Which policy would work better for improved soil fertility management in sub-Saharan Africa, fertilizer subsidies or carbon credits?

文献类型： 外文期刊

第一作者： Marenya, Paswel

作者： Marenya, Paswel;Nkonya, Ephraim;Kato, Edward;Xiong, Wei

作者机构：

关键词： agricultural policy;application rates;carbon;carbon sequestration;crop yield;fertilizers;income;land management;poverty;productivity;simulation;simulation models;soil fertility;subsidies;Africa.

期刊名称：AGRICULTURAL SYSTEMS （ 影响因子：5.37； 五年影响因子：5.622 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Why do many smallholder farmers fail to adopt improved land management practices which can improve yields and incomes? The reason is not always because these practices are uneconomical but sometimes it is because resource poverty prevents farmers from taking advantage of yield and income enhancing agricultural practices. In this study we examine the relative merits of using a carbon payment scheme compared to a subsidy policy to help reduce the cost of specific land management practices with productivity and ecosystem benefits such as carbon sequestration. Using a 30-year crop simulation model, we examine the impacts of different soil fertility management treatments (SFTs) on yields and soil carbon and proceed to compute discounted incremental revenue streams over the same period. We find that the SFTs simulated are on average profitable given the conditions assumed in our DSSAT simulations. When carbon was priced at $8 or $12/t CO2e, the increase in incremental incomes generated from a carbon payment were invariably higher than those imputed from a 50% fertilizer subsidy. When carbon was priced at $4/Co2e, the increase was almost similar and sometimes higher than that from the imputed income transfer from a 50% subsidy. If these indications hold in further research, it could imply that using fertilizer subsidies as the sole mechanism for stimulating adoption of improved soil fertility management practices may unnecessarily forgo other complementary and possibly superior alternatives. Depending on the specific economic equity considerations, we conclude that either of these instruments can be used to help farmers break through resource barriers that prevent them from adopting productivity-enhancing and environmentally beneficial agricultural practices. However, given the fiscal burden on public finances and possible opportunity costs of any substantial subsidy program, it is possible that a carbon payment system can be a reasonable alternative assuming the range of carbon prices used in this study and especially if accompanied by measures to ameliorate the costs of fertilizer to farmers.

分类号： S

  • 相关文献

[1]Long-term effects of organic amendments on the rice yields for double rice cropping systems in subtropical China. Bi, Lidong,Zhang, Bin,Zhang, Jiguang,Liang, Yin,Liu, Guangrong,Li, Zuzhang,Liu, Yiren,Ye, Chuan,Yu, Xichu,Lai, Tao,Yin, Jianmin.

[2]Global-scale modelling of future changes in sown areas of major crops. Wu, Wenbin,Shibasaki, Ryosuke,Yang, Peng,Tan, Guoxin,Matsumura, Kan-ichiro,Sugimoto, Kenji.

[3]Dynamics of soil carbon to nitrogen ratio changes under long-term fertilizer addition in wheat-corn double cropping systems of China. Wang, X. J.,Cong, R. H.,Xu, M. G.,Zhang, W. J.,Xie, L. J.,Wang, B. R.,Cong, R. H.,Wang, X. J.,Huang, S. M..

[4]Agricultural vulnerability and adaptation in developing countries: the Asia-Pacific region. Luo, QY,Lin, E.

[5]Soil organic carbon fractions and management index after 20 yr of manure and fertilizer application for greenhouse vegetables. Lou, Y.,Xu, M.,Wang, W.,Sun, X.,Liang, C..

[6]Crop yield and soil organic matter after long-term straw return to soil in China. Wang, Jinzhou,Xu, Minggang,Zhang, Wenju,Lu, Chang'ai,Wang, Jinzhou,Feng, Gu,Wang, Jinzhou,Wang, Xiujun,Wang, Xiujun.

[7]Crop Yield and Soil Responses to Long-Term Fertilization on a Red Soil in Southern China. Zhang Hui-Min,Wang Bo-Ren,Xu Ming-Gang,Fan Ting-Lu,Zhang Hui-Min,Wang Bo-Ren,Xu Ming-Gang,Fan Ting-Lu,Zhang Hui-Min,Zhang Hui-Min.

[8]Long-term effects of controlled release urea application on crop yields and soil fertility under rice-oilseed rape rotation system. Geng, Jibiao,Sun, Yunbao,Zhang, Min,Li, Chengliang,Yang, Yuechao,Liu, Zhiguang,Li, Shuanglai.

[9]Long-Term Fertilizer Experiment Network in China: Crop Yields and Soil Nutrient Trends. Poulton, Paul,Powlson, David,Todd, Alan,Payne, Roger,Zhao, Bing-qiang,Li, Xiu-ying,Li, Xiao-ping,Shi, Xiao-jun,Huang, Shao-min,Wang, Bo-ren,Zhu, Ping,Yang, Xue-yun,Liu, Hua,Chen, Yi.

[10]Impacts of biochar addition on rice yield and soil properties in a cold waterlogged paddy for two crop seasons. Liu, Yuxue,Lu, Haohao,Yang, Shengmao,Wang, Yaofeng,Liu, Yuxue,Lu, Haohao,Yang, Shengmao.

[11]Effects of Carbon Concentrations and Carbon to Nitrogen ratios on Sporulation of Two Biological Control Fungi as Determined by Different Culture Methods. Liu, Xingzhong,Gao, Li.

[12]Progress in Significant Soil Science Fields of China over the Last Three Decades: A Review. Zhao Qi-Guo,Yan Xiao-Yuan,Zhang Gan-Lin,Cai Zu-Cong,He Ji-Zheng,Zhang Bin.

[13]Characterization of natural variation for zinc, iron and manganese accumulation and zinc exposure response in Brassica rapa L.. Wu, Jian,Schat, Henk,Sun, Rifei,Koornneef, Maarten,Wang, Xiaowu,Aarts, Mark G. M..

[14]Review of mid- and long-term predictions of China's grain security. Lv, Xinye. 2013

[15]Impacts of agricultural public spending on Chinese food economy A general equilibrium approach. Xu, Shiwei,Zhang, Yumei,Xu, Shiwei,Zhang, Yumei,Diao, Xinshen,Chen, Kevin Z.. 2011

[16]An Efficient Graph-based Method for Long-term Land-use Change Statistics. Zhang, Yipeng,Gao, Yunbing,Gao, Bingbo,Pan, Yuchun,Yan, Mingyang,Zhang, Yipeng,Gao, Yunbing,Gao, Bingbo,Pan, Yuchun,Yan, Mingyang,Gao, Yunbing,Pan, Yuchun,Pan, Yuchun,Yan, Mingyang. 2016

[17]Quantitative effects of wind erosion on the soil texture and soil nutrients under different vegetation coverage in a semiarid steppe of northern China. Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Yan, Ruirui,Chen, Baorui,Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Yan, Ruirui,Chen, Baorui,Yan, Yuchun,Xin, Xiaoping,Wang, Xu,Yang, Guixia,Yan, Ruirui,Chen, Baorui,Xu, Xingliang.

[18]TheimpactofFoodstructureonhealthexpenditureinruralHainanofChina. YuWen,WenYu,YuWang,Abdul-GafarAhmed,ZheminLi,ShiweiXu. 2015

[19]Effect of vegetation coverage on aeolian dust accumulation in a semiarid steppe of northern China. Yan, Yuchun,Xin, Xiaoping,Yang, Guixia,Wang, Xu,Yan, Ruirui,Chen, Baorui,Xu, Xingliang. 2011

[20]Agricultural growth dynamics and decision mechanism in Chinese provinces: 1988-2008. Yu, Kang,Guo, Ping,Xin, Xiangfei,Nuetah, J. Alexander,Nuetah, J. Alexander. 2011

作者其他论文 更多>>

微信小程序