Results 61 to 70 of about 365 (98)
The Historical Evolution and Evaluation of Development Policies for Western China [PDF]
After the founding of P.R. China, China’s regional development strategy experienced the evolution progress of “Balanced Development→Unbalanced Development→Coordinated development”. There exist twice “GO-WEST” campaigns which laid the foundation of modern
Deng, Xiang, Lu, Zheng
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Combination of InSAR and neural networks for the deformation monitoring and prediction of Fanjiaping landslide [PDF]
Traditional methods for monitoring surface deformation of landslides have significant limitations, including small monitoring coverage, difficulty in acquiring information in complex terrains, and high economic costs.
Shuqiang LU +3 more
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Study on mechanism and prediction of bank collapse of complex terrace bank slope in southwest China: A case study of front bank collapse in Cizhong [PDF]
Taking the bank collapse in front of the Cizhong resettlement site of the Wunonglong Hydropower Station on the Lancang River as an example, this study analyzed the bank collapse mode and,causative mechanisms, predicted the width and elevation of the bank
Guanghong JU +5 more
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The water resource efficiency and water-saving effect of cascade hydropower development [PDF]
[Objective] The aim of this study was to reveal the pattern of change of water resource efficiency in cascade hydropower development, in order to improve the water resource efficiency of cascade hydropower development and promote water-saving development.
ZHANG Jin, DING Yajing
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Shuitu Baochi Xuebao, 2004 通过对三峡库区重庆市缙云山4种典型植被类型(针阔叶混交林,阔叶林,楠竹林和灌木林)的林下枯落物的调查分析和进行枯落物持水过程研究,得到不同植被类型枯落物的持水特征。结果表明枯落物储量为灌木林>阔叶林>针阔混交林>楠竹林。枯落物最大持水深为灌木林>针阔混交林>阔叶林>楠竹林,其最大吸水率为针阔混交林>灌木林>阔叶林>楠竹林。在枯落物持水作用较强的前2h内,其吸水速率最快的为灌木林1.949mm/h,其次为针阔混交林和阔叶林,都为1.031mm/h ...
王云琦 王玉杰 张洪江 夏一平 肖江伟 吴云
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Sediment-water Flux and Processes of Nutrients and Gaseous Nitrogen Release in a China River Reservoir [PDF]
, 2014 以九龙江北溪西陂电站库区为例,于2013年不同季节开展原状泥柱静态培养、气态氮水柱剖面观测和通量模拟实验,结合水和沉积物理化参数和微生物参数,研究河流库区沉积物-水界面营养盐及气态氮的释放过程和通量.结果表明,库区沉积物nH+4和PO3-4总体表现为释放行为[平均nH+4通量(480±675)Mg·(M2·d)-1,平均PO3-4通量(4.56±0.54)Mg·(M2·d)-1],而nO-3和nO-2表现为吸附行为.洪水季节带来大量的有机质沉积在库区,造成枯水期沉积物无机氮磷向上覆水体释放 ...
吴殷琪 +6 more
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Shuitu Baochi Xuebao, 2011 以三峡库区紫色土旱坡地为研究对象,采用野外径流小区观测方法,研究了三峡库区旱坡地不同坡度下土壤磷素的流失特征.结果表明,地表径流量和侵蚀泥沙量都随着坡度的增大而增大,且径流量和泥沙量是先增大后减小,最后趋于稳定.地表径流和侵蚀泥沙中磷素的流失量均呈l7°＞9°＞4°的趋势.地表径流中,颗粒态总磷流失量是水溶态总磷流失量的1.50～1.51倍.全磷主要吸附在泥沙中流失,磷素随泥沙的流失量占总流失量的85.0%～94.1%.研究结果为三峡库区旱坡地磷素的管理提供理论依据.
黄利玲, 王子芳, 高明, 季轶群
doaj
Geomorphic signatures of reservoir–slope hazards triggered by the Baihetan Reservoir impoundment, lower Jinsha River, China [PDF]
Objective Slope instability triggered by reservoir water-level fluctuations represents a prevalent geohazard in mountainous regions and canyons undergoing large-scale hydropower development. Since the 21st century, accelerated hydropower development has
DAI Fuchu +7 more
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Shuitu Baochi Xuebao, 2003 通过对三峡重庆库区16个市、县(区)旱地和水田土样分析、统计、评价,研究了库区耕地土壤主要重金属元素分布特征。结果表明,库区耕地土壤有不同程度污染,重金属As、Cd、Cu、Ni的含量均有超标,Cd有最大超标;旱地土壤重金属含量略高于水田,紫色土略高于黄壤,各采样点重金属含量差异大;重金属元素Cd、Pb、Cu、As、Zn间存在极显著正相关,土壤污染有复合污染趋势;主要淹水区县土壤环境质量评价结果显示,仅巫山县污染综合指数评价为中污染,主城区、开县为轻微污染,涪陵区、长寿区、奉节县为警戒级,其余为安全级 ...
许书军 魏世强 谢德体
doaj
关于由前语素‘微’所构成的中日词汇的对比研究（之一） ─以持有中国清末以前例证的同形同义词为主─ [PDF]
, 2013 『日本国語大辞典 第二版』的133个“微”词语中，约有61个日中同形同义词持有中国清末以前的例证。经查证和研究发现，日语里收为词的，在汉语里根据词典收入状况可分为: 国语型、外语型、中间型和未收型4种。“外语型”的，均为清末民初的西学翻译词语，它们在汉语里大多是随着西学东渐的展开而慢慢地被收入于中英词典或专业用语词典而非汉语词典；而它们在日语里则大凡在西学资料传入日本不久后便被收入日语词典。再如“未收型”的，它们与日语不同，未收入任何词典。这些现象主要缘于日中语言的词汇体系的不同，以及日中言语对和 ...
Yu Mingmeng, 兪 鳴蒙
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