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Sustainable Agriculture Evaluation for Red Soil Hill Region of Southeast China

Pedosphere 2004年第3期14卷 313-321页

作者： zhaoqi-guo XUMeng-Jie InstituteofSoilScience ChineseAcademyofSciences71EastBeijingRd.Nanjing210008（China） DepartmentofPublicManagement NanjingAgriculturalUniversity1WeigangRd.Nanjing210093（China）

Agricultural sustainability for economic development is important and a complex issue throughout the world; however,it is difficult to synthetically evaluate its use in the policy making process. The objective of this study was to evaluate sustainable agriculture in the red soil hill region of Southeast China through a newly proposed method combining four separate sub-systems: regional population (P), resource (R), environmental (E), and socio-economic (S). This new index system was proposed to appraise synthetically the agricultural sustainability of the red soil hill region from 1988 to 1996 with a two-step method assessing: a) the agricultural sustainability in each province independently and b) the relative sustainability of each province to the whole region. The first step only provided a development trend for each province based on its original situation, while the second step provided additional information on the comparative status of each province in agricultural development to the region as a whole. Higher index scores were found for the economy and resource categories denoting improvement. However, lower scores in the environment category indicated the improvement was achieved at the cost of deteriorating ecological surroundings due to an increasing population that demanded more from the agro-ecosystem and put heavier pressures on it. Results also showed that water and soil losses in this region were the major obstacles encountered in sustainable agriculture development. The assessment results were verified when compared with results from another method. This suggested that the new assessment system was reliable and credible in evaluating agricultural sustainability on a regional scale.

关键词： agriculture assessment red soil hill region southeast china sustainability

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Dynamics of Soil Erosion in Xingguo County, China, Determined Using Remote Sensing and GIS

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Pedosphere 2005年第3期15卷 356-362页

作者： PANJian-Jun ZHANGTao-Lin zhaoqi-guo CollegeofResourcesandEnvironmentalSciences NanjingAgriculturalUniversityNanjing2100g5（China）／／InstituteofSoilScienceChineseAcademyofSciencesNanjing210008（China） InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China）

The spatial and temporal dynamics of soil erosion in Xingguo County, Jiangxi Province, China were studied using multi-period remote sensing images and GIS. The results indicated that the soil erosion status of the region has been improving, particularly since the 1980s, with the erosion rate showing an evident decline over the past 30 years. The improvement showed not only in the decline of eroded soil area, but also with the reduction in the extent of erosion. The extent of erosion mainly changed by one level, and the change primarily occurred with the severely or moderately eroded soil types. However, in general, soil erosion was still an overriding problem in the region with some areas becoming more serious, especially those with large quantities of granite.

关键词： GIS remote sensing soil erosion spatial and temporal dynamics Xingguo County

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A New Fusion Technique of Remote Sensing Images for Land Use/Cover

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Pedosphere 2004年第2期14卷 187-194页

作者： WULian-Xi SUNBo ZHOUSheng-Lu HUANGShu-E zhaoqi-guo DepartmentofSurvey EastChinaInstituteofTechnology.Fuzhou344000（China）／E-mail：pkwlx@163com InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China） 3DepartmentofUrbanandResourcesSciences NanjingUniversityNanjing210093（China） MeteorologicalResearchInstituteofJiangxiProvince.-Nanchang330046（China）

In China, accelerating industrialization and urbanization followinghigh-speed economic development and population increases have greatly impacted land use/coverchanges, making it imperative to obtain accurate and up to date iufbimation on changes soas toevaluate their environmental effects. The major purpose of this study was to develop a new method tofuse lower spatial resolution multispectral satellite images with higher spatial resolutionpanchromatic ones to assist in land use/cover *** algorithm of a new fusion method known asedge enhancement intensity modulation (EEIM) was proposed to merge two optical image data sets ofdifferent spectral ranges. The results showed that the EEIM image was quite similar in color tolower resolution multispectral images, and the fused product was better able to preserve spectralinformation. Thus, compared to conventional approaches, the spectral distortion of the fused imageswas markedly reduced. Therefore, the EEIM fusion method could be utilized to fuse remote sensingdata from the same or different sensors, including TM images and SPOT5 panchromatic images,providing high quality land use/cover images.

关键词： EEIM fusion land cover land use remote sensing spectral preservation

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Revealing the correlation between adsorption energy and activation energy to predict the catalytic activity of metal oxides for HMX using DFT

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Defence Technology（防务技术） 2024年第1期31卷 262-270页

作者： Xiurong Yang Chi Zhang Wujing Jin zhaoqi guo Hongxu Gao Shiyao Niu Fengqi Zhao Bo Liu Haixia Ma Xi'an Key Laboratory of Special Energy Materials School of Chemical EngineeringNorthwest UniversityXi'an710069China Science and Technology on Combustion and Explosion Laboratory Xi'an Modern Chemistry Research InstituteXi'an710065China Rocket Force University of Engineering Xi'an 710025China

Traditional selection of combustion catalysis is time-consuming and *** calculation is expected to resolve this *** adsorption energy of HMX and O atoms on 13 metal oxides was calculated using DMol3,since HMX and O are key substances in decomposition *** the relationship between the adsorption energy of HMX,O on metal oxides(TiO_(2),Al_(2)O_(3),PbO,CuO,Fe_(2)O_(3),Co_(3)O_(4),Bi_(2)O_(3),NiO)and experimental T30 values(time required for the decomposition depth of HMX to reach 30%)was depicted as volcano ***,the T30 values of other metal oxides was predicted based on their adsorption energy on volcano plot and validated by previous experimental ***,the adsorption energy of HMX on ZrO_(2)and MnO_(2)was predicted based on the linear relationship between surface energy and adsorption energy,and T30 values were estimated based on volcano *** apparent activation energy data of HMX/MgO,HMX/SnO_(2),HMX/ZrO_(2),and HMX/MnO_(2)obtained from DSC experiments are basically consistent with our predicted T30 values,indicating that it is feasible to predict the catalytic activity based on the adsorption calculation,and it is expected that these simple structural properties can predict adsorption energy to reduce the large quantities of computation and experiment cost.

关键词： Density functional theory HMX Metal oxides Adsorption energy Activation energy

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Crystal Structures, Thermal Behavior Analysis and Thermal Safety of Two Energetic Salts of Hydrazinyl-1,2,4,5-tetrazine with 3,5-Dinitrosalicylic Acid

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Chemical Research in Chinese Universities 2018年第6期34卷 959-964页

作者： CHEN Xiang ZENG Tian guo zhaoqi LI Shuailei MAI Tao GAO Rong MA Haixia School of Chemieal Engineering Northwest University Xi 'an 710069 P. R. China College of Chemistry and Materials Science Northwest University Xi 'an 710069 P. R. China

Two energetic salts, ***-H20（1） and DHT.2DNS.2H20（2）[DPHT=3-（3,5-dimethyl-lH-pyrazol- 1-yl）-6-hydrazinyl-1,2,4,5-tetrazine; DHT=3,6-dihydrazinyl-l,2,4,5-tetrazine], were synthesized from S-tetrazine with 3,5-dinitrosalicylic acid（DNS）. Compounds 1 and 2 were structurally characterized by elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction. The thermal behavior of the title compounds was studied by differential scanning calorimetry（DSC） and thermogravimetry（TG）. The non-isothermal decomposition kinetics of compound 2 were investigated. The self-accelerating decomposition temperature, thermal ignition temperature, and critical temperatures of thermal explosion were obtained to evaluate the thermal safety of compound 2. The results show compounds 1 and 2 decompose at 150.8 and 179.2℃, respectively. The TSADT and Tb of compound 2 are higher than those of DHT, which indicates compound 2 is a potential candidate for energetic materials that have good thermal stability. Keywords Tetrazine compound; Dinitrosalicylic acid（DNS）; Crystal structure; Thermal behavior; Thermal safety

关键词： Tetrazine compound Dinitrosalicylic acid(DNS) Crystal structure Thermal behavior Thermal safety

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A strategy based on water soluble coal tar pitches to construct MnO_(2)@C composite materials with high electrochemical performance

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Science China(Technological Sciences) 2024年第1期67卷 311-320页

作者： LIU Bo WANG Kun guo zhaoqi HAN BeiBei XU GuiYing JU DongYing AN BaiGang LI YongCheng NI ZhenYong ZHOU WeiMin Key Laboratory of Energy Materials and Electrochemistry Research Liaoning Province University of Science and Technology LiaoningAnshan 114051China Advanced Science Research Laboratory Saitama Institute of TechnologyFusaiji 1690Japan Liaoning Starry Sky Sodium Battery Co. Ltd.Anshan 114051China Sinosteel Anshan Research Institute of Thermo-Energy Co. Ltd.Anshan 114051China State Key Laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China

The water soluble coal tar pitches(WS-CTPs)were successfully prepared and used to construct the MnO_(2)@C composite materials by a hydrothermal *** is interestingly observed that the structures and morphologies of MnO_(2)@C materials can be controlled by controlling the dosages of WS-CTPs and ***,it is aware that MnO_(2)exists in the MnO_(2)@C materials in an amorphous *** with MnO_(2),MnO_(2)@C materials output a remarkable improvement in electrochemical *** instance,MnO_(2)@C-0.3 shows the storage capacity at 965.7 mA h g^(−1)after 300 cycles at a current density of 0.1 A g^(−1).In addition,after 600 cycles at a current density of 1.0 A g^(−1),the storage capacity of MnO_(2)@C-0.3 still keeps 450.3 mA h g^(−1),indicating that MnO_(2)@C-0.3 owns tremendous cycle stability at a high current *** view of the fact that the coal tar pitches possess great cost advantages,the strategy of using WS-CTPs as a carbon source to cover the metal oxides is a competitive way to expand the application of metal oxides in the fabrication of electrodes of LIBs.

关键词： water soluble coal tar pitches MnO_(2) composite materials lithium ion batteries(LIBs) energy storage systems(ESSs) coal tar pitches

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Spatial and Temporal Variability of N, P and K Balances for Agroecosystems in China

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Pedosphere 2005年第3期15卷 347-355页

作者： SHENRun-Ping SUNBo zhaoqi-guo InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China）／／DepartmentofSpatialInformationScienceNanjingUniversityofInformationScienceandTechnologyNanjing210044（China） InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China）

Nitrogen, phosphorus, and potassium balances for agroecosystems in China from 1993 to 2001 were calculated at national and provincial levels using statistical data and related parameters, and their spatial and temporal variabilities were analyzed with GIS to estimate the potential impacts of nutrient N, P and K surpluses or deficits to soil, water and air. At the national scale, the N and P balances from 1993 to 2001 showed a surplus, with the nitrogen surplus remaining relatively stable from 1997—2001. Although during this period the P surplus pattern was similar to N, it had smaller values and kept increasing as the use of phosphate fertilizer increased year by year. However, K was deficient from 1993 to 2001 even though from 1999 to 2001 the K deficit decreased. The spatial analysis revealed higher N surpluses in the more developed southeastern provinces and lowest in the western and northern provinces where there was less chemical fertilizer input. The serious K deficit mainly occurred in Shanghai and Beijing municipalities, Jiangsu, Zhejiang and Hubei provinces, and Xinjiang autonomous regions. For the years 1992, 1996 and 2001, N surpluses and K deficits had significant positive spatial correlations with per capita gross domestic product (GDP), per capita gross industrial output value, and per capita net income of rural households. This showed that the level of economic development played an important role on nutrient balances in the agroecosystems.

关键词： China economic factors NPK balance spatial and temporal variability

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Temporal-Spatial Variability of Soil Organic Carbon Stocks in a Rehabilitating Ecosystem

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Pedosphere 2004年第4期14卷 501-508页

作者： ZHANGShi-Rong SUNBo zhaoqi-guo XIAOPeng-Fei SHUJian-Ying InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China）. CollegeofResourcesandEnvironment SichuanAgriculturalUniversityYa＇an625014（China）

In global change research, changes of soil organic carbon (SOC) reservoirs intropical and subtropical regions are still unknown. The temporal-spatial variability of SOC stockswas determined in a basin of over 579 km^2 in subtropical China from 1981to 2002. ArcGIS8.l softwarewas utilized for spatial analysis of semivariance, ordinary kriging (OK), and probability kriging(PK). Grid and hierarchical approaches were employed for the sampling scenario in 2002 with 106Global Position System (GPS) established spots sampled. Bulk topsoil samples (0—30 cm) werecollected at three random sites on each spot. The SOC content for 1981 came from the SOC map of theSecond National Soil Survey. Geostatistical results of the nugget to sill ratio (0.215-0.640)in therehabilitating ecosystem indicated a moderate spatial dependence for SOC on this large scale. Therange of SOC changed from 2.04 km in 1981 to 7.15 km in 2002. The mean topsoil SOC increased by 4.6%from 10.63 g kg^(-1) (1981) to 11.12 g kg^(-1)(2002). However, during this 21-year period 25.2% ofthe total basin area experienced a decrease in SOC. Also, the probability kriging results showedthat the geometric mean probabilities of SOC 15.0 gkg^(-1) were 0.188, 0.534 and 0.378, respectively in 2002, comparing to 0.234, 0.416 and 0.234 inthat order in 1981, respectively. The SOC storage in the topsoil increased by 17.0% during this timewith the main increase occurring in forests and cultivated land,which amounted to 82.5% and 17.0%of the total increase, respectively.

关键词： ordinary kriging probability kriging rehabilitating ecosystem soil organiccarbon temporal-spatial variability

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4 ～7 Ring Fluorine Containing Photoelectric Functional Materials:Synthesized from benzo[1,2-b:4,3-b’]dithiophene-4,5-dione

4 ～7 Ring Fluorine Containing Photoelectric Functional Mate...

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中国化学会第十四届全国氟化学会议

作者： Jichao Li zhaoqi guo Haihao Zhang Zhongwei An State Key Laboratory of Fluorine ＆ Nitrogen Chemicals Xi’an Modern Chemistry Research Institute

＜正＞Polycyclic aromatic compounds possess large π-conjugated structure,which resulted some extent molecular rigidity and good thermal *** to the incorporation of fluorine atoms with conjugated skeleton,the fluorina...

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养心汤对心气虚型冠心病不稳定型心绞痛临床疗效观察

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中国社区医师 2018年第15期34卷 104-105页

作者：郭兆奇新疆乌鲁木齐市军干一所卫生室中西医结合内科 830000

目的:探讨养心汤对心气虚型冠心病不稳定型心绞痛的效果。方法:收治心气虚型冠心病不稳定型心绞痛患者186例,对照组给予常规西药治疗,观察组给予西药联合养心汤治疗。结果:观察组治疗总有效率明显高于对照组,观察组治疗后中医症状积分... 详细信息

目的:探讨养心汤对心气虚型冠心病不稳定型心绞痛的效果。方法:收治心气虚型冠心病不稳定型心绞痛患者186例,对照组给予常规西药治疗,观察组给予西药联合养心汤治疗。结果:观察组治疗总有效率明显高于对照组,观察组治疗后中医症状积分明显低于对照组(P<0.05)。结论:为心气虚型冠心病不稳定型心绞痛患者行养心汤治疗,可显著减轻患者症状,提高治疗效果。

关键词：心气虚型冠心病不稳定型心绞痛养心汤中医症状积分

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