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Progress in study on irrigation practice with saline groundwater on sandlands of Taklimakan Desert Hinterland

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Chinese Science Bulletin 2006年第A01期51卷 161-166页

作者： XU Xinwen li bingwen WANG Xiaojing Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China

分发和在在沙上使用盐的地下水的不同灌溉方法和管理下面的土壤潮湿和盐的动态变化上的学习 Taklimakan 沙漠的内地登陆，在 1997 开始了。结果显示出那滴下灌溉能被用于幼苗(沟灌溉能被使用铺平陆地) 用在在 Taklimakan 的内地沿着荒... 详细信息

分发和在在沙上使用盐的地下水的不同灌溉方法和管理下面的土壤潮湿和盐的动态变化上的学习 Taklimakan 沙漠的内地登陆，在 1997 开始了。结果显示出那滴下灌溉能被用于幼苗(沟灌溉能被使用铺平陆地) 用在在 Taklimakan 的内地沿着荒芜的高速公路构造生物的变沙控制系统的进程的盐的地下水抛弃；20 天的灌溉频率和 30 kg/m2 的灌溉数量 ????? 猠湡汤湡獤？？

关键词：地下盐水灌溉制度农田水利沙地

Dissolved organic sulfur in streams draining forested catchments in southern China

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Journal of Environmental Sciences 2012年第4期24卷 704-710页

作者： Zhanyi Wang Xiaoshan Zhang Zhangwei Wang Yi Zhang bingwen li Rolf Vogt Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China College of Ecology and Environmental Science Inner Mongolia Agricultural UniversityHohhot 010018China Department of Chemistry University of OsloP.O.BOX 1033BlindernN-0315 OsloNorway

Dissolved organic sulfur （DOS） is an important fraction for sulfur mobilization in ecosystem. In this work stream waters were sampled in 25 forested sites in southern China to study the dissolved sulfur fractions. Dissolved sulfur was fractionated into dissolved organic sulfur （DOS） and inorganic sulfate （SO]-） for 95 stream water samples. The results showed that the concentration of DOS ranged from 0 to 13.1 mg/L （average 1,3 mg/L） in all the streams, High concentrations of DOS in stream waters were found in the sites with high concentrations of sulfate. DOS constituted less than 60.1% of dissolved sulfur （average 17.9%）. Statistical analysis showed that DOS concentration was correlated with SO42- in streams waters and total sulfur in surface layer soils. The results also showed that DOS concentration in stream waters had a seasonal variation, but no trends were found with it. The implication was that the long term sulfur deposition had led the increase of the concentration and fraction of DOS in stream waters in acid rain prevailing regions

关键词： dissolved organic sulfur stream water Chinese forests sulfur deposition

Efficient adsorption separation of methane from C_(2)-C_(3) hydrocarbons in a Co(Ⅱ)-nodes metal-organic framework

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Chinese Journal of Chemical Engineering 2024年第5期69卷 192-198页

作者： Jie Zhang Xingzhe Guo Bing lin Guangzu Xiong Hanshuang Wang Min Zhang liwen Fan bingwen li Shuisheng Chen Department of Chemistry and Chemical Engineering Taiyuan Institute of TechnologyTaiyuan 030008China Engineering Research Center of Oligosaccharides Fuyang Normal UniversityFuyang 236041China Shandong Key Laboratory of Biophysics Institute of BiophysicsDezhou UniversityDezhou 253023China

Methane(CH_(4))as a substitute for other mineral fuels plays a crucial role in reducing energy consumption and preventing environmental *** present study employs a solvothermal method to fabricate a porous framework Co-metal-organic framework(Co-MOF)containing two distinct secondary building units(SBUs):an anionic[Co_(2)(μ_(2)-OH)(COO)_(4)(H_(2)O)]and a neutral[CoN_(2)(COO)_(2)].Notably,within the anionic SBUs,the coordinated water molecules induce the generation of divergent unsaturated Co(Ⅱ)centers in the unidirectional porous channels,thereby creating open metal *** adsorption performance of Co-MOF towards pure component gases was systematically *** results demonstrated that Co-MOF exhibits superior adsorption capacity for C_(2)-C_(3) hydrocarbons compared to CH_(4),which offers the potential for efficient adsorption and separation of CH_(4) from C_(2)-C_(3) *** gas selectivity separation ratios of Co-MOF for C_(2)H_(6)/CH_(4) and C_(3)H_8/CH_(4) were calculated using the ideal adsorbed solution theory method at 273/298 K and 0.1 *** results revealed that Co-MOF achieved remarkable equilibrium separation selectivity for CH_(4) and C_(2)-C_(3) hydrocarbon gases among non-modified MOFs,signifying the potential of the synthesized Co-MOF for efficient recovery and purification of CH_(4) from C_(2)-C_(3) *** experiments further demonstrate the ability of Co-MOF to purify methane from C_(2)-C_(3) hydrocarbons in practical gas separation ***,molecular simulation calculations further substantiate the propensity of anionic SBUs to interact with C_(2)-C_(3) hydrocarbon *** study provides a novel paradigm for the development of porous MOF materials in the application of gas mixture separation.

关键词： Co-MOF Separation hydrocarbons Dynamic breakthrough curves Molecular simulations adsorbent Monte Carlo simulation

Site type classification for the shelter-forest ecological project along the Tarim Desert Highway

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Chinese Science Bulletin 2008年第S2期53卷 31-40页

作者： li bingwen XU XinWen LEI JiaQiang QIU YongZhi XU Bo ZHOU HongWei WANG Qiang WANG BO SU Wei College of Soil and Water Conservation Beijing Forestry UniversityBeijing 100083China Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumqi 830011China Tarim Branch PetroChina Company LimitedKorla 841000China

Site types of the afforestation region of the shelter-forest ecological project along the Tarim Desert Highway were classified based on the natural conditions and windblown sand damages. The extremely severe environment, the irrigation with saline water, and large-scale linear project makes this classification of site types most unique and significant. It adopted a three-level classification system integrating the dominant factors and restrictive factors in regard to their impacts on plant survival and growth as well as on the protective property. Six site type districts were classified based on the medium-scale geomorphic unit, the windblown sand damages, and the major production facilities; 21 site type groups were obtained according to the small-scale geomorphic type, terrain, and wind regime; 36 site types were further classified based on the salt contents of the underground water and soil types. Especially, in this study, spatial distribution of the six site type districts along the desert highway is continuous, which is unique and different from that of most other classifications. In addition, the salt-stress tolerance threshold of the main afforestation plant species to underground water have been set to 8 g/L and 15 g/L according to selective breeding tests and the salinity spatial distribution of the underground water. Thus, the underground water with salinity lower than 8 g/L is defined as light saline water in this area.

关键词： Tarim Desert Highway shelter-forest site type classification saline water Xinjiang afforestation

“可持续生计”框架下欠发达地区乡村振兴推进策略研究--以甘肃省为例

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甘肃行政学院学报 2020年第5期 103-112,127,128页

作者：李秉文中共甘肃省委党校(甘肃行政学院)决策咨询部兰州730070

欠发达地区乡村振兴不仅是我国经济健康发展的重要动力,也是构建新发展格局的重要途径。基于“可持续生计”框架,借鉴平衡计分卡思想,开发出乡村振兴实施基础测量量表,并以甘肃为例进行实证分析。结果表明:乡村振兴的实施基础在资产和... 详细信息

欠发达地区乡村振兴不仅是我国经济健康发展的重要动力,也是构建新发展格局的重要途径。基于“可持续生计”框架,借鉴平衡计分卡思想,开发出乡村振兴实施基础测量量表,并以甘肃为例进行实证分析。结果表明:乡村振兴的实施基础在资产和收入等直接效果以及管理策略、能力和文化素养等长远发展因素方面需进一步夯实,由此构建“五角星”模式,从改善乡村振兴环境、践行“以人民为中心”思想、扩展振兴资本、提升发展能力、形成多元参与机制等策略方面入手,推进欠发达地区乡村振兴。

关键词：乡村振兴 “可持续生计”框架 “五角星”模式自我发展能力欠发达地区

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西部地区城乡一体化发展程度评价研究

中国农业资源与区划 2012年第3期33卷 65-69页

作者：李秉文甘肃行政学院经济教研部

由于历史、自然、人文环境等多重因素的制约,西部地区城乡发展差距大、农村贫困率高。这种状况既制约着西部地区本身的发展,同时也对全国城乡一体发展带来负面影响。通过运用层次分析与头脑风暴、理论分析与实证研究、定性分析与定量评... 详细信息

由于历史、自然、人文环境等多重因素的制约,西部地区城乡发展差距大、农村贫困率高。这种状况既制约着西部地区本身的发展,同时也对全国城乡一体发展带来负面影响。通过运用层次分析与头脑风暴、理论分析与实证研究、定性分析与定量评价相结合等方法,构建出西部地区城乡一体发展的评价指标体系,并对其实现程度进行评价。在此基础上提出了西部地区推进城乡一体发展的建议。

关键词：城乡一体化评价指标体系层次分析法西部地区

The Role of Tertiary Butyl Anion and Water in the Water-Assisted Pd（OAc）2-Catalyzed C-C bond Formation: A DFT Study

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The Role of Tertiary Butyl Anion and Water in the Water-Assi...

中国化学会第十二届全国量子化学会议

作者： bingwen li Yuxia liu Siwei Bi School of Chemistry and Chemical Engineering Qufu Normal University

The tertiary butyl anion in the reaction plays a crucial role for C=C bond *** clear why the additionally added water can accelerate the *** addition,the carbonyl unit in the alkene is confirmed to be vital for the av...

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农业税减免后的分税制完善问题思考

甘肃行政学院学报 2006年第2期 64-66页

作者：李秉文西北师范大学甘肃兰州730010

分税制推行十多年来,在发挥很大积极作用的同时也暴露出一些弊端。随着政府经济、政治等体制方面改革的深入,尤其是农业税减免后,现行分税制的完善问题势在必然。主要是解决旧体制中财权事权不统一、税务征管成本太高等问题。

关键词：分税制税权农业税

基于植物防沙工程的沙产业技术进展--以肉苁蓉种植产业为例

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中国科学院院刊 2020年第6期35卷 717-723页

作者：范敬龙李丙文徐新文李生宇中国科学院新疆生态与地理研究所塔克拉玛干沙漠研究站库尔勒841000 中国科学院新疆生态与地理研究所莫索湾沙漠研究站石河子832000 中国科学院新疆生态与地理研究所国家荒漠-绿洲生态建设工程技术研究中心乌鲁木齐830011 中国科学院大学北京100049

沙产业的内涵是在防沙治沙中有效利用沙漠资源,拓展节能绿色农业型产业空间。文章从植物防沙工程中寄生药用植物的模式出发,探讨了肉苁蓉种植产业的技术进展,重点对肉苁蓉产业发展趋势和种植技术的突破进行了简要阐述,并分析和计算了肉... 详细信息

沙产业的内涵是在防沙治沙中有效利用沙漠资源,拓展节能绿色农业型产业空间。文章从植物防沙工程中寄生药用植物的模式出发,探讨了肉苁蓉种植产业的技术进展,重点对肉苁蓉产业发展趋势和种植技术的突破进行了简要阐述,并分析和计算了肉苁蓉种植产业的经济效益,最后对肉苁蓉种植技术的推广应用及发展前景进行了展望。

关键词：沙产业寄生植物药用植物肉苁蓉