Search scope:
排序： Display mode:
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、草田轮作工程、秸秆还田工程和畜禽粪便肥料化利用工程等政策建议。 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
Suggestions for Management and Control of Antibiotics in Farmland Soil in China
Wang Na, Guo Xinyan, Shan Zhengjun, Cai Daoji
Strategic Study of CAE 2021, Volume 23, Issue 1, Pages 167-173 doi: 10.15302/J-SSCAE-2021.01.023
Antibiotics are important for sustaining the livestock and poultry industry in China; however, duo to the agricultural utilization of livestock and poultry manure, the risk of antibiotic resistance transmission becomes increasingly prominent. Therefore, the risk control of antibiotics and antibiotic resistance genes in the farmland soil becomes urgent in China. In this study, we summarizes the status of antibiotic pollution in the farmland soil in China, sorts out the problems regarding the management and control of emerging antibiotic pollutants in farmland soil, and proposes some measures for risk control of the antibiotics and antibiotic resistance genes. This study reveals that the emerging antibiotic pollutants have not been included in soil risk management and more attention should be paid to the pollution risks of the antibiotics and antibiotic resistance genes for the farmland soil. To this end, a strict veterinary drug regulatory mechanism should be established to control the risks from the source. Moreover, standards should be established for controlling antibiotic resistance in organic fertilizers, and technical guidelines should be created for regulating the treatment and application of antibiotics-containing manure, thus to reduce the amount of antibiotic resistance genes that enter into the environment. Meanwhile, human health risks caused by the generation and transfer of environmental antibiotic resistance should be assessed and studied and routine monitoring of antibiotic resistance in farmland soil should be conducted, thereby supporting the risk control of such pollutants using risk assessment.
Keywords： antibiotics antibiotic resistance genes farmland soil transmission risk management and control measures
A Roadmap for Sustainable Agricultural Soil Remediation Under China’s Carbon Neutrality Vision
Fangbai Li, Liping Fang, Fengchang Wu
Engineering 2023, Volume 25, Issue 6, Pages 28-31 doi: 10.1016/j.eng.2022.08.010
Wang Conglu,Wu Chao,Duan Yu
Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 180-183
Referring to GB5618 — 1995 about heavy metal pollution,and using statistical analysis SPSS,the major pollutants of mine area farmland heavy metal pollution were identified by variable clustering analysis.Assessment and classification were done to the mine area farmland heavy metal pollution situation by synthetic principal components analysis (PCA) . The study result implied that variable clustering analysis is efficient to identify the principal components of mine area farmland heavy metal pollution.Sort and clustering were done to the synthetic principal components scores of soil sample, which is given by synthetic principal components analysis. In this paper, data structure of soil heavy metal contaminations, relationships and pollution level of different soil samples were discovered. The results of mine area farmland heavy metal pollution quality assessed and classified with synthetic component scores reflect the influence of both the major and compound heavy metal pollutants. Identification and assessment results of mine area farmland heavy metal pollution can provide reference and guide to propose control measures of mine area farmland heavy metal pollution and focus on the key treatment region.
Keywords： synthetic principal components analysis model mine region soils heavy metal pollution assessment
Rolf Zumsteg, Lars Langmaack
Engineering 2017, Volume 3, Issue 6, Pages 863-870 doi: 10.1016/j.eng.2017.11.006
The history of the formation of the alpine region is affected by the activities of the glaciers, which have a strong influence on underground works in this area. Mechanized tunneling must adapt to the presence of sound and altered rock, as well as to inhomogeneous soil layers that range from permeable gravel to soft clay sediments along the same tunnel. This article focuses on past experiences with tunnel-boring machines (TBMs) in Switzerland, and specifically on the aspects of soil conditioning during a passage through inhomogeneous soft soils. Most tunnels in the past were drilled using the slurry mode (SM), in which the application of different additives was mainly limited to difficult zones of high permeability and stoppages for tool change and modification. For drillings with the less common earth pressure balanced mode (EPBM), continuous foam conditioning and the additional use of polymer and bentonite have proven to be successful. The use of conditioning additives led to new challenges during separation of the slurries (for SM) and disposal of the excavated soil (for EPBM). If the disposal of chemically treated soft soil material from the earth pressure balanced (EPB) drive in a manner that is compliant with environmental legislation is considered early on in the design and evaluation of the excavation mode, the EPBM can be beneficial for tunnels bored in glacial deposits.
Keywords： Soil conditioning Earth pressure balanced shield Slurry shield Mechanized tunneling
Julia E. Vidonish, Kyriacos Zygourakis, Caroline A. Masiello, Gabriel Sabadell, Pedro J. J. Alvarez
Engineering 2016, Volume 2, Issue 4, Pages 426-437 doi: 10.1016/J.ENG.2016.04.005
Thermal treatment technologies hold an important niche in the remediation of hydrocarbon-contaminated soils and sediments due to their ability to quickly and reliably meet cleanup standards. However, sustained high temperature can be energy intensive and can damage soil properties. Despite the broad applicability and prevalence of thermal remediation, little work has been done to improve the environmental compatibility and sustainability of these technologies. We review several common thermal treatment technologies for hydrocarbon-contaminated soils, assess their potential environmental impacts, and propose frameworks for sustainable and low-impact deployment based on a holistic consideration of energy and water requirements, ecosystem ecology, and soil science. There is no universally appropriate thermal treatment technology. Rather, the appropriate choice depends on the contamination scenario (including the type of hydrocarbons present) and on site-specific considerations such as soil properties, water availability, and the heat sensitivity of contaminated soils. Overall, the convergence of treatment process engineering with soil science, ecosystem ecology, and plant biology research is essential to fill critical knowledge gaps and improve both the removal efficiency and sustainability of thermal technologies.
Keywords： Soil decomposition Land reclamation Incineration Pyrolysis Desorption
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。
Zoning of Agricultural Resource and Environment in China
Erqi Xu
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 57-62 doi: 10.15302/J-SSCAE-2018.05.009
Problems in China’s agricultural resources and environment have become increasingly prominent, with distinct resource and environment constraints for regional agricultures. Based on regional differentiation in agricultural resource and environment characteristics, this paper divided the country into 10 first-level zones and 57 second-level zones at the county scale. The first-level zones were divided according to regional differentiation in climate and geotectonic. And the second-level zones differentiate in water resources, land resources, and environmental conditions. It analyzed the agricultural production conditions, types of resources and their different combinations, environmental production conditions, and existing problems in these zones. This study proposed the strategies of “optimizing the spatial layout of eastern, central, and western regions” and “improving Northeast China, regulating North China, and recovering South China”. Twenty-seven second-level zones, undertaking the supply of major agricultural products in China, were identified and labeled as “major agricultural developing regions in China”. The development direction and construction measures of the major agricultural developing regions in China were suggested to maintain and improve the health and sustainability of China’s agricultural production system.
Keywords： 一级区依据气候条件和大地构造的地域分异，二级区根据水资源、土地资源和环境条件问题差异。分析了全国各分区农业生产条件、资源类型及其组合的特点、环境生产条件和存在问题，提出 中国农业资源环境问题日益突出，区域农业资源限制因素和环境制约问题各不相同。依据农业资源环境地域分异，以县域为制图单元，本文将全国划分为10 提高东北，整治华北，恢复南方 战略，并划分了27 个承担主要农产品供给保障功能的 ，指明其建设方向措施，以维护和改善我国农业生产系统的健康和可持续性
Rui Li, Beidou Xi, Yu Jiang, Zheng Xu, Mingxiao Li, Yan Hao, Fanhua Meng, Shaobo Gao, Lei Chen, Lixu Zhu
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 45-51 doi: 10.15302/J-SSCAE-2018.05.007
As the two largest “granaries” in China, the Northeast and Huang-Huai-Hai Plains are the main agricultural producing areas in North China, and the soil environmental risk management and control of these areas are vital to the national food security supply lifeline. This study analyzed the soil heavy metal pollution risks of main agricultural producing areas in North China by the potential ecological risk index method. The high-risk areas of Cd pollution are mainly distributed in Shenyang City in the east of Liaohe Plain, Jinzhou City and Huludao City in the south of Liaohe Plain, Shuangyashan in the Sanjiang Plain, Tianjin City in the Haihe Plain, and Xinxiang City in the southwest of the yellow river flood plain; Hg pollution high-risk areas are mainly distributed in Beijing and Tianjin of the Haihe Plain, and around the Shenyang City of the Liaohe Plain. The chemical industry, followed by the livestock and poultry industry, as well as the metal smelting and processing industry, is the major potential source of heavy metal pollution of soil in the Northeast and Huang-Huai-Hai Plains. This study proposed the “one area, one policy” pollution prevention strategy and key environmental protection projects from the aspects of environment monitoring and warning of agricultural products producing areas, clean production of industrial and mining enterprises, and comprehensive treatment of livestock and poultry pollution, which is based on local conditions and classification guidance. This study can provide important references for the strategic planning of sustainable development of the ecological environment of major agricultural producing areas in North China.
Keywords： 的污染防治战略及重点环保工程。本研究对我国北方主要农产品产地生态环境可持续发展战略规划具有重要参考意义。 污染高风险区域主要集中分布于辽河平原东部的沈阳市、南部的锦州市与葫芦岛市，三江平原双鸭山市，海河平原天津市，以及黄泛平原西南部的新乡市；Hg 污染高风险区域主要分布于海河平原北京市、天津市，辽河平原沈阳市周边化工行业是导致东北及黄淮海平原农产品产地土壤重金属污染的最主要潜在污染源，其次为畜禽养殖业、金属冶炼加工业。本研究从农产品产地环境监测预警、工矿企业清洁生产、畜禽养殖污染综合治理等方面，以因地制宜、分类指导为原则，提出了 ，是北方主要农产品产地，其土壤环境风险管控关系着全国粮食安全供给命脉。本研究通过潜在生态指数法分析了北方主要农产品产地土壤重金属污染风险，研究结果表明，Cd 污染高风险区域主要集中分布于辽河平原东部的沈阳市、南部的锦州市与葫芦岛市，三江平原双鸭山市，海河平原天津市，以及黄泛平原西南部的新乡市
Dani Or: Managed and Natural Soil Structure – Commonalities and Differences（2019.8.22）
23 Apr 2021
Keywords： 环境
Review and Development Strategy of Irrigation with Unconventional Water Resources in China
HuYaqi, Wenyong Wu
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 69-76 doi: 10.15302/J-SSCAE-2018.05.011
With the increasing shortage of water resources, the development and utilization of unconventional water resources have received more and more attention from various countries. Using unconventional water resources to irrigate is one of the important measures to deal with the shortage of water resources. Unconventional water resources mainly include the reclaimed water and brackish water. In China, the agricultural unconventional water resources have relatively high potentials. It has been predicted that the amount of unconventional water available for agriculture will reach 3.438×1010 m3 in 2030 and the irrigation amount of reclaimed water and brackish water will be 1.645×1010 m3 and 2.48×109 m3, respectively. In areas where the fresh water resources are lacking and the unconventional water resources are relatively abundant, especially in the arid area in the north, developing and using unconventional water resources can be regarded as a good solution for the shortage of fresh water. In this paper, based on the situation of China, the irrigation mode of unconventional water resources was summarized. From the aspects of zoning technology, suitable crop classification, pollution identification technology, high-efficient irrigation technique, monitoring and evaluation technology, and integrated application mode, this paper proposes the safe irrigation measures of unconventional water resources in China. Finally, in order to establish a technical system of agricultural unconventional water resources utilization suitable for China, this paper puts forward the development and utilization strategy, which is to further strengthen the technical research and popularization of the agricultural unconventional water resource utilization technology, to improve the recycling standards and regulation system, to bring the unconventional water resources into the planning of water resources development and utilization, and to formulate incentive policies.
Analysis of Data Sets With Different Microwave Remote Sensing Mode in Soil Moisture Retrieval
Yuan Wei,Li Zongqian,Liu Ning
Strategic Study of CAE 2004, Volume 6, Issue 6, Pages 50-56
The scattering coefficient and emissivity are both very sensitive to the moisture content of bare soil surface, which is the essence of measuring soil moisture by using microwave technology. The methods and characters of three microwave remote sensing modes for soil moisture retrieval are discussed in this paper. Firstly, scattering coefficient and emissivity for bare soil surface are calculated based on the theoretical backscattering model BSM. Then the paper analyzes the distribution of isomoisture regions of different data sets, and presents that soil moisture information can be retrieved by using ANN with appropriate input data set.
Keywords： microwave remote sensing soil moisture retrieval remote sensing modes neural network
Yu Jiang, Yuning Yang, Rui Li, Beidou Xi, Mingxiao Li, Yan Hao, Fanhua Meng, Shaobo Gao, Lei Chen
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 142-147 doi: 10.15302/J-SSCAE-2018.05.021
The coordinated development of Beijing, Tianjin, and Hebei is the core strategy of China’s political, economic, scientific, and cultural construction. The environmental protection of regional agricultural producing areas is a strategic location for the battle against pollution. The problem of excessive heavy metals Cd and Hg in the soil of agricultural producing areas is prominent in Beijing and Tianjin, and the pollution risk cannot be ignored. The main causes of soil pollution in the agricultural producing areas in the Beijing–Tianjin–Hebei region are heavy metal pollution by industrial development zones, sewage irrigation, inadequate sewage treatment capacity, imperfect regulations and policies, and backward technical standards. This study proposed to comprehensively deploy a “sky-ground integrated” environment monitoring system for the agricultural producing area, implement the clean production of in-dustrial and mining enterprises, and promote comprehensive strategies of soil pollution prevention and control such as comprehensive management of livestock and poultry pollution. Engineering cases for environmental pollution prevention and control of a pit-pond pollution site and an informal refuse landfill in Tianjin are enumerated to provide references for strategic decisions of soil pollution prevention and control in the Beijing–Tianjin–Hebei agricultural producing areas.
A no Tillage Cultivation System with High Yield and Environment-protecting Functions
Chen Guoping
Strategic Study of CAE 2000, Volume 2, Issue 1, Pages 87-89
Two environment problems that disturbed China have been the sand-storm climate in the spring of northern China and the soil deposition of Yellow River. The key solution depends on the soil-water protection of Huangtu plateau. The plateau keeps poorly forestry and plants. Its climate gets drier. The traditional cultivation system increases the water evaporation and inhibits the full seedling growth, which results in the low and unstable yield.
The no tillage system and mulches with crop stalks can highly preserve the rainfall in summer and autumn of last year, increasing the seedling growth rate yield (17〜40) % . The surface soil can be protected from wind erosion, while in rainy summer, the soil can greatly absorb water and slow down the land surface streams and prevent the soil from being taken into the river.
The water-soil preservation of Huangtu plateau includes the efforts from various department and provinces. It calls for the chairmanship of the council of the state and different department as well as different provinces to spread the no tillage system and solve the problems encountered.
Keywords： no tillage system sand-storm climate soil deposition increase yield
Title Author Date Type Operation
Strategies for Soil Fertility Improvement of Arable Land in China
Yingjie Hu, Xiangbin Kong, Yuzhen Zhang
Journal Article
Suggestions for Management and Control of Antibiotics in Farmland Soil in China
Wang Na, Guo Xinyan, Shan Zhengjun, Cai Daoji
Journal Article
A Roadmap for Sustainable Agricultural Soil Remediation Under China’s Carbon Neutrality Vision
Fangbai Li, Liping Fang, Fengchang Wu
Journal Article
Research of mine farmland heavy metal pollution assessment basedon synthetic principal component analysis model
Wang Conglu,Wu Chao,Duan Yu
Journal Article
Mechanized Tunneling in Soft Soils: Choice of Excavation Mode and Application of Soil-Conditioning Additives in Glacial Deposits
Rolf Zumsteg, Lars Langmaack
Journal Article
Thermal Treatment of Hydrocarbon-Impacted Soils: A Review of Technology Innovation for Sustainable Remediation
Julia E. Vidonish, Kyriacos Zygourakis, Caroline A. Masiello, Gabriel Sabadell, Pedro J. J. Alvarez
Journal Article
The Impact of Cropland Spatial Pattern Change on Grain Production in China
Li Yuanyuan, Tan Minghong, Zhang Hongqi
Journal Article
Soil Pollution Risk Assessment and Comprehensive Prevention Strategy for Major Agricultural Producing Areas in North China
Rui Li, Beidou Xi, Yu Jiang, Zheng Xu, Mingxiao Li, Yan Hao, Fanhua Meng, Shaobo Gao, Lei Chen, Lixu Zhu
Journal Article
Dani Or: Managed and Natural Soil Structure – Commonalities and Differences（2019.8.22）
23 Apr 2021
Conference Videos
Francis Zvomuya: Restoring Degraded Soil Fertility and Improving Crop Productivity: Canadian Experience and Practices (2019.8.22）
23 Apr 2021
Conference Videos
Review and Development Strategy of Irrigation with Unconventional Water Resources in China
HuYaqi, Wenyong Wu
Journal Article
Analysis of Data Sets With Different Microwave Remote Sensing Mode in Soil Moisture Retrieval
Yuan Wei,Li Zongqian,Liu Ning
Journal Article
Soil Pollution Prevention Strategies and Typical Engineering Cases of Agricultural Products Producing Areas in Beijing–Tianjin–Hebei Region
Yu Jiang, Yuning Yang, Rui Li, Beidou Xi, Mingxiao Li, Yan Hao, Fanhua Meng, Shaobo Gao, Lei Chen
Journal Article
京公网安备 11010502051620号
