Shuitu Baochi Xuebao, 2004 土壤有机碳(Soilorganiccarbon,SOC)是反映土地荒漠化的重要指标。本研究以陕西省榆林市为例,开展小区域沙漠化重建地区SOC动态的实证研究。SOC数据来源于1982年土壤普查和2003年重复采样,土样的采集、分析和统计方法分别为土钻取土法、重铬酸钾氧化法、吸管法和面积加权法。研究结果表明:SOC含量与粗砂粒显著负相关(R=-0.50,a=0.01),与粘粒显著正相关(R=-0.45,a=0.05),20年间土壤颗粒细化趋势比较明显;20年间原始剖面、1m深和耕层SOC含量 ...
程淑兰 欧阳华 牛海山 王琳 田玉强 张锋
doaj
Shuitu Baochi Xuebao, 2018 以黄土高原北部水蚀风蚀交错带六道沟流域内的1个支沟为对象，通过植被调查和采样分析，研究了坡向和植物群落类型对土壤有机碳（SOC）、全氮（TN）含量、碳氮比（C/N）和有机碳氮密度（SOCD、TND）的影响。结果表明：（1）坡向对0—20 cm土壤SOC和TN含量及0—60 cm C/N均有显著影响。SOC、TN含量及C/N分别表现为：半阴坡 > 半阳坡 > 沟头半阴坡 > 半阳坡=沟头及半阳坡 > 半阴坡≥沟头的趋势；（2）植物群落对0—10 cm SOC和TN含量及0—20 cm C/N均有显著影响 ...
张凯, 徐慧敏, 李秧秧
doaj
Shuitu Baochi Xuebao[目的] 为探究流域尺度综合水土保持措施下土壤碳库的演变特征,评估流域水土保持碳汇潜力。[方法] 以黄土高原典型水土流失治理小流域滕子沟为研究对象,分析流域1977—2022年水土保持措施配置时空变化,明确不同水土保持措施配置下土壤有机碳(SOC)库演变规律,结合情景分析评估不同水土保持配置下流域土壤碳汇潜力。[结果] (1)与1977年相比,流域水土保持措施总面积增加32.9%,其中坝地、坡面林地、梯田草地和梯田林地面积分别增加0.5%,5.0%,11.1%,16.3 ...
贺国凯 +5 more
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[Medical treatment standards for emergency burn wounded (2025 edition)]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiNational Health Commission Of The People's Republic Of China.
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[Establishment and application of a knowledge-directed pseudo-targeted analytical method for diabetic retinopathy]. [PDF]
Se PuHou YQ +8 more
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Sichuan Da Xue Xue Bao Yi Xue BanCheng R, Lei L, Zhang R, Cai H, Hu T.
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Se PuWu JY, Huang XJ.
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Se PuZhan XB, Qin Y, Yan Y, Zhou J, Zhao LS.
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[Determination of trace polychlorinated biphenyls in environmental water samples by solid-phase microextraction-gas chromatography-tandem mass spectrometry using carbon nanotube composite microspheres materials]. [PDF]
Se PuSong XL +4 more
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