This study investigates the multifaceted impacts of climate change on the Midwest region of the United States, particularly the rising temperatures and precipitation brought about by hot weather activities and technol...This study investigates the multifaceted impacts of climate change on the Midwest region of the United States, particularly the rising temperatures and precipitation brought about by hot weather activities and technological advances since the 19th century. From 1900 to 2010, temperatures in the Midwest rose by an average of 1.5 degrees Fahrenheit, which would also lead to an increase in greenhouse gas emissions. Precipitation is also expected to increase due to increased storm activity and changes in regional weather patterns. This paper explores the impact of these changes on urban and agricultural areas. In urban areas such as the city of Chicago, runoff from the increasing impervious surface areas poses challenges to the drainage system, and agriculture areas are challenged by soil erosion, nutrient loss, and fewer planting days due to excessive rainfall. Sustainable solutions such as no-till agriculture and the creation of grassland zones are discussed. Using historical data, recent climate studies and projections, the paper Outlines ways to enhance the Midwest’s ecology and resilience to climate change.展开更多
To study the impact of the COVID-19 pandemic on agricultural carbon emissions in China,the greenhouse gas emissions generated by crop and livestock production,and agricultural material and energy inputs in China from ...To study the impact of the COVID-19 pandemic on agricultural carbon emissions in China,the greenhouse gas emissions generated by crop and livestock production,and agricultural material and energy inputs in China from 2019 to 2021 were systematically calculated.It was found that from 2019 to 2021,Net greenhouse gas emissions(NGHGE)from agriculture in China had an increasing trend.Methane emissions ranked first in NGHGE,with an annual proportion exceeding 65%and an increasing annual trend.CH_(4)emissions were primarily influenced by enteric fermentation and rice production.Nitrous oxide emissions accounted for around 22%of annual NGHGE and decreased from 2019 to 2021.The main sources of N_(2)O emissions were the use of nitrogen fertilizers and manure management.Carbon dioxide emissions accounted for about 18%annually,with diesel and agricultural electricity use contributing to over 60%of CO_(2)emissions.Soil carbon sequestration represented about a 6.1%lowering of NGHGE.The combined proportion of CH4 emissions from enteric fermentation and rice production accounted for over 50%of total GHG emissions.The changes in NGHGE were mainly caused by disturbance of the livestock industry during the pandemic.展开更多
应用政府间气候变化专门委员会（intergovernmental panel on climate change,IPCC）推荐方法计算稻田不同技术组合温室气体排放量和单项技术减排潜力,运用边际减排成本曲线确定区域内由基准模式向最（次）优减排模式转化的相应成本,对...应用政府间气候变化专门委员会（intergovernmental panel on climate change,IPCC）推荐方法计算稻田不同技术组合温室气体排放量和单项技术减排潜力,运用边际减排成本曲线确定区域内由基准模式向最（次）优减排模式转化的相应成本,对稻田温室气体减排不同技术组合的成本-收益进行评估,确定成本有效性减排技术组合和区域内不同减排技术组合转化的边际减排成本。研究表明：（1）稻田土壤是最大排放源,其次是氮肥直接和间接排放。优化灌溉技术、氮素来源、轮作方式以及开展秸秆还田可降低水稻种植周期温室气体排放1.52%～40.17%,最大减排潜力来自于灌溉技术与模式选择差异;（2）以浙江省台州市黄岩区为例,以＂淹水灌溉＋化肥＋秸秆燃烧＂作为基准技术组合,由基准技术组合模式转向4种＂低排放＂技术组合模式的影子价格为1.63～9.79元·kg^-1CO2当量,＂淹水灌溉＋化肥＋秸秆移走（作建筑材料）＂技术组合模式最具成本有效性。展开更多
文摘This study investigates the multifaceted impacts of climate change on the Midwest region of the United States, particularly the rising temperatures and precipitation brought about by hot weather activities and technological advances since the 19th century. From 1900 to 2010, temperatures in the Midwest rose by an average of 1.5 degrees Fahrenheit, which would also lead to an increase in greenhouse gas emissions. Precipitation is also expected to increase due to increased storm activity and changes in regional weather patterns. This paper explores the impact of these changes on urban and agricultural areas. In urban areas such as the city of Chicago, runoff from the increasing impervious surface areas poses challenges to the drainage system, and agriculture areas are challenged by soil erosion, nutrient loss, and fewer planting days due to excessive rainfall. Sustainable solutions such as no-till agriculture and the creation of grassland zones are discussed. Using historical data, recent climate studies and projections, the paper Outlines ways to enhance the Midwest’s ecology and resilience to climate change.
基金sponsored by the Kunshan Municipal Government Research Funding(23KKSGR023).
文摘To study the impact of the COVID-19 pandemic on agricultural carbon emissions in China,the greenhouse gas emissions generated by crop and livestock production,and agricultural material and energy inputs in China from 2019 to 2021 were systematically calculated.It was found that from 2019 to 2021,Net greenhouse gas emissions(NGHGE)from agriculture in China had an increasing trend.Methane emissions ranked first in NGHGE,with an annual proportion exceeding 65%and an increasing annual trend.CH_(4)emissions were primarily influenced by enteric fermentation and rice production.Nitrous oxide emissions accounted for around 22%of annual NGHGE and decreased from 2019 to 2021.The main sources of N_(2)O emissions were the use of nitrogen fertilizers and manure management.Carbon dioxide emissions accounted for about 18%annually,with diesel and agricultural electricity use contributing to over 60%of CO_(2)emissions.Soil carbon sequestration represented about a 6.1%lowering of NGHGE.The combined proportion of CH4 emissions from enteric fermentation and rice production accounted for over 50%of total GHG emissions.The changes in NGHGE were mainly caused by disturbance of the livestock industry during the pandemic.
文摘应用政府间气候变化专门委员会（intergovernmental panel on climate change,IPCC）推荐方法计算稻田不同技术组合温室气体排放量和单项技术减排潜力,运用边际减排成本曲线确定区域内由基准模式向最（次）优减排模式转化的相应成本,对稻田温室气体减排不同技术组合的成本-收益进行评估,确定成本有效性减排技术组合和区域内不同减排技术组合转化的边际减排成本。研究表明：（1）稻田土壤是最大排放源,其次是氮肥直接和间接排放。优化灌溉技术、氮素来源、轮作方式以及开展秸秆还田可降低水稻种植周期温室气体排放1.52%～40.17%,最大减排潜力来自于灌溉技术与模式选择差异;（2）以浙江省台州市黄岩区为例,以＂淹水灌溉＋化肥＋秸秆燃烧＂作为基准技术组合,由基准技术组合模式转向4种＂低排放＂技术组合模式的影子价格为1.63～9.79元·kg^-1CO2当量,＂淹水灌溉＋化肥＋秸秆移走（作建筑材料）＂技术组合模式最具成本有效性。
