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The Impact of Cropland Spatial Pattern Change on Grain Production in China
Li Yuanyuan, Tan Minghong, Zhang Hongqi
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 90-95 doi: 10.15302/J-SSCAE-2018.05.014
Cropland is the basis of grain production. In recent decades, the spatial pattern of cropland in China has changed significantly, which has caused some impact on grain production. Based on land cover data of 1990, 2000, and 2010, this study explored changes in the spatial pattern of cropland, and constructed a database with a spatial resolution of 1 km based on county-level agricultural statistics and soil organic matter data, which is the representative of crop productivity. The results show that: during the period from 1990 to 2010, drastic reclamation happened in Northeast and Northwest China while the cropland acreage decreased in Huang-Huai-Hai Plain; the main source of new cropland during the study period was grassland (46.9%), and the lost cropland was mainly converted to forest land (36.6%) in the first ten years and then to construction land (53.0%) in the following ten years; the changes in the spatial pattern of cropland have caused a decrease of 2.0% in the average crop productivity, and during this period, the construction land mostly occupied high-quality cropland, while the newly reclaimed cropland had lower crop productivity.
Keywords： 耕地是粮食生产的基础，近几十年来中国耕地空间格局变化显著，对粮食生产造成一定影响。本研究以1990 年土地覆被数据为基础，探究耕地空间格局变化，并基于县级农业统计数据和土壤有机质数据得到空间分辨率为1 ，在此期间建设用地多占用优质耕地，而新开垦的耕地粮食生产力普遍较低。
Duan Degang,Wang Jin,Wang Tianling,Huang Jing,Li Xin’ge,Zhao Haiqing,You Zhiyu,Yang Ru,Huang Mei and Jian Hongbo
Strategic Study of CAE 2017, Volume 19, Issue 4, Pages 138-144 doi: 10.15302/J-SSCAE-2017.04.022
The efficient use of land is an important concept in ecological civilization construction. Given the objective reality that China's urbanization level is increasing, this paper deeply analyzes the causes behind the increase in the total amount of land being used for construction in villages and the decrease in the efficiency of land being used for construction in villages. The results show that inefficiency of land being used for construction in villages is due to a lack of reasonable planning and guidance regarding the number of villages, homesteads, and collective lands being used for construction. It is therefore proposed that the following strategies be carried out for village land planning: guidance for the development of villages based on different categories; reductions in the total amount of land being used for construction; intensive land usage; optimization of the reserves of land being used for construction; adoption of measures to local conditions, and control of the increasing amount of land being used for construction. This paper uses practical examples to explain the methodology of planning strategies. Finally, it puts forward an institutional guarantee of land planning in village construction. Improving the planning strategy and institutional guarantee can increase the efficiency of land use for construction, thereby promoting ecological civilization construction.
Keywords： land use for village construction inefficient use planning strategy institutional security
Strategies for Soil Fertility Improvement of Arable Land in China
Yingjie Hu, Xiangbin Kong, Yuzhen Zhang
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 84-89 doi: 10.15302/J-SSCAE-2018.05.013
This paper systematically reviews the trends of soil fertility of arable land in China and puts forwards that the soil fertility improvement of arable land in China should realize the strategic change from single application of chemical fertilizer to the combined application of organic and inorganic fertilizers, combine cultivation with preservation to maintain soil fertility, and implement spatial differentiation control. Moreover, this paper summarizes the ways to improve the soil fertility of arable land in China, including increasing the application of organic fertilizer, promoting straw returning to the field, resuming and promoting green manure cultivation, improving the farming conditions, and optimizing the layout of agroforestry networks. At last, this paper proposes policy suggestions of implementing high-standard farmland construction projects, soil improvement and restoration projects, grass-crop rotation projects, straw returning projects, and livestock and poultry manure application projects.
Keywords： 保持土壤肥力，应实行空间差异化管控的战略思路，总结出增施有机肥、推广秸秆还田、恢复推广绿肥种植以及提升农田耕作条件和优化农田林网布局等耕地土壤肥力提升实现途径，提出了国家继续实施高标准农田建设工程、土壤改良修复工程 本文系统梳理了中国耕地土壤肥力变化态势，提出我国耕地土壤肥力提升应实现从单一施用化肥向有机无机肥相结合的战略转变，应
Development of Technology System for High-Quality Manufacturing in China
Lin Zhongqin, Xi Lifeng, Xia Tangbin, Zhao Yixi, Pan Ershun, Li Yanting
Strategic Study of CAE 2022, Volume 24, Issue 2, Pages 1-9 doi: 10.15302/J-SSCAE-2022.02.001
High-quality manufacturing is an innovative model that supports quality transformation and increases high-quality supply, and it is crucial for upgrading China’s manufacturing industry. Studying the technology system and development strategy for highquality manufacturing is significant for boosting China’s manufacturing sector. In this study, we first identify the problems regarding the manufacturing quality development in China and examine the key issues through a four-in-one framework that integrates supply side, demand side, government supervision, and quality infrastructure. Subsequently, we explore the connotation and characteristics of highquality manufacturing, establish a technology system that covers the entire process of design, production, operation, and maintenance, and propose several countermeasures. Our study shows that China’s manufacturing quality still suffers from low quality efficiency, limited international influence of manufacturing brands, and difficulty in quality upgrade of the industrial chain. The technology system we proposed is comprised of quality infrastructure, quality generic technologies, lifecycle quality control technologies, and resource elements. Furthermore, we suggest that China should strengthen the construction of high-quality manufacturing standards system, accelerate the upgrading of industrial chain quality, innovate the quality development mechanism, improve the supply capacity of quality resource elements, achieve breakthroughs in new technologies, and consolidate the quality infrastructure.
Keywords： high-quality manufacturing high-quality development technology system quality infrastructure quality generic technology quality control technology
Discussion on the view of feeding patterns in new era’s family planning services
Yan Xiaoqing
Strategic Study of CAE 2014, Volume 16, Issue 5, Pages 24-30
By selecting 109 cases of infants and their mothers for the survey，the article analyzes general reference volume，the impact of feeding-related factors as well as grass-roots demand for family planning services with SPSS18.0. It builds related people- satisfied websites，explores optimizing service way，explores the scientific and standardized service examination and evaluation system，enhances the grassroots family planning services level.
Keywords： feeding patterns statistical analysis family planning services
Prevention and Control Strategy for the Pollution of Agricultural Plastic Film
Yongmei Xu, Shijie Fang, Xiaopeng Ma, Qianqian Zhu
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 96-102 doi: 10.15302/J-SSCAE-2018.05.015
Coverage and use of agricultural plastic films in China has been increasing year by year, and its use area expands rapidly from west to east. Based on these characteristics, this paper discussed the pollution condition of residual plastic films, the deterioration of soil physicochemical properties caused by residual plastic films, and the risks of ecological environment deterioration. And then four causes of plastic film pollution were summarized. Common PE plastic films are difficult to degrade and are always substandard; the plastic films are difficult to recycle and have a low reuse efficiency; the technology of degradable plastic films is immature; and there is a lack of substitute products and supervision mechanism. On these bases, some control strategies for agricultural plastic film pollution were put forward to provide references for the rational utilization of agricultural plastic films in China. For example, standardized production of the plastic films should be promoted and the national standard of plastic film thickness≥0.01 mm should be strictly enforced; the scientific and rational use of plastic films in the field should be emphasized and the timely film uncovering technology should be promoted; the efficiency of residual film recovery machines should be improved, striving to realize zero residual of plastic films; greater efforts should be devoted to the research and development of degradable plastic films and the field application of degradable plastic films should be popularized.
Keywords： mm
Lane changing assistance strategy based on an improved probabilistic model of dynamic occupancy grids Research Articles
Zhengcai Yang, Zhenhai Gao, Fei Gao, Xinyu Wu, Lei He,gaozh@jlu.edu.cn
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 11, Pages 1492-1504 doi: 10.1631/FITEE.2000439
Keywords： 占用网格；概率模型；换道辅助
Research on the Strategy for Improving Cultivated Land Quality in China
Hongqi Zhang, Minghong Tan, Xiangbin Kong, Yongmei Xu, Erqi Xu, Erping Shang
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 16-22 doi: 10.15302/J-SSCAE-2018.05.003
Based on a systematic analysis of changes in quantity and quality of cultivated land in China, this paper put forward an overall strategic thinking of realizing three strategic transformations in the cultivated land management from the aspects of quantity, quality, and ecology of the cultivated land. Five important measures, including enhancing the cultivated land quantity in China, curbing undisciplined growth of construction land, improving the fertility of cultivated soil, preventing and controlling heavy metal pollution of soil, and preventing and controlling agricultural film pollution, were proposed. It was also recommended that four major projects, namely middle- and low-yield farmland reforms, comprehensive improvement of rural land, comprehensive reparation of heavy metal pollution of soil, and soil and water conservation, sand prevention, and saline soil improvement, should be implemented as soon as possible.
Keywords： cultivated land quality temporal and spatial change strategy major projects
Gan Tingting, Zhao Nanjing, Yin Gaofang, Ma Mingjun, Meng Deshuo, Fang Li, Yang Ruifang, Liu Wenqing
Strategic Study of CAE 2021, Volume 23, Issue 1, Pages 174-184 doi: 10.15302/J-SSCAE-2021.01.024
The Yangtze River Delta is an important industrial and agricultural production base in China. It is significant to pay attention to the heavy metal pollution of agricultural land in the Yangtze River Delta for promoting the healthy development of social economy and for ensuring the safety of ecological environment in China. In this paper, the accumulation and pollution status of typical heavy metals in the agricultural land soil in different regions of the Yangtze River Delta were comprehensively analyzed and the main reasons for the pollution were systematically discussed, according to the heavy metal content data reported in relevant literatures published over the past 20 years. The analysis revealed that due to industrial “three wastes” emissions, transportation, and the extensive use of fertilizers, pesticides, and agricultural films, Cd accumulation and pollution in the agricultural land soil of the entire Yangtze River Delta is the most serious, followed by Cu, Hg and Pb pollution; specifically, Taizhou (in Zhejiang Province) has a compound pollution problem of Cd, Hg, and Cu while Tongling (in Anhui Province) has a compound pollution problem of Cd, Pb, and Cu. To meet the urgent need for the prevention and control of heavy metal pollution in the Yangtze River Delta and considering the main causes of pollution, some suggestions were proposed, including source control, rapid and dynamic monitoring, hierarchical management of agricultural land, research and development of new technologies for soil remediation, and legislation on prevention and control of agricultural land soil pollution. It is hoped that this research can provide a reference for improving the soil ecological environment in the Yangtze River Delta and promoting the sustainable development of a high-quality and efficient agriculture.
Keywords： agricultural land heavy metal pollution prevention Yangtze River Delta
Li Boheng
Strategic Study of CAE 2004, Volume 6, Issue 3, Pages 1-5
There is limited agricultural land but large population in China. Along with the rapid economic development, large area of agricultural land is converted to be nonagricultural use by numerous projects every year. There is obvious conflict between population growth and agricultural land reduction. In order to support sustainable economic development, the Chinese Government has decided to implement the protection system of primary agricultural land. Class 1 and Class 2 of high quality agricultural land is defined based on the detailed rural land survey. These higher quality agricultural lands are listed as primary agricultural land and protected with strict regulations. The primary agricultural land protection system is one of the basic conditions to support sustainable development and prosperity of China.
Keywords： enhance agricultural land protection
Development Status of Fruit Industry in China and Several Problems to Be Studied
Su Huairui
Strategic Study of CAE 2003, Volume 5, Issue 2, Pages 45-48
Fruit germplasm resources, levels of fruit industry, and research status at present in China are desqribed. Discussion lays particular emphasis on (i) realizing modernization and specialization in production of traditional variety groups; (ii) fruit development and construction of ecological environment; (iii) attaching great importance to root system research; (iv) development of fruit processing industry at a suitable speed and on the basis of scientific investigation and paying attention to reasonable combination of large-, mid- and small-scales; (v) establishing an engineering-technic system for production of quality fruits. Concretely, the research should cover variety combination and specialization, breeding ‘ worldwide varieties´ and famous-special-fine varieties, production of nuisanceless fruits via environment protection, putting root system research to aim at sustainable development and fruit quality, nutrition-genotypic root systems, renting genes, forming an engineering-technic system to guarantee fruit quality, knowledge of gradual progress in fruit processing industry, etc.
Keywords： fruit germplasm resources variety combination fruit root system fruit processing engineering-technic system for production of quality fruits
Analysis of the Quality of Daily DEM Generation with Geosynchronous InSAR Article
Zefa Yang, Qingjun Zhang, Xiaoli Ding, Wu Chen
Engineering 2020, Volume 6, Issue 8, Pages 913-918 doi: 10.1016/j.eng.2020.07.003
Up-to-date digital elevation model (DEM) products are essential in many fields such as hazards mitigation and urban management. Airborne and low-earth-orbit (LEO) space-borne interferometric synthetic aperture radar (InSAR) has been proven to be a valuable tool for DEM generation. However, given the limitations of cost and satellite repeat cycles, it is difficult to generate or update DEMs very frequently (e.g., on a daily basis) for a very large area (e.g., continental scale or greater). Geosynchronous synthetic aperture radar (GEOSAR) satellites fly in geostationary earth orbits, allowing them to observe the same ground area with a very short revisit time (daily or shorter). This offers great potential for the daily DEM generation that is desirable yet thus far impossible with space-borne sensors. In this work, we systematically analyze the quality of daily GEOSAR DEM. The results indicate that the accuracy of a daily GEOSAR DEM is generally much lower than what can be achieved with typical LEO synthetic aperture radar (SAR) sensors; therefore, it is important to develop techniques to mitigate the effects of errors in GEOSAR DEM generation.
Keywords： Daily digital elevation model Interferometric synthetic aperture radar Geosynchronous synthetic aperture radar Accuracy analysis
Agricultural Resource Balance and International Import Potential of China by 2050
Zheng Haixia, You Fei, Luo Qiyou, Tang Huajun
Strategic Study of CAE 2022, Volume 24, Issue 1, Pages 20-28 doi: 10.15302/J-SSCAE-2022.01.003
The balance of supply and demand for agricultural resources in China is becoming increasingly tight due to the multiple effects of high-quality agricultural production, transformation and upgrading of food consumption structure, and climate change. Therefore, it is crucial for China to integrate the international and domestic resources and markets to ensure food security in the medium and long term. Based on a comparative analysis of agricultural resources in China and abroad, we investigate food consumption demand, consumption structure, and supply structure in China by 2035 and 2050. The agricultural resource utilization targets for China by 2035 and 2050 are proposed based on an analysis of the agricultural resource supply-demand gap as well as import potentials and sources of virtual water and virtual arable land. We find that the import of virtual arable land by China will reach a peak around 2048, with nearly 6.147×107 hm2. Virtual water imports will reach a peak around 2045. If estimated by blue water, virtual water imports will be 1.136×108 m3, accounting for 30% of the total agricultural water consumption in 2017. The increase in the import potentials of China’s arable land will mainly come from South America and Africa.
Keywords： agricultural resource balance food consumption structure virtual water virtual arable land import potential
Non-Communicable Diseases During the COVID-19 Pandemic and Beyond
Xiong-Fei Pan, Juan Yang, Ying Wen, Naishi Li, Simiao Chen, An Pan
Engineering 2021, Volume 7, Issue 7, Pages 899-902 doi: 10.1016/j.eng.2021.02.013
Study of New Method for the High Yield and Superior Quality of Spirulina
Liu Desheng,Zhuang Huiru,Zheng Lingling,Lin Song,Hu Ningsan
Strategic Study of CAE 2003, Volume 5, Issue 12, Pages 12-18
Spirulina is a kind of the most ancient pronucleus photosynthetic living things. Through many years of multiple points indoor and outdoor experiments and research, it has been proved the application technology of the TA emulsion powder for the promotion of superior quality and high yield of spirulina . In the factory mode of production of spirulina, 0.01〜0.02 mg/L emulsion powder is added into the culture pool. It cannot onlg promote the cell fission of spirulina , the proliferation and growth of spirulina thread, the raise of pure rate of photosynthesis and accumulation of dry substance, but also strengthen the activity of nitric reductase and respiratory intensity of spirulina ,and remarkably increase the content of protein, amino acid, pheophytin β-carotene, chlorophyll and carotenoid. At the same time, it significantly improve the quality and the biological yield of Spirulina. The amount of yield increase can be up to 1.19〜1.76 g/d·m2, the yield increase rate is 20%〜30 % . To apply TA emulsion powder as the cultivation regulator and the cultivation technology is a new creation and the prospect of the application is cheerful.
Keywords： TA emulsion powder spirulina plant growth regulator
Title Author Date Type Operation
The Impact of Cropland Spatial Pattern Change on Grain Production in China
Li Yuanyuan, Tan Minghong, Zhang Hongqi
Journal Article
Research on Planning Strategy for Land Used for Village Construction Based on Ecological Civilization
Duan Degang,Wang Jin,Wang Tianling,Huang Jing,Li Xin’ge,Zhao Haiqing,You Zhiyu,Yang Ru,Huang Mei and Jian Hongbo
Journal Article
Strategies for Soil Fertility Improvement of Arable Land in China
Yingjie Hu, Xiangbin Kong, Yuzhen Zhang
Journal Article
Development of Technology System for High-Quality Manufacturing in China
Lin Zhongqin, Xi Lifeng, Xia Tangbin, Zhao Yixi, Pan Ershun, Li Yanting
Journal Article
Discussion on the view of feeding patterns in new era’s family planning services
Yan Xiaoqing
Journal Article
Prevention and Control Strategy for the Pollution of Agricultural Plastic Film
Yongmei Xu, Shijie Fang, Xiaopeng Ma, Qianqian Zhu
Journal Article
Lane changing assistance strategy based on an improved probabilistic model of dynamic occupancy grids
Zhengcai Yang, Zhenhai Gao, Fei Gao, Xinyu Wu, Lei He,gaozh@jlu.edu.cn
Journal Article
Research on the Strategy for Improving Cultivated Land Quality in China
Hongqi Zhang, Minghong Tan, Xiangbin Kong, Yongmei Xu, Erqi Xu, Erping Shang
Journal Article
A Review on Heavy Metal Pollution of Agricultural Land Soil in the Yangtze River Delta and Relevant Pollution Control Strategy
Gan Tingting, Zhao Nanjing, Yin Gaofang, Ma Mingjun, Meng Deshuo, Fang Li, Yang Ruifang, Liu Wenqing
Journal Article
Enhance the Protection System of Primary Cultivated Land to Promote Sustainable Prosperity of the Chinese Nation
Li Boheng
Journal Article
Development Status of Fruit Industry in China and Several Problems to Be Studied
Su Huairui
Journal Article
Analysis of the Quality of Daily DEM Generation with Geosynchronous InSAR
Zefa Yang, Qingjun Zhang, Xiaoli Ding, Wu Chen
Journal Article
Agricultural Resource Balance and International Import Potential of China by 2050
Zheng Haixia, You Fei, Luo Qiyou, Tang Huajun
Journal Article
Non-Communicable Diseases During the COVID-19 Pandemic and Beyond
Xiong-Fei Pan, Juan Yang, Ying Wen, Naishi Li, Simiao Chen, An Pan
Journal Article
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