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Advanced biosensing technologies for monitoring of agriculture pests and diseases:A review
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作者 Jiayao He Ke Chen +2 位作者 xubin pan Junfeng Zhai Xiangmei Lin 《Journal of Semiconductors》 EI CAS CSCD 2023年第2期57-65,共9页
The threat posed to crop production by pests and diseases is one of the key factors that could reduce global food security.Early detection is of critical importance to make accurate predictions,optimize control strate... The threat posed to crop production by pests and diseases is one of the key factors that could reduce global food security.Early detection is of critical importance to make accurate predictions,optimize control strategies and prevent crop losses.Recent technological advancements highlight the opportunity to revolutionize monitoring of pests and diseases.Biosensing methodologies offer potential solutions for real-time and automated monitoring,which allow advancements in early and accurate detection and thus support sustainable crop protection.Herein,advanced biosensing technologies for pests and diseases monitoring,including image-based technologies,electronic noses,and wearable sensing methods are presented.Besides,challenges and future perspectives for widespread adoption of these technologies are discussed.Moreover,we believe it is necessary to integrate technologies through interdisciplinary cooperation for further exploration,which may provide unlimited possibilities for innovations and applications of agriculture monitoring. 展开更多
关键词 precision agriculture biosensors CROPS disease and pest management
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中国荒漠化潜在发生区域150年变迁:过去、现在和未来
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作者 蔡依霏 王锋 +3 位作者 潘绪斌 张方敏 任国玉 卢琦 《科学通报》 EI CAS CSCD 北大核心 2024年第31期4637-4650,共14页
土地荒漠化是影响人类生存和发展的全球性重大生态问题,我国也是世界上荒漠化最严重的国家之一.当前中国荒漠化潜在发生区域是否发生变化及近百年来变化规律尚不清楚,很多研究对未来干旱的预测忽略了CO_(2)对潜在蒸散的影响,高估了未来... 土地荒漠化是影响人类生存和发展的全球性重大生态问题,我国也是世界上荒漠化最严重的国家之一.当前中国荒漠化潜在发生区域是否发生变化及近百年来变化规律尚不清楚,很多研究对未来干旱的预测忽略了CO_(2)对潜在蒸散的影响,高估了未来荒漠化扩张的趋势.本研究基于《联合国防治荒漠化公约》对荒漠化发生区域的定义,考虑未来CO_(2)浓度增加对潜在蒸散的影响,利用高分辨率格点气象数据(CRU TS4.06)以及第六次国际耦合模式比较计划(CMIP6)的10个全球气候模式数据,分析了当前中国荒漠化潜在发生区域空间分布、过去120年的演变规律和未来30年变化趋势.研究表明:(1)以1991~2020年为基准期,中国荒漠化潜在发生区域约为480万km^(2),约占全国陆域面积的50%.(2)过去120年(1901~2020年)中国荒漠化潜在发生区域总面积呈先减小后增加的趋势,变化转折点发生在1978年;气候整体转向更湿润,潜在发生面积减少3.5万km^(2).(3)未来从低到高3种排放强度下,到2050年中国荒漠化潜在发生区域面积相比现状分别下降5.51%、4.70%和3.73%,随排放强度增加荒漠化潜在发生区域面积变大;未来整体气候转向更湿润,不考虑CO_(2)浓度增加的影响,会高估荒漠化潜在发生区域的面积.综上所述,预计未来中国荒漠化潜在发生区域的面积将减少,但我国仍有接近一半的国土面临潜在的荒漠化风险,维持较低的排放强度有助于降低荒漠化潜在发生区域的面积. 展开更多
关键词 荒漠化 气候变化 潜在蒸散 排放强度 PENMAN-MONTEITH公式
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Environmental deterioration of farmlands caused by the irrational use of agricultural technologies
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作者 xubin pan Zhongkui Luo Yongbo Liu 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2016年第4期3-5,共3页
Without considering the ecosystem-depen- dence of agricultural production, irrational use of agricultural technologies could bring only short-term economic benefits but leave long-term environmental deterioration. If ... Without considering the ecosystem-depen- dence of agricultural production, irrational use of agricultural technologies could bring only short-term economic benefits but leave long-term environmental deterioration. If some agricultural lands have to be abandoned because of these technologies such as chemical films or groundwater depletion, it will aggravate the burden of remaining lands for maintaining or enhancing production. Thus, agricultural production should be a part of public services, requiring the consideration of interests of different stakeholders and sustainability. 展开更多
关键词 agricultural film groundwater exploitation food security environmental cost
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Two-step sampling can produce triphasic species-area relationship
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作者 xubin pan 《Journal of Plant Ecology》 SCIE CSCD 2021年第4期673-678,共6页
Aims It is important to explore the underlying mechanisms that cause triphasic species–area relationship(triphasic SAR)across different scales in order to understand the spatial patterns of biodiversity.Methods Inste... Aims It is important to explore the underlying mechanisms that cause triphasic species–area relationship(triphasic SAR)across different scales in order to understand the spatial patterns of biodiversity.Methods Instead of theory establishment or field data derivation,I adopted a data simulation method that used the power function of SAR to fit log-normal distribution of species abundance.Important Findings The results showed that one-step sampling caused biphasic SAR and n-step sampling could cause 2n-phasic SAR.Practical two-step sampling produced triphasic SAR due to the Preston and Pan effects in large areas.Furthermore,before exploring biological or ecological mechanisms for the nature phenomenon,we should identify or exclude potential mathematical,statistical or sampling reasons. 展开更多
关键词 log-normal distribution power function of SAR species abundance distribution one-step sampling mathematical induction
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Dynamic behavior of stormwater quality parameters in South Texas
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作者 xubin pan Jingyi ZHANG +1 位作者 Wei-Ta FANG Kim D.JONES 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2012年第6期825-830,共6页
To control water impairment in urban storm- water, it is important to evaluate changing patterns of water quality parameters in stormwater runoff. Thus, the authors performed a series of experiments to investigate the... To control water impairment in urban storm- water, it is important to evaluate changing patterns of water quality parameters in stormwater runoff. Thus, the authors performed a series of experiments to investigate the dynamics of common water parameters during storm events in semi-arid areas, with multiple samples collected and analyzed in field stormwater applications. At this field monitoring site within McAuliffe Park, McAllen, Texas, in the United States, a storm event increased the concentra- tions of Escherichia coli (E. coli), but this event represented a decreasing trend over the entire event period. Besides, peak intensity of different pollutants in the stormwater runoff occurred at different times other than at any peak flows, representing a complexity of the temporal and spatial measurements. Multi-sample per- event approaches recommended based on the complexity of the hydrograph and different peak intensity times of pollutants. In addition, high bacteria and total suspended solids (TSS) concentrations in the initial stage of the storm event should be considered when designing Best Manage- ment Practices (BMPs) and Low Impact Developments (LIDs). New strategies and solutions for addressing ecohydrological challenges should be proposed to avoid collateral damages to their both common wealth in ecosystems and human well-beings. 展开更多
关键词 event mean concentration first flush multi-sample per event ECOHYDROLOGY
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Qualitative tool for designing natural protected areas and ecological restoration projects
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作者 xubin pan 《Ecosystem Health and Sustainability》 SCIE 2019年第1期181-184,I0018,共5页
The rotational symmetry connection between the Species-Area Relationship(SAR)and Endemics-Area Relationship(EAR)was discovered in the frame of Species-Area Theory.In this paper,this paired connection was applied into ... The rotational symmetry connection between the Species-Area Relationship(SAR)and Endemics-Area Relationship(EAR)was discovered in the frame of Species-Area Theory.In this paper,this paired connection was applied into the impact of variation of number of species and area and dynamic change of species-abundance distribution on the curve shape of SAR and EAR,which can be integrated into the assessment of Natural Protected Areas and Ecological Restoration Projects.The results indicate that the underestimate or overestimate of total number of species can lead to the underestimate or overestimate of extinction rate,while the reduction or expansion of area can lead to the increase or decrease in extinction rate.In addition,the species-abundance distribution change of community causes the shape tuning of SAR and EAR,which leads to inconsistent change of extinction rate.Thus,this SAT frame can be used as a qualitative tool in conservation and restoration management. 展开更多
关键词 Rotational symmetry extinction rate speciesabundance distribution Pan effect DISTURBANCE
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