Search scope:
排序： Display mode:
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。
Scientific Verification Is the Basis for Correct Decisionmaking of Major Project
Pan Jiazheng,Wang Jiazhu
Strategic Study of CAE 2001, Volume 3, Issue 3, Pages 21-26
The Three Gorges Project is the largest multi-purpose hydro-development project ever built in China and so in the world. The re-verification on TGP undertaken by 412 Chinese experts from 1986 to 1989, laid the foundation for the execution of the project construction. Since 1993, the construction has been commenced and proceeded smoothly according to the approved general schedule. The project investment is well controlled within the approved estimates of the preliminary design. The quality of the work already completed is satisfactory to the design requirements. Several important conclusions drawn from the re-verification have been proved preliminarily to be correct. And a series of major technical challenges, such as river closure of the grand channel, the construction of the deen water cofferdam, the excavation stability of the permanent ship lock with high slope, and the extremely high intensive concrete placement, have been met. The practice has fully proved the necessity and correctness of the previous scientific verification.
Keywords： scientific verification Three Gorges Project practical proof
The Skyscraper Crop Factory: A Potential Crop-Production System to Meet Rising Urban Food Demand Perspective
Li Zhang, Lan Huang, Tao Li, Tao Wang, Xiao Yang, Qichang Yang
Engineering 2023, Volume 31, Issue 12, Pages 70-75 doi: 10.1016/j.eng.2023.08.014
Vertical farming systems, such as sky farms, are a potential type of agricultural system for stable and effective food production. Here, we highlight the potential of the sky farm, denoted as the “skyscraper crop factory” (SCF), for cereal crop production and discuss some nascent technologies that would be applied in this production system. SCFs are ideal crop-production systems for increasing the effective arable area for crops and ensuring food security in times of crises that cause a shock in global trade. They can also provide food in urban areas to meet producers’ and consumers’ demands for the increased nutrition, taste, and safe production of cereal crops. Moreover, as their use can reduce greenhouse gas emissions, SCFs could be a sustainable addition to conventional agricultural crop production.
Keywords： Vertical farming system Cereal crop production Plant factory technology Skyscraper crop factory
Chen Changli
Strategic Study of CAE 2003, Volume 5, Issue 10, Pages 14-19
It is a basic strategy project for developing west China to introduce sea water from Bohai Sea to west China, comparing to the project on introducing fresh-water from Yangtze River to north China. Some efficacy for Inner Mongolia area and saltization in areas involred in the project were discussed in the paper. As it may take 20 years to get a common view about the project conducting some relaed scientific research and striving to begin earlier the project were suggested.
Keywords： introducing sea water from Bohai Sea to west China developing west China sandstorm groundwater
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
He Yegang,Zhou Yuan
Strategic Study of CAE 2013, Volume 15, Issue 6, Pages 99-107
This article predicts the trends of container throughputs in Shanghai Port for the coming decades by analyzing historical data. According to the requirements of Chinese economic development and domestic and international ports' competition, the necessity of constructing the Hengsha new deepwater port is expounded. In the meantime, the feasibility of building the Hengsha new deepwater port is stated.
Keywords： the Hengsha deepwater newport container throughputs Shanghai Port
Coal to gas single cell protein-contribute to resolving the food crisis of China in future
Cao Chen,Yu Bo and Gu Weidong
Strategic Study of CAE 2015, Volume 17, Issue 3, Pages 107-112
It is predicted that the population of China will be growing to 1.45 billion， the urbanization rate will be 70 % by 2030， the total urban population will be exploded to 1 billion comparing with 0.7 billion urban population of 2013. As the continuously growing of population of China and urban population， China will face severe food crisis， especially the protein shortage problem in future. This paper presents a new theoretical model that by combining non-grid-connected wind power and coal to gas with bioengineering to produce single cell protein to contribute to resolving the food crisis. By combining non-grid-connected wind power and coal to gas with bioengineering to produce single cell protein can not only use the coal resource more efficiently， environmental friendly， but also produce nutrient rich protein for forage and human food.
Keywords： urbanization； food crisis； non-grid wind power； coal-to-gas； single cell protein
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
Prediction of Food Consumption and Grain Demand in Chinese Mainland
Liangjie Xin
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 135-141 doi: 10.15302/J-SSCAE-2018.05.020
Now consumption of main food in Taiwan of China has been stable. It is most likely that Chinese Mainland will follow the progressive path of food consumption in Taiwan of China. The total dietary consumption of Chinese Mainland residents will reach the summit around 2026, so will the consumption of food with high added values, such as fruit, meat, egg, aquatic products, dairy products, and oil. Total dietary consumption will be 563 kg per capita, and grain consumption will be 456 kg per capita. The structure of dietary consumption will reach a table state by 2035, and total dietary consumption and grain consumption will be 499 kg per capita and 412 kg per capita, respectively. Dietary consumption of Chinese Mainland residents has great potentials for promotion, which will exert long and continuous pressure on China’s limited land and water resources.
Strategic Study of CAE 2000, Volume 2, Issue 5, Pages 92-92
Cooperative Research is an Effective Way of Scientific Research in Colleges and Universities
Alec·Nigel·Broers
Strategic Study of CAE 2000, Volume 2, Issue 10, Pages 13-15
Study on Sustainable Development Strategy of Food Crops Industry
Liu Xu,Wang Jimin,Wang Xiudong,Song Lili and Yan Yan
Strategic Study of CAE 2016, Volume 18, Issue 1, Pages 22-33 doi: 10.15302/J-SSCAE-2016.01.004
Food security is important for a country’s prosperity and stability and it is also an important safeguard of steady economy and social development. The study focuses on sustainable development and national food security. Based on the development status of the Chinese food industry, and the problems, development trends, opportunities and challenges of food security, this paper proposes the strategic objectives, strategic ideas, key safeguard measures and policy recommendations to ensure future national food security.
Keywords： food crops sustainable development strategy conception
Developing from Mechanized to Smart Agricultural Production in China
Luo Xiwen, Liao Juan, Zang Ying, Ou Yinggang, Wang Pei
Strategic Study of CAE 2022, Volume 24, Issue 1, Pages 46-54 doi: 10.15302/J-SSCAE-2022.01.005
The mode transformation of agricultural production is a common concern for China and worldwide. Currently, the level of mechanization has been significantly promoted for the agriculture sector in China and smart production becomes an inevitable trend for modern agriculture. Smart agriculture regards data, knowledge, and intelligent equipment as the core elements and integrates modern science and technology with agriculture to realize digital perception, intelligent decision-making, precise operation, and smart management in the entire process of agricultural production, thereby greatly improving labor productivity, resource utilization rate, and land output rate. This article presents the current status of agricultural production in China using rice production as an example, and analyzes the necessity, opportunities, challenges, directions, and route for the intelligent transformation of China’s agriculture. Furthermore, we propose policy suggestions to promote the intelligent development of China’s agricultural production, including (1) strengthening the research and innovation system for agricultural machinery, (2) improving the agricultural machinery promotion system, (3) optimizing the socialized service system for agricultural machinery, and (4) accelerating the construction of smart agriculture demonstration zones.
Keywords： agricultural production rice production agricultural mechanization information technology intelligent agricultural machinery smart agricultural production
Fuzzy Programming Based Modeling of Production Scheduling of Batch Processes
Zhang Hong,Li Chiqiang
Strategic Study of CAE 2004, Volume 6, Issue 10, Pages 65-70
By analyzing certain fuzzy models for production scheduling, the author proposes a general novel fuzzification method based on fuzzy programming for batching production processes and offers a modeling method with fuzzy coefficients. Two fuzzy algorithms based on genetic algorithm, i. e. , fuzzy simulation and SFA algorithm, are adopted to solve the fuzzy model. The selection of membership function is flexible, and a proper expression of fuzziness is adopted. Finally, a numerical example demonstrates that the modeling method is valid.
Keywords： production scheduling fuzzy programming batching production processes membership function
Study on Situations and Sustainable Development Strategies of China’s Fishery Environment
Zhengguo Cui, Keming Qu, Tang Qisheng
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 63-68 doi: 10.15302/J-SSCAE-2018.05.010
A fishery environment is a place on which the survival and reproduction of aquatic lives rely and is the foundation of fishery development. In general, the deterioration of the environmental quality of fishery waters in China has not yet been fundamentally curbed, and dissolved inorganic nitrogen and active phosphate are still the major indicators of pollution in fishery waters. Based on analyses of the status and variation trend of the fishery environment, in this review, we clarify the main factors that affect the sustainable development of China's fishery environment, such as development of construction projects, pollution of external sources, ecological disasters, and pollution accidents; identify major environmental issues in key areas of water; propose the idea of sustainable fishery environment based on green, low-carbon, and environmentally friendly development; establish the overall development goal and the specific development goals of two stages by 2025 and 2030; and put forward suggestions and measures including strictly controlling external pollution and aquaculture self-pollution, delineating the ecological conservation redline, improving the monitoring technology system, strengthening ecological rehabilitation, and implementing innovation projects of the fishery environment in China, hoping to provide references for the protection and management of China's fishery environment.
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
Scientific Verification Is the Basis for Correct Decisionmaking of Major Project
Pan Jiazheng,Wang Jiazhu
Journal Article
The Skyscraper Crop Factory: A Potential Crop-Production System to Meet Rising Urban Food Demand
Li Zhang, Lan Huang, Tao Li, Tao Wang, Xiao Yang, Qichang Yang
Journal Article
Introducing Sea Water from Bohai Sea to West China is a Basic Strategy Project for Developing West China
Chen Changli
Journal Article
Strategies for Soil Fertility Improvement of Arable Land in China
Yingjie Hu, Xiangbin Kong, Yuzhen Zhang
Journal Article
The Hengsha deepwater newport is an important and basic facility to ensure the growth in container throughput of Shanghai Port
He Yegang,Zhou Yuan
Journal Article
Coal to gas single cell protein-contribute to resolving the food crisis of China in future
Cao Chen,Yu Bo and Gu Weidong
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
The Existence of Non Biological Oil and Natural Gas is an Inexhaustible Clean Energy for Human Beings
Journal Article
Cooperative Research is an Effective Way of Scientific Research in Colleges and Universities
Alec·Nigel·Broers
Journal Article
Study on Sustainable Development Strategy of Food Crops Industry
Liu Xu,Wang Jimin,Wang Xiudong,Song Lili and Yan Yan
Journal Article
Developing from Mechanized to Smart Agricultural Production in China
Luo Xiwen, Liao Juan, Zang Ying, Ou Yinggang, Wang Pei
Journal Article
Fuzzy Programming Based Modeling of Production Scheduling of Batch Processes
Zhang Hong,Li Chiqiang
Journal Article
京公网安备 11010502051620号
