NO3-當量濃度比2.5:1的比例混合後,調整pH值為4、3及2,並以蒸餾水(pH 6)作為對照組。於酸雨噴灑1、10及15天後進行取樣分析。試驗結果為pH 4、3及2酸雨噴灑1天後,葉片內的H2O2含量立即高於對照組,進而誘發過氧化氫The study was to examine the importance of the ...
Liu, En-U, 劉恩妤
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