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Avoiding Fields on Fire: Information Dissemination Policies for Environmentally Safe Crop-Residue Management 避免田地着火:环境安全作物残留管理的信息传播政策
Pub Date : 2021-08-15 DOI: 10.2139/ssrn.3905970
M. H. Farahani, Milind Dawande, G. Janakiraman, Shouqiang Wang
Agricultural open burning, i.e., the practice of burning crop residue in harvested fields to prepare land for sowing a new crop, is well-recognized as a significant contributor to CO2 and black-carbon emissions, and long-term climate change. Low-soil-tillage practices using a specific agricultural machine called Happy Seeder, which can sow the new seed without removing the previous crop residue, have emerged as the most effective and profitable alternative to open burning. However, given the limited number of Happy Seeders that the government can supply, and the fact that farmers incur a significant yield loss if they delay sowing the new crop, farmers are often unwilling to wait to be processed by the Happy Seeder and, instead, decide to burn their crop residue. We study how the government can use effective information-disclosure policies in the operation of Happy Seeders to minimize agricultural open burning. A Happy Seeder is assigned to process a group of farms in an arbitrary order. The government knows, but does not necessarily disclose, the schedule for the Happy Seeder at the start of the sowing season. Farmers incur a disutility per unit of time while waiting for the Happy Seeder due to the yield loss as a result of late sowing of the new crop. If the Happy Seeder processes a farm, then the farmer gains a positive utility. At the beginning of each period, each farmer decides whether to burn her crop residue or to wait, given the information provided by the government about the Happy Seeder's schedule. We propose a class of information-disclosure policies, which we refer to as dilatory policies, that provide no information to the farmers about the schedule until a pre-specified period and then reveal the entire schedule. By obtaining the unique symmetric Markov perfect equilibrium under any dilatory policy, we show that the use of an optimal dilatory policy can significantly lower the number of farms burnt compared to that under the full-disclosure and the no-disclosure policies. Using data from the rice-wheat crop system in northwestern India -- an area of the world with the highest prevalence of open burning -- we conduct a comprehensive case study and demonstrate that the optimal dilatory policy can reduce CO2 and black-carbon emissions by at least 14%.
农业露天焚烧,即在收获的田地中焚烧作物残茬,为播种新作物做准备的做法,被公认为是二氧化碳和黑碳排放的重要贡献者,也是长期气候变化的重要因素。使用一种名为“快乐播种机”(Happy Seeder)的特殊农业机器进行低土壤耕作,这种机器可以播种新种子,而不会清除以前的作物残留物,已经成为露天焚烧的最有效和最有利可图的替代方法。然而,由于政府提供的“快乐播种机”数量有限,再加上农民推迟播种会造成巨大的产量损失,农民往往不愿意等待“快乐播种机”的处理,而是决定烧掉他们的作物残渣。我们研究了政府如何在快乐播种机的运作中使用有效的信息披露政策来减少农业露天焚烧。“快乐播种者”被指派以任意顺序处理一组农场。政府知道快乐播种机在播种季节开始时的时间表,但不一定会透露。农民在等待“快乐播种机”的时候,每单位时间都会产生负效用,这是由于新作物播种晚了而导致的产量损失。如果快乐播种机处理一个农场,那么农民就会获得正效用。在每个时期的开始,每个农民根据政府提供的关于快乐播种者的时间表的信息,决定是烧掉她的作物残渣还是等待。我们提出了一类信息披露策略,我们称之为延迟策略,它们在预先指定的时间段之前不向农民提供有关计划的信息,然后显示整个计划。通过得到任意延迟策略下的唯一对称马尔可夫完美均衡,我们证明了与完全披露和不披露策略相比,使用最优延迟策略可以显著降低农场的燃烧数量。利用来自印度西北部(世界上露天焚烧最普遍的地区)的水稻-小麦作物系统的数据,我们进行了一个全面的案例研究,并证明了最佳的延迟政策可以减少至少14%的二氧化碳和黑碳排放。
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引用次数: 1
Development of Air Quality Monitoring and Notification System Using Nordic Thingy IoT Kit 使用Nordic Thingy IoT套件开发空气质量监测和通知系统
Pub Date : 2020-01-09 DOI: 10.2139/ssrn.3516624
Shivam Dutta, D. Sivaraj, Venkata Sai Joga Rao, H. Kumar, Kasturi Kalita
Air pollution occurs in places when there is lot of chemicals and dust particles and gases mixed together in the atmosphere and it has adverse effects on human health, ecosystems and the climate. Therefore, in today’s time it is very important for every individual to check the air quality of the surroundings. It leads to the need of an air quality monitoring system. This work proposes a portable Smart phone accessible Air quality monitoring and notification system, which notifies the user when the CO2 level and Total Volatile Organic Compound (TVOC) exceeds the maximum safety level. The concentration of carbon dioxide CO2 in the surrounding spans from 300-500 parts per million(ppm), whereas the global average holds 400 ppm of CO2. The quality of the air concerning carbon dioxide and TVOC value can be examined and notified using a small portable IoT sensor kit when the quality of air crosses the maximum safety levels.
空气污染发生在大气中有大量化学物质、粉尘颗粒和气体混合在一起的地方,它对人类健康、生态系统和气候产生不利影响。因此,在今天的时间是非常重要的,每个人都检查周围的空气质量。这就需要一个空气质量监测系统。本工作提出了一种便携式智能手机可访问的空气质量监测和通知系统,当二氧化碳水平和总挥发性有机化合物(TVOC)超过最大安全水平时,该系统会通知用户。周围的二氧化碳浓度在300- 500ppm之间,而全球平均水平为400ppm。当空气质量超过最大安全水平时,可以使用小型便携式物联网传感器套件检查和通知有关二氧化碳和TVOC值的空气质量。
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引用次数: 1
Low-Cost Air Pollution Monitoring Device Based on Air Quality Index 基于空气质量指数的低成本空气污染监测装置
Pub Date : 2020-01-07 DOI: 10.2139/ssrn.3515043
Rishabh Bajaj, Rishav Sen, A. Sengupta, A. Sen, S. Karmakar, Saptarshi Ghosh, Vivek Kumar, Nilava Debabhuti, Prolay Sharma, B. Tudu, R. Bandyopadhyay
With air pollution growing at an alarming rate, it is becoming necessary to quantify correctly the level of toxicity in the air. The novelty in our system relies on a cheap, affordable and quick measuring index for the air quality around us. It uses a portable battery powered hub based on an 8-bit microcontroller, equipped with several Metal Oxide Semiconductor (MOS) based gas sensors and Particulate matter (PM) sensors. The developed system acquires the sensor responses in real-time for accurate monitoring. A mobile application has been developed that converts the obtained sensor values to the standard Air Quality Index (AQI) and displays the final result. This ensures the user-friendliness of our project, keeping a constant check on the air quality around us.
随着空气污染以惊人的速度增长,有必要正确地量化空气中的毒性水平。我们系统的新颖性依赖于一种廉价、经济、快速的空气质量测量指标。它使用基于8位微控制器的便携式电池供电集线器,配备了几个基于金属氧化物半导体(MOS)的气体传感器和颗粒物(PM)传感器。该系统可以实时获取传感器的响应,实现对传感器的精确监测。他们开发了一款移动应用程序,可以将获得的传感器值转换为标准空气质量指数(AQI),并显示最终结果。这确保了我们项目的用户友好性,并不断检查我们周围的空气质量。
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引用次数: 2
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Environmental Science eJournal
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