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Search Results: 1 - 10 of 171208 matches for " 杜晓军* "
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近44年藏东南低纬山地降水和气温的气候变化分析
Analysis of Climatic Variations of Precipitation and Temperature in Low Latitude Upland of Southeastern Tibet during 1971-2014
 [PDF]

马鹏飞, ,
Climate Change Research Letters (CCRL) , 2016, DOI: 10.12677/CCRL.2016.51002
Abstract:
选取1971~2014年藏东南4个气象站逐日气象资料,采用线性趋势、Mann-Kendall非参数检验等方法,分析了藏东南年、季降水量和气温的年际和年代际变化、气候突变。结果表明:近44 a年降水量呈现为减少趋势,平均每10 a减少1.24 mm,春季降水呈增加趋势,其他季节趋于减少,以秋季减少最为明显。年平均气温以0.28℃/10 a的速率显著升高,最高气温和最低气温都出现了升高的趋势。在10 a年际变化尺度上,年平均气温表现为逐年代升高趋势;年降水量在20世纪90年代偏多,其他3个年代均偏少。在时间突变点上,年平均气温出现在1994年;年、季降水量未出现突变。
Based on homogeneity-adjusted monthly mean temperature, maximum and minimum temperature and precipitation data of 4 stations in Southeastern Tibet from 1971 to 2014, the climatic variations and climate abrupt characteristics of air temperature and precipitation are analyzed by using the methods of linear regression and Mann-Kendall test, etc. The results show that during the past 44 years the annual precipitation decreases with a rate of 1.24 mm/10 a, while that in spring increases, but decreases in other season, especially in autumn. The annual mean temperature has increased in Southeastern Tibet with a rate of 0.28℃/10 a, the trends of mean maximum and minimum temperatures are increasing. On the decadal scale, the annual mean temperature shows increase trend, and the annual precipitation is more in the 1990s and less in the other three decades. According to the Mann-Kendall test, the abrupt change of annual mean temperature occurred in 1994, but no abrupt change appeared for annual and seasonal precipitation.
防护林防护成熟与干扰
, 姜凤岐
植物生态学报 植物生态学报 , 2002,
Abstract: ?防护成熟是经营防护林的核心问题。作者在回顾防护林防护成熟研究进展的基础上,指出以往关于防护林防护成熟的研究,往往把森林看作一个纯自然物品,这是个非常理想的状态;提出了在干扰几乎无处不在的当今社会,对防护林防护成熟的认识上应重视干扰因子的作用;并给出了防护林防护效益变化模式图,对防护成熟与干扰的关系进行了分析和讨论。
生态系统退化程度诊断:生态恢复的基础与前提
, 高贤明, 马克平
植物生态学报 植物生态学报 , 2003, DOI: 10.17521/cjpe.2003.0102
Abstract: ?生态系统退化程度诊断是进行生态恢复与重建的基础和前提。然而目前的生态系统化程度诊断大多停留在定性的水平,如何对退化生态系统的退化程度进行定量的诊断就成为恢复生态学与生态恢复实践所面临的一个迫切且十分关键的问题。在综述前人研究的基础上,比较系统地论述了生态系统退化程度诊断的一系列问题:绘制了描述生态系统退化程度的概念模型;认为在实践中退化程度诊断的参照系统可以选择相应的受人类或自然干扰程度比较轻的“自然生态系统”;归纳了生态系统退化程度诊断的生物途径、生境途径、生态过程途径、生态系统功能/服务途径、景观途径;把诊断方法分为单途径单因子诊断法、单途径多因子诊断法、多途径综合诊断法;分析了生态系统退化程度诊断的可能指标(体系);给出了生态系统退化程度诊断的策略与流程,并对生态系统退化程度诊断及生态恢复过程中应注意的事项进行了讨论。建议我国加强典型生态系统退化程度的综合诊断研究。
应用灰色系统理论评判板栗生态环境
,
中国生态农业学报 , 1993,
Abstract: 本文应用灰色关联度分析了河北省板栗生态环境,将生态环境分为4个区。分析结果与原模糊聚类分析结果相似,是一种比较科学、简便易行的综合评价方法。
从地方到整体:区域武术文化研究的范式辨析与超越进路
From Local to Integral: The Discrimination on the Study Patterns of Regional Wushu Culture and Its Road of Transcending

舒书,
- , 2018, DOI: 10.19582/j.cnki.11-3785/g8.2018.07.018
Abstract: 摘要:区域武术文化研究对理解整体中国武术文化有着现实的学术积累意义,丰富的区域研究成果对近距离地认识武术文化有着重要的贡献。主要采用文献资料法,以“地方武术文化研究”和“区域武术文化研究”两种范式的辨析以及“区域武术文化研究”的超越进路为研究对象展开分析。研究发现,当下的区域武术文化研究存在一定的局限性,其根源在于对地方武术文化和区域武术文化两种不同研究范式的混淆。前者只是研究某一固定边界的区域内部的武术文化事项,而后者则是藉由某一区域透视整体性武术文化内在运行机制的一种研究范式。遗憾的是,当前很大一部分以“区域武术文化研究”为名的成果,实质却是“地方武术文化研究”。区域武术文化研究应秉承藉由地方性知识达至整体认识的研究理念,在研究实践中,以文化场域为研究对象,从大问题出发,秉持整体观念,以客观中正的态度开展调查,努力探寻区域武术文化形成、发展的内在运行机制。
Abstract: The study of regional Wushu culture has a realistic academic significance for understanding the overall Chinese Wushu culture. The rich research results of regional Wushu culture have an important contribution to the knowledge of Wushu Culture in the near distance. By the method of literature review, this paper analyzes the two paradigms of "the study of local Wushu Culture" and "the study of regional Wushu Culture", as well as the transcendental approach of "regional Wushu Culture Research". The results showed that: There are some limitations in the current study of regional Wushu culture, which is rooted in the confusion between two different research paradigms of local Wushu culture and regional Wushu culture. The former is only a study of the internal Wushu culture in a certain fixed border area, while the latter is a research paradigm of the internal operation mechanism of the overall Wushu culture by a certain area. Unfortunately, a large part of the current research on the name of "regional Wushu Culture Research" is actually "the study of local Wushu Culture". The study of regional Wushu culture should adhere to the concept of the study through local knowledge to the overall understanding. In the practice, research should take the cultural field as the research object, start from the big problem, holding the whole concept, carry out the investigation with the objective and positive attitude, and try to explore the internal operation mechanism of the formation and development of the regional Wushu culture
地理本体空间特征的形式化表达机制研究
黄茂, 清运, 
武汉大学学报(信息科学版) , 2005,
Abstract: ?针对owl语言表达地理本体的不足,提出借助于部分整体学、位置理论以及拓扑学这3个理论工具,构造出形式化的空间特征以及空间关系公理,加入到owl的建模原语当中,从而能够在owl构建的地理本体之中表达其空间特征。实验表明,这种本体的形式化表达机制是可行的,能够有效地表达地理本体的空间特征
50例顺产后阴道松弛症的手术治疗及功能锻炼的临床疗效观察
,,苏冰,唐祝君
第三军医大学学报 , 2012,
Abstract: 目的探讨手术结合功能锻炼对顺产后阴道松弛症的治疗效果。方法选取2006年9月至2010年12月在本科就诊的50例患者进行回顾性分析,采用手术恢复损伤肛提肌的解剖结构,并进行功能康复锻炼。结果50例受术者均愈合良好,没有出现阴道直肠瘘或感染并发症。术后随访6个月至2年,多数受术者自诉对术后效果满意,感觉阴道收缩有力,无下垂感,排尿、排便控制自如,夫妻性生活和谐。结论顺产后阴道松弛症是由于肌肉损伤引起,根据肛提肌损伤的情况,手术收紧肛提肌,保留阴道黏膜的完整性,并配合功能康复锻炼促进肌肉及阴道的弹性恢复,可以矫正阴道松弛,提高患者性生活质量,效果确切。
半椎板开窗镜下微创切除椎管内偏侧髓外硬膜下肿瘤
,,买正,,夏鹤春
宁夏医科大学学报 , 2014,
Abstract: 目的探讨半椎板开窗入路治疗椎管内偏侧髓外硬膜下肿瘤的方法和临床应用价值。方法根据MRI的影像学资料,确定肿瘤的位置和生长方式,麻醉体位摆好后再用C-形臂下精确定位。手术采用半椎板开窗切除肿瘤,术中一直用脊髓电生理肌电监测相应手术节段的脊髓神经根功能状态。结果15例患者均为偏一侧椎管内髓外硬膜下肿瘤,11例神经鞘瘤,4例为脊膜瘤,全部镜下全切除,术后神经功能均完全恢复,无一例加重损伤。结论采用半椎板开窗入路镜下切除椎管内肿瘤提高了脊髓手术的微创性,保留了椎体关节的完整性,保证了脊柱的稳定性,术后卧床时间短,并发症少,恢复快。
Assessment of ecological benefits of Chinese pine in soil and water conservation forests in Western Liaoning Province
辽西油松林水土保持效益评价

DU Xiao-Jun,

生态学报 , 2003,
Abstract: In this paper, the ecological benefits of Soil and Water Conservation Forests planted with Chinese pine (Pinus tabulaeformis) were assessed for 101 plots in Western Liaoning Province by using the comprehensive-index assessment method. The comprehensive-index assessment method is an indirect but effective method used for estimation, especially when the main functional indices are difficult to measure. In order to use this method, a system of estimation indices assessing the ecological benefits of forests was designed for Western Liaoning, including estimation criteria and classification of benefits. The types of forest ecological benefits were classified based on the weight value of every index (by Analytic Hierarchy Process, i.e. AHP) and the comprehensive estimate index (from the survey materials of forest stands).The Soil and Water Conservation Forests of Western Liaoning Province were divided into five classes using the comprehensive-index assessment method: lower-benefit forest, low-benefit forest, middle-benefit forest, high-benefit forest and higher-benefit forest. Most forests of the Niuheliang, Qitian, and Nanliuzhangzi regions were classified as low-benefit, middle-benefit, and high-benefit forests respectively. In Niuheliang region, lower-benefit, low-benefit and middle-benefit forests accounted for 79.4%, 14.7% and 5.9% respectively. In Qitian region, lower-benefit forest, low-benefit and middle-benefit forests were 4.5%, 22.7%, 72.7% respectively. In Nanliuzhangzi region, high-benefit and higher benefit forests were 16.7% and 83.3% respectively. The results showed that forest structural integrity (especially the forests' layer structure) has a great significance in the ability of Soil and Water Conservation Forests to provide ecosystem services. In particular, a key task for ecosystem management in these pine forests is the conservation of the herbage layer and the litter layer on the forest floor. The policy of forest protection should be adopted as an effective approach for ecosystem management in Soil and Water Conservation Forests planted with Chinese pine in Western Liaoning Province.
都兰钝额斑螟的生物学特性及四种杀虫剂的室内毒力测定
严林,,张永,艳丽
应用昆虫学报 , 2011,
Abstract: 都兰钝额斑螟bazariadulanensisduetyan是柴达木盆地南部地区唐古特白刺(nitradatangutorumbobr.)灌丛的主要害虫之一。为有效控治该害虫对唐古特白刺的危害,本研究采用室内饲养和田间定点观察,对其生物学特性进行观察,结果表明:都兰钝额斑螟在柴达木盆地一年发生1代,幼虫共5龄,以滞育蛹越冬,翌年5月下旬越冬成虫开始羽化,6月上旬为交配、产卵盛期,6月下旬为卵孵化盛期,幼虫期从6月中旬开始一直延续至8月下旬,8月中下旬进入化蛹盛期,随后蛹进入滞育越冬。其中,7月中下旬为初龄幼虫发生盛期,是该害虫防治的最佳时期。毒力试验结果表明:4种杀虫剂对4龄幼虫的触杀毒力从高到低依次为氯氰菊酯、阿维菌素、类产碱、草毒蛾;对5龄幼虫的胃毒毒力从高到低依次为氯氰菊酯、类产碱、阿维菌素、草毒蛾。对4龄幼虫的触杀毒力从高到低依次为阿维菌素、类产碱、氯氰菊酯、草毒蛾;对5龄幼虫的触杀毒力从高到低依次为类产碱、阿维菌素、氯氰菊酯、草毒蛾。yan
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