The economy of Swaziland is depended on agriculture. In 2009, it was reported that agriculture, forestry, and manufacturing contributed 42% of Swaziland’s Gross Domestic Product (GDP). Besides economic importance, an...The economy of Swaziland is depended on agriculture. In 2009, it was reported that agriculture, forestry, and manufacturing contributed 42% of Swaziland’s Gross Domestic Product (GDP). Besides economic importance, animal agriculture is important for food production and life sustenance. It is also viewed as a symbol of wealth and high social status particularly for the rural folks. Despite the merits of agricultural activities, agricultural production, particularly animal production, has been incriminated for an accelerated emission of greenhouse gases. These gases are responsible for global warming and climate change. The aim of this study was to determine the contribution of animal agriculture to greenhouse gases production and to elicit adaptation strategies to climate change and the role of modern technologies as mitigating measures. The minor and major greenhouse gases produced by farm animals were computed using the IPCC spread sheet for calculation of greenhouse gases emissions. The minor greenhouse gases produced by farm animals were NOx and CO2 and the major gasses included CH4 and N2O. The greenhouse gas that was emitted the most by farm animals was CH4, 24 Gg or 600 CO2e per annum. Ruminants were the major producers of methane. The producers of the least greenhouse gases emissions were non ruminants. Livestock produced 0.87 Gg of N2O per annum, a global warming potential of 259 CO2e. Feeding ammoniated straw and silage inoculating with transgenic rumen bacteria, animal breeding and manure storage techniques, use of biogas digester with methane gas recovery and emphasis on non ruminant production were possible strategies that could be employed to reduce greenhouse gases production from the livestock sector. It was recommended that feed preservation technologies, selection strategies, water harvesting, storage and recycling strategies and intensive livestock production systems could be used as adaptation strategies to climate change in livestock production.展开更多
[Objective] To analyze the positioning of low-carbon agriculture development in local governments of China. [Method] The emissions of green-house gas, the connotation and characteristics of low-carbon agriculture, and...[Objective] To analyze the positioning of low-carbon agriculture development in local governments of China. [Method] The emissions of green-house gas, the connotation and characteristics of low-carbon agriculture, and the necessity of developing low-carbon agriculture were analyzed, obtaining the positioning and measures for the development of low-carbon agriculture in local government. [Result] Government plays a leading role in the development of low-carbon agriculture. The development of low-carbon agriculture can be promoted through the formulation of scientific low-carbon agricultural development plan, culturing new talents on low-carbon agriculture, promoting low-carbon agricultural technology, establishing low-carbon agricultural risk prevention mechanisms. [Conclusion] Making economy, environment and resources coordinated with each other, leading by the concept of scientific development with the concept of sustainable development, is where the future of agricultural development in China lies.展开更多
In order to reduce carbon emission in agricultural production,this paper has discussed the developmental trends of low-carbon agriculture in terms of developing precision agriculture,improving the efficiency of fertil...In order to reduce carbon emission in agricultural production,this paper has discussed the developmental trends of low-carbon agriculture in terms of developing precision agriculture,improving the efficiency of fertilizer utilization,scientific use of pesticides,water-saving irrigation,ecological control of pests and diseases,as well as energy conservation and emission reduction by agricultural machinery and other agricultural practices.展开更多
Firstly,the status quo of low-carbon agriculture development in China was analyzed,and then advanced experience of developed countries in low-carbon agriculture development was introduced,finally ways of developing lo...Firstly,the status quo of low-carbon agriculture development in China was analyzed,and then advanced experience of developed countries in low-carbon agriculture development was introduced,finally ways of developing low-carbon agriculture in China were put forward.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
There is growing concern that increasing concentrations of greenhouse gases in the atmosphere have been responsible for global warming through their effect on radiation balance and temperature. The magnitude of emissi...There is growing concern that increasing concentrations of greenhouse gases in the atmosphere have been responsible for global warming through their effect on radiation balance and temperature. The magnitude of emissions and the relative importance of different sources vary widely, regionally and locally. The Indus Basin of Pakistan is the food basket of the country and agricultural activities are vulnerable to the effects of global warming due to accelerated emissions of GHGs. Many developments have taken place in the agricultural sector of Pakistan in recent decades in the background of the changing role of the government and the encouragement of the private sector for investment in new ventures. These interventions have considerable GHG emission potential. Unfortunately, no published information is currently available on GHG concentrations in the Indus Basin to assess their magnitude and emission trends. The present study is an attempt to estimate GHG (CO2, CH4 and N2O) emissions arising from different agro-ecosystems of Indus Basin. The GHGs were estimated mostly using the IPCC Guidelines and data from the published literature. The results showed that CH4 emissions were the highest (4.126 Tg yr^-1) followed by N20 (0.265 Tg yr^-1) and CO2 (52.6 Tg yr^-1). The sources of CH4 are enteric fermentation, rice cultivation and cultivation of other crops. N2O is formed by microbial denitrification of NO3 produced from applied fertilizer-N on cropped soils or by mineralization of native organic matter on fallow soils. CO2 is formed by the burning of plant residue and by soil respiration due to the decomposition of soil organic matter.展开更多
文摘The economy of Swaziland is depended on agriculture. In 2009, it was reported that agriculture, forestry, and manufacturing contributed 42% of Swaziland’s Gross Domestic Product (GDP). Besides economic importance, animal agriculture is important for food production and life sustenance. It is also viewed as a symbol of wealth and high social status particularly for the rural folks. Despite the merits of agricultural activities, agricultural production, particularly animal production, has been incriminated for an accelerated emission of greenhouse gases. These gases are responsible for global warming and climate change. The aim of this study was to determine the contribution of animal agriculture to greenhouse gases production and to elicit adaptation strategies to climate change and the role of modern technologies as mitigating measures. The minor and major greenhouse gases produced by farm animals were computed using the IPCC spread sheet for calculation of greenhouse gases emissions. The minor greenhouse gases produced by farm animals were NOx and CO2 and the major gasses included CH4 and N2O. The greenhouse gas that was emitted the most by farm animals was CH4, 24 Gg or 600 CO2e per annum. Ruminants were the major producers of methane. The producers of the least greenhouse gases emissions were non ruminants. Livestock produced 0.87 Gg of N2O per annum, a global warming potential of 259 CO2e. Feeding ammoniated straw and silage inoculating with transgenic rumen bacteria, animal breeding and manure storage techniques, use of biogas digester with methane gas recovery and emphasis on non ruminant production were possible strategies that could be employed to reduce greenhouse gases production from the livestock sector. It was recommended that feed preservation technologies, selection strategies, water harvesting, storage and recycling strategies and intensive livestock production systems could be used as adaptation strategies to climate change in livestock production.
基金Supported by the National Natural Science Foundation of China(70901035)~~
文摘[Objective] To analyze the positioning of low-carbon agriculture development in local governments of China. [Method] The emissions of green-house gas, the connotation and characteristics of low-carbon agriculture, and the necessity of developing low-carbon agriculture were analyzed, obtaining the positioning and measures for the development of low-carbon agriculture in local government. [Result] Government plays a leading role in the development of low-carbon agriculture. The development of low-carbon agriculture can be promoted through the formulation of scientific low-carbon agricultural development plan, culturing new talents on low-carbon agriculture, promoting low-carbon agricultural technology, establishing low-carbon agricultural risk prevention mechanisms. [Conclusion] Making economy, environment and resources coordinated with each other, leading by the concept of scientific development with the concept of sustainable development, is where the future of agricultural development in China lies.
基金Supported by Special Post-expo Project Funded by the Ministry of Science and Technology(2010BAK69B18)Special Scientific and Technical Project in Chongming of Shanghai Science and Technology Commission(10DZ1960101)
文摘In order to reduce carbon emission in agricultural production,this paper has discussed the developmental trends of low-carbon agriculture in terms of developing precision agriculture,improving the efficiency of fertilizer utilization,scientific use of pesticides,water-saving irrigation,ecological control of pests and diseases,as well as energy conservation and emission reduction by agricultural machinery and other agricultural practices.
基金Supported by the Planning Project of Philosophy and Social Sciences in Beijing City in 2011(11JGB035)Soft Science Subject of Henan Province in 2013(132400410012)
文摘Firstly,the status quo of low-carbon agriculture development in China was analyzed,and then advanced experience of developed countries in low-carbon agriculture development was introduced,finally ways of developing low-carbon agriculture in China were put forward.
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There is growing concern that increasing concentrations of greenhouse gases in the atmosphere have been responsible for global warming through their effect on radiation balance and temperature. The magnitude of emissions and the relative importance of different sources vary widely, regionally and locally. The Indus Basin of Pakistan is the food basket of the country and agricultural activities are vulnerable to the effects of global warming due to accelerated emissions of GHGs. Many developments have taken place in the agricultural sector of Pakistan in recent decades in the background of the changing role of the government and the encouragement of the private sector for investment in new ventures. These interventions have considerable GHG emission potential. Unfortunately, no published information is currently available on GHG concentrations in the Indus Basin to assess their magnitude and emission trends. The present study is an attempt to estimate GHG (CO2, CH4 and N2O) emissions arising from different agro-ecosystems of Indus Basin. The GHGs were estimated mostly using the IPCC Guidelines and data from the published literature. The results showed that CH4 emissions were the highest (4.126 Tg yr^-1) followed by N20 (0.265 Tg yr^-1) and CO2 (52.6 Tg yr^-1). The sources of CH4 are enteric fermentation, rice cultivation and cultivation of other crops. N2O is formed by microbial denitrification of NO3 produced from applied fertilizer-N on cropped soils or by mineralization of native organic matter on fallow soils. CO2 is formed by the burning of plant residue and by soil respiration due to the decomposition of soil organic matter.