This study improved the application of the Holdridge life-zone model to simulate the distribution of desert vegetation in China which gives statistics to support eco-recovery and ecosystem reconstruction in desert are...This study improved the application of the Holdridge life-zone model to simulate the distribution of desert vegetation in China which gives statistics to support eco-recovery and ecosystem reconstruction in desert area. This study classified the desert vegetation into four types： （1） LAD： little arbor desert; （2） SD： shrub desert： （3） HLHSD： half-shrub, little half-shrub desert; （4） LHSCD： little halfshrub cushion desert. Based on the classification of Xinjiang desert vegetation, the classical Holdridge life-zone model was used to simulate Xinjiang desert vegetation＇s distribution and compare the Kappa coefficient result of the model with table of accuracy represented by Kappa values. The Kappa value of the model was only 0.19, it means the simulation result was poor. To improve the life-zone model application to Xinjiang desert vegetation type, a set of plot standards for terrain factors was developed by using the plot standard as the reclassification criterion to climate sub-regime. Then the desert vegetation in Xinjiang was simulated. The average Kappa value of the second simulation to the respective climate regime was 0.45. The Kappa value of final modeling result was 0.64, which is the better value. The modification of the model made it in more application region. In the end, the model＇ s ecological relevance to the Xinjiang desert vegetation types was studied.展开更多
目的观查斯锑黑克治疗荒漠型黑热病的临床效果。方法 r K39金标法和ELISA夹心法检测黑热病抗体,B超仪测量脾脏的长度和厚度,全自动分析仪进行血液及生化检测。结果荒漠型黑热病患者42例,黑热病抗体全部阳性;治疗前脾脏的长度和厚度分别...目的观查斯锑黑克治疗荒漠型黑热病的临床效果。方法 r K39金标法和ELISA夹心法检测黑热病抗体,B超仪测量脾脏的长度和厚度,全自动分析仪进行血液及生化检测。结果荒漠型黑热病患者42例,黑热病抗体全部阳性;治疗前脾脏的长度和厚度分别为正常的1.67倍和1.81倍,治疗后基本恢复正常;白细胞、红细胞、血红素、血小板治疗后显著升高（t值为3.633-6.422,P〈0.01）,草转氨酶降低（t值为2.455,P〈0.05）,恢复正常,前后差异具有统计学意义（P〈0.05）。治疗前后血清球蛋白、谷丙转氨酶均处于正常范围。结论荒漠型黑热病的主要症状为脾脏肿大,严重贫血,营养不良,肝功能损伤;本次用斯锑黑克治疗荒漠型黑热病的总剂量为（278.4±39.2）mg/kg,分6次-10次给药,（16±6）d全部出院,至今6年没有发现复发或再感染。展开更多
文摘This study improved the application of the Holdridge life-zone model to simulate the distribution of desert vegetation in China which gives statistics to support eco-recovery and ecosystem reconstruction in desert area. This study classified the desert vegetation into four types： （1） LAD： little arbor desert; （2） SD： shrub desert： （3） HLHSD： half-shrub, little half-shrub desert; （4） LHSCD： little halfshrub cushion desert. Based on the classification of Xinjiang desert vegetation, the classical Holdridge life-zone model was used to simulate Xinjiang desert vegetation＇s distribution and compare the Kappa coefficient result of the model with table of accuracy represented by Kappa values. The Kappa value of the model was only 0.19, it means the simulation result was poor. To improve the life-zone model application to Xinjiang desert vegetation type, a set of plot standards for terrain factors was developed by using the plot standard as the reclassification criterion to climate sub-regime. Then the desert vegetation in Xinjiang was simulated. The average Kappa value of the second simulation to the respective climate regime was 0.45. The Kappa value of final modeling result was 0.64, which is the better value. The modification of the model made it in more application region. In the end, the model＇ s ecological relevance to the Xinjiang desert vegetation types was studied.
文摘目的观查斯锑黑克治疗荒漠型黑热病的临床效果。方法 r K39金标法和ELISA夹心法检测黑热病抗体,B超仪测量脾脏的长度和厚度,全自动分析仪进行血液及生化检测。结果荒漠型黑热病患者42例,黑热病抗体全部阳性;治疗前脾脏的长度和厚度分别为正常的1.67倍和1.81倍,治疗后基本恢复正常;白细胞、红细胞、血红素、血小板治疗后显著升高（t值为3.633-6.422,P〈0.01）,草转氨酶降低（t值为2.455,P〈0.05）,恢复正常,前后差异具有统计学意义（P〈0.05）。治疗前后血清球蛋白、谷丙转氨酶均处于正常范围。结论荒漠型黑热病的主要症状为脾脏肿大,严重贫血,营养不良,肝功能损伤;本次用斯锑黑克治疗荒漠型黑热病的总剂量为（278.4±39.2）mg/kg,分6次-10次给药,（16±6）d全部出院,至今6年没有发现复发或再感染。
