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| 1 | Spatial patterns and driving forces of land use change in China during the early 21st century显示文摘Land use and land cover change as the core of coupled human-environment systems has become a potential field of land change science (LCS) in the study of global environmental change. Based on remotely sensed data of land use change with a spatial resolution of 1 km × 1 km on national scale among every 5 years, this paper designed a new dynamic regionalization according to the comprehensive characteristics of land use change including regional differentiation, physical, economic, and macro-policy factors as well. Spatial pattern of land use change and its driving forces were investigated in China in the early 21st century. To sum up, land use change pattern of this period was characterized by rapid changes in the whole country. Over the agricultural zones, e.g., Huang-Huai-Hai Plain, the southeast coastal areas and Sichuan Basin, a great proportion of fine arable land were engrossed owing to considerable expansion of the built-up and residential areas, resulting in decrease of paddy land area in southern China. The development of oasis agriculture in Northwest China and the reclamation in Northeast China led to a slight increase in arable land area in northern China. Due to the 'Grain for Green' policy, forest area was significantly increased in the middle and western developing regions, where the vegetation coverage was substantially enlarged, likewise. This paper argued the main driving forces as the implementation of the strategy on land use and regional development, such as policies of 'Western Development', 'Revitalization of Northeast', coupled with rapidly economic development during this period. | LIU Jiyuan ZHANG Zengxiang XU Xinliang KUANG Wenhui ZHOU Wancun ZHANG Shuwen LI Rendong YAN Changzhen YU Dongsheng WU Shixin JIANG Nan | 2010 | Journal of Geographical Sciences2010，20，4： | 154 |
| 2 | Cropland redistribution to marginal lands undermines environmental sustainability显示文摘Cropland redistribution to marginal land has been reported worldwide;however,the resulting impacts on environmental sustainability have not been investigated sufficiently.Here we investigated the environmental impacts of cropland redistribution in China.As a result of urbanization-induced loss of high-quality croplands in south China(~8.5 t ha^(-1)),croplands expanded to marginal lands in northeast(~4.5 t ha^(-1)) and northwest China(~2.9 t ha^(-1)) during 1990-2015 to pursue food security.However,the reclamation in these low-yield and ecologically vulnerable zones considerably undermined local environmental sustainability,for example increasing wind erosion(+3.47%),irrigation water consumption(+34.42%),fertilizer use(+20.02%) and decreasing natural habitats(-3.11%).Forecasts show that further reclamation in marginal lands per current policies would exacerbate environmental costs by 2050.The future cropland security risk will be remarkably intensified because of the conflict between food production and environmental sustainability.Our research suggests that globally emerging reclamation of marginal lands should be restricted and crop yield boost should be encouraged for both food security and environmental benefits. | Wenhui Kuang Jiyuan Liu Hanqin Tian Hao Shi Jinwei Dong Changqing Song Xiaoyong Li Guoming Du Yali Hou Dengsheng Lu Wenfeng Chi Tao Pan Shuwen Zhang Rafiq Hamdi Zherui Yin Huimin Yan Changzhen Yan Shixin Wu Rendong Li Jiuchun Yang Yinyin Dou Wenbin Wu Liqiao Liang Bao Xiang Shiqi Yang | 2022 | National Science Review2022，9，1： | 13 |
| 3 | Comparative Studies of Non-noble Metal Modified Mesoporous M-Ni-CaO-ZrO2 (M=Fe, Co, Cu) Catalysts for Simulated Biogas Dry Reforming显示文摘现在的工作被瞄准由增加第二非高贵的金属的干燥改过为 biogas 改进基于 Ni 的催化剂的表演(Fe,公司, Cu ) 进以前学习的 mesoporous Ni-CaO-ZrO 2 nanocomposite。Biogas 为干燥改过反应与相等的甲烷和二氧化碳被模仿。X光检查衍射( XRD ),X光检查光电子光谱学( XPS ), N 2吸附,规划温度的减小( TPR ), thermogravimetric 分析( TGA ),并且传播电子显微镜学( TEM )大小被拿描绘二金属的催化剂以及积累的碳免职的结构、文本的性质。Fe 的增加导致订 Fe-Ni-CaO-ZrO 2 样品的 mesopores 的生长的更少,并且 Cu 的存在在 Cu-Ni-CaO-ZrO 2 导致免费 NiO 的相对更大的部分。与 Fe 和 Cu 相比,公司的存在能高效地形成有益的双金属效果并且提高在 biogas 的催化剂的活动和稳定性弄干改革反应的在因此提高的 Ni 和 CaO-ZrO 2, 之间的强壮的金属支持相互作用。 | Changzhen Wang Yin Zhang Yongzhao Wang Yongxiang Zhao | 2017 | Chinese Journal of Chemistry2017，35，1： | 5 |
| 4 | Change of lake area in the southeastern part of China's Badain Jaran Sand Sea and its implications for recharge sources显示文摘Understanding the relationship between the changes in lake water volume and climate change can provide valuable information to the recharge sources of lake water. This is particularly true in arid areas such as the Badain Jaran Sand Sea, an ecologically sensitive area, where the recharge sources of lakes are heatedly debated. In this study, we determined the areas of 50 lakes(representing 70% of the total permanent lakes in this sand sea) in 1967, 1975, 1990, 2000 and 2010 by analyzing remote-sensing images using image processing and Ar GIS software. In general, the total lake area decreased from 1967 to 1990, remained almost unchanged from 1990 to 2000, and increased from 2000 to 2010. Analysis of the relationship between these changes and the contemporaneous changes in annual mean temperature and annual precipitation in the surrounding areas suggests that temperature has significantly affected the lake area, but that the influence of precipitation was minor. These results tend to support the palaeo-water recharge hypothesis for lakes of the Badain Jaran Sand Sea, considering the fact that the distribution and area of lakes are closely related to precipitation and the size of mega-dunes, but the contemporaneous precipitation can hardly balance the lake water. | Zhi ZHANG ZhiBao DONG ChangZhen YAN GuangYin HU | 2015 | Journal of Arid Land2015，7，1： | 4 |
| 5 | A Hydrogen Sensor Using SrCe_(0.95)Yb_(0.05)O_(3-α) as Proton Conductor and YH_x+YH_(2-z) as Reference Electrode for Determining Hydrogen Pressure in Solid Steel显示文摘The steel contains a small amount of hydrogen which will escape during the heat treatment.The hydrogen pressure in 16MnRE steel was investigated with a hydrogen sensor,which used SrCe0.95Yb0.05O3-α proton conductor as a solid electrolyte,YHx+YH2z as a solid state reference electrode and Ni wire as electrode constructing a hydrogen concentration cell,shown as Ni|YHx+YH2z |SrCe0.95Yb0.05O3-α |[H] steel |Ni.The response time of sensor is less than 10s.The relational expression of hydrogen partial pressure with temperatures was determined using two shape proton conductors.The results showed the regularity in experimental temperature range,and the hydrogen partial pressure increased as its temperature was raised. | Ying Li Changzhen Wang Zhongli Zhang Jiangxin Wang | 2010 | Journal of Materials Science & Technology2010，26，10： | 3 |
| 6 | Oasis Functional Stability Evaluation Based on Multiple Indicators, Northwest China显示文摘We produced and analyzed oasis structure information, and evaluated oasis functional stability using the multiple indicators based on Remote Sensing(RS) and Geographical Information System(GIS) in the arid region of China in 2015. The results showed that the oases area was 193,734 km^2, accounting for 8.17% of the arid region of China. The spatial difference in the functional stability of oases was obvious. The Beijiang zone had the highest functional stability and was relatively stable state, and the Hexi Corridor-Alashan Plateau zone had the lowest functional stability and was relatively unstable. The functional stability is dominated by production and ecological functions, which have regional differences. Increasing oasis agricultural output, strengthening highway infrastructure construction and paying attention to education will become important ways to improve oasis functional stability. Water resources determine the ecological function, thus affecting the oasis functional stability. The results provide references for the formulation of related policies according to local conditions. | LI Sen ZHANG Zhishan WANG Tao YAN Changzhen DU Heqiang | 2020 | Acta Geologica Sinica(English Edition)2020，94，3： | 3 |
| 7 | Boosting performance in attack intention recognition by integrating multiple techniques显示文摘 | Hao Bai (1) david_xiaobai@126.com Kunsheng Wang (2) Changzhen Hu (1) Gang Zhang (2) Xiaochuan Jing (2) | 2011 | Frontiers of Computer Science2011，5，1： | 2 |
| 8 | Software Defect Prediction via Deep Belief Network显示文摘Defect distribution prediction is a mean-ingful topic because software defects are the fundamental cause of many attacks and data loss. Building accurate prediction models can help developers find bugs and prioritize their testing efforts. Previous researches focus on exploring different machine learning algorithms based on the features that encode the characteristics of programs. The problem of data redundancy exists in software defect data set, which has great influence on prediction effect. We propose a defect distribution prediction model (Deep belief network prediction model, DBNPM), a system for detecting whether a program module contains defects. The key insight of DBNPM is Deep belief network (DBN) technology, which is an effective deep learning technique in image processing and natural language processing, whose features are similar to defects in source program. Experiment results show that DBNPM can efficiently extract and process the data characteristics of source program and the performance is better than Support vector machine (SVM), Locally linear embedding SVM (LLE-SVM),and Neighborhood preserving embedding SVM (NPE-SVM). | WEI Hua SHAN Chun HU Changzhen ZHANG Yu YU Xiao | 2019 | Chinese Journal of Electronics2019，28，5： | 2 |
| 9 | Infrared modeling and imaging simulation of midcourse ballistic targets based on strap-down platform显示文摘An infrared(IR) imaging simulation framework based on the strap-down platform is proposed for midcourse ballistic targets. It overcomes the shortcoming of the existing algorithms,which cannot simulate IR imaging from the entire midcourse process. The proposed framework includes three steps, target characteristic modeling, motion modeling, and imaging modeling. In imaging modeling, the staring focal plane is taken into account due to its wide employment. In order to obtain IR images of high fidelity,especially that the fluctuation of the target signal-to-noise ratio(SNR) is reasonably similar to the actual one, this paper proposes an improved IR imaging simulation method. The proposed method considers two critical factors of the pixel plane, occupy-empty ratio and defect elements, which affect the imaging of targets markedly but are neglected in previous work. Finally, the IR image sequence of high fidelity is obtained. And the correlative parameters of simulation can be set according to the given scene. Thus the generated images can satisfy the needs of algorithms validation for tracking and recognition. | Changzhen Qiu Zhiyong Zhang Huanzhang Lu Kaifeng Zhang | 2014 | Journal of Systems Engineering and Electronics2014，25，5： | 2 |
| 10 | Calibration ruler for CW-EPR distance measurement using diradical molecule of rigid structure显示文摘许多试验性的因素和控制不了的因素可以由连续波浪电子在距离测量介绍错误顺磁的回声。处理这个问题,几 C 60 nitroxide diradical 与僵硬结构和明确的分子的尺寸使内收被用作距离刻度统治者。经由增加试验性的系列和偶极的拓宽功能的模拟节目基于距离计算节目的改进分别地,距离刻度方法在象不同溶剂,答案集中,测量温度,和微波力量那样的不同条件下面被开发。作为结果,稳定的距离刻度统治者在 813 的范围以内被建立 ? 。距离刻度效果被评估导致 0.84 的相应距离测量精确 ? 。结果建议非偶极的光谱的拓宽因素的影响能被克服,并且建立试验性并且计算方法对大量状况合适。发达方法将在 biomacromolecular 分析保证更精确、客观的距离测量。 | Guofu Dong Hongyao Wang Jianbo Cong Changzhen Wang Junwang Guo Tong Zhang Jingkui Yang Guoshan Yang Ke Wu | 2015 | Acta Biochimica et Biophysica Sinica2015，47，5： | 1 |
| 11 | Novel high pressure extraction technology 显示文摘 | Zhang Shouqin Zhu Junjie Wang Changzhen | 2004 | International Journal of Pharmaceutics2004，278，2： | 1 |
| 12 | Comparative study of big data of global adakites and mineralization-related granite in the Geza arc metallogenic belt, northwest Yunnan, Southwest China显示文摘The Geza arc is an important part of the Sanjiang tectono-magmatic belt and is a newly discovered copper polymetallic ore concentration area in northwest Yunnan province,Southwest China.The area comprises numerous metal ore deposits,including one super-largedeposit,three large deposits,etc.The formation of these deposits was closely related to intermediate–acidic magmatic intrusions.Based on previous studies,the“big data”analysis technique was used for a comparative study of large geochemical datasets of granite related to ore-formation in the Geza porphyry copper deposit and global adakites.As a result,1313 element combinations and 127,765 overlap ratios were obtained.The results show that the Geza porphyry has similar geochemical characteristics to global adakites(the ratios of REE and Ga to major elements are in the range of global adakites).However,theCu,Mo,and Zn contents of the porphyry are significantly higher than those of global adakites,and the porphyry may,therefore,represent an end-member of the global range of adakite composition.In addition,the geochemistry of adakites associated with the porphyry copper deposits overlaps in part with that of global adakites,although most of the data lie outside of the range of global adakites(i.e.lowMn/Cu,Sr/Cu,Na/Cu,and Zr/Cu values,and high Th/Cu,Ba/Cu,Na/Mo,Rb/Mo,Th/Mo,Ta/Mo,Ba/Mo,Mn/Zn,and Ba/Znvalues).The samples with characteristics that deviate significantly from the geochemistry of global adakites show more advanced mineralization and alteration,and a stronger relationship with Cu and Momineralization.The results of geochemical data mining can be used as a prospecting indicator,and provide a new scientific basis for geological prospecting of the deep levels and per-iphery of the Geza Cu polymetallic ore belt. | Liu Xuelong Li Wenchang Zhang Qi Zhang Na Zhang Changzhen Luo Ying Wang Shuaishuai Yang Fucheng Chen Jianhang Li Zhenhuan | 2018 | Big Earth Data2018，2，3： | 1 |
| 13 | Novel high pres-sure extraction technology显示文摘 | ZHANG Shouqin ZHU Junjie WANG Changzhen | 2004 | International Journal of Pharmaceutics2004，27，8： | 1 |
| 14 | High hydrostatic pressure extraction of flavonoids from propolis显示文摘 | Zhang Shouqin Xi Jun Wang Changzhen | 2005 | Journal of Chemical Technology and Biotechnology2005，80，： | 1 |
| 15 | Novel High Pressure Extraction Technology显示文摘 | Zhang Shouqin Zhu Junjie Wang Changzhen | 2004 | INT J Pharm2004，278，： | 1 |
| 16 | Poly (lactic acid)/titanium dioxide composites: Preparation and performance under ultraviolet irradiation显示文摘 | Changzhen Man Chunmei Zhang Yiming Liu Weiwei Wang Wuyang Ren Long Jiang Frederic Reisdorffer Thien Phap Nguyen Yi Dan | 2012 | Polymer Degradation and Stability2012，，6： | 1 |
| 17 | Novel high pressure exraction technology显示文摘 | Zhang Shouqin Zhu Junjie Wang Changzhen | 2004 | International Journal of Pharmaceutics2004，27，8： | 1 |
| 18 | Novel high pressure extraction technology显示文摘 | Zhang Shouqin Zhu Junjie Wang Changzhen | 2004 | International Journal of Pharmaceutics2004，27，8： | 1 |
| 19 | Novel high pressure extraction technology 显示文摘 | Zhang Shouqin Zhu Junjie Wang Changzhen | 2004 | Pharmaceutics2004，27，8： | 1 |
| 20 | Spatial patterns and driving forces of land use change in China during the early 21st century显示文摘 | Jiyuan Liu Zengxiang Zhang Xinliang Xu Wenhui Kuang Wancun Zhou Shuwen Zhang Rendong Li Changzhen Yan Dongsheng Yu Shixin Wu Nan Jiang | | 0，2010，： | 1 |
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