Results 71 to 80 of about 3,420 (112)

人工柠条林地土壤水分补给和消耗动态变化规律

Shuitu Baochi Xuebao, 2007
黄土高原地区水资源缺乏，水资源，特别是土壤水资源的适度开发和合理利用势在必行。在黄土丘陵半干旱区的上黄生态试验站对多年生人工柠条林林冠截留，地表径流，土壤水分和植物生长等进行了定位观测，对林地土壤水分补给和消耗动态变化规律进行分析。结果表明，人工柠条林次降雨林冠截留随降水量增加而逐渐增加，地表径流与林外降雨量为直线关系。影响土壤水分补给的主要因素为天然降水，其次为林冠截留。土壤水分补给量与降雨量为线性关系；降水对土壤水分的影响程度随深度的增加而减弱，土壤水分最大入渗深度为170～270cm ...
doaj  

[Applications of molecularly imprinted solid-phase microextraction coupled with chromatography/mass spectrometry for determination of drug residues]. [PDF]

Se Pu
Yan J, Huang J, Peng S, Man M, Sun D, Liu P, Chen L, Li J, Fan H.   +8 more
europepmc   +1 more source

[Research progress on high performance liquid chromatography stationary phases based on mixed mode]. [PDF]

Se Pu
Li SJ, Li Z, Tang ZX, Lyu M, Wang LT.
europepmc   +1 more source

[Integration of Microbiome Research and the One Health Approach Promotes Innovation and Development in Public Health Laboratory Sciences]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Yang R.
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石漠化坡地不同整地措施下表层土壤水分空间分布特征

Shuitu Baochi Xuebao
[目的] 分析石漠化坡地不同整地措施下表层土壤水分的空间分布特征,为提高石漠化坡地的水资源利用效率和农业管理水平提供参考依据。[方法] 以石漠化坡地中反坡、斜坡和平地3种整地措施下的柑橘林地为研究对象,采用经典统计学、地统计学和多重分形理论研究土壤水分的空间分布特征。[结果] (1)反坡的土壤含水量显著高于平地和斜坡(p＜0.05),平地土壤含水量的空间连续性和聚集性以及总变异和结构性变异强于斜坡和反坡。(2)不同整地措施下的土壤含水量均具有中等强度变异性(10.00%≤CV≤100.00 ...
田卓, 张帅普, 徐勤学
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[Determination of 31 perfluoroalkyl and polyfluoroalkyl substances in water by ultra performance liquid chromatography-triple quadrupole mass spectrometry combined with direct injection]. [PDF]

Se Pu
Yang C, Li P, Zhang Y, Wang L, Hou M, Shi Y, Cai Y.   +6 more
europepmc   +1 more source

[Diabetic foot care: full-lifecycle management driven by digital intelligent technologies]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Chen L, Ran X.
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[Research progress in material preparation and application of magnetism-enhanced in-tube solid-phase microextraction]. [PDF]

Se Pu
Luo YN, Chen J, Hu YY, Gao SJ, Wang YL, Liu YM, Feng JJ, Sun M.   +7 more
europepmc   +1 more source

[Toxicity of lunar dust simulant exposure via the digestive system: Microbiota dysbiosis and multi-organ injury]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Chen Y, Liu Y, He S, Gong X, Cheng Q, Chen Y, Hu X, Wang Z, Xie H.   +8 more
europepmc   +1 more source

[Determination of three new herbicide residues in soil, sediment and water by liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
He HM, Xu LY, Zhang CP, Fang N, Jiang JH, Wang XY, Yu JZ, Zhao XP.   +7 more
europepmc   +1 more source