ABSTRACT

As per the commitment of COP-21, reduction in greenhouse gas (GHG) emissions under various production systems without affecting productivity is one of the important challenges in addressing global warming. To address this, environmentally and economically efficient climate resilient management practices were identified under the National Initiative on Climate Resilient Agriculture (NICRA) project and were implemented in the sixteen study villages of four districts of Eastern India. In this study, the GHG emissions in terms of C balance in tCO₂eq due to the adoption of climate resilient practices in agriculture, livestock and forestry were estimated using the EX-ACT model that was developed by the Food and Agriculture Organization (FAO) of the United Nations (UN). EX-ACT tool was found to be an user-friendly and easy tool to assess the C balance in small areas with diverse climate and soil types. The findings of this study reveal that there is a sink due to the adoption of mitigation strategies (climate resilient management practices) in annuals, perennials and afforestration, while a source (emissions) was observed in irrigated rice, land use change and fertilizer use (inputs). When all the components were considered instead of a single component, the overall C balance in the study villages was found negative, suggesting a sink.

摘要

根据COP-21的承诺，在不影响生产力的情况下减少各种生产系统下的温室气体（GHG）排放是应对全球变暖的重要挑战之一。为了解决这个问题，在国家气候适应农业倡议（NICRA）项目下确定了在环境和经济上有效的气候适应管理实践，并在印度东部四个地区的16个研究村中实施了该实践。在本研究中，以tCO _2中的碳平衡为单位的温室气体排放量由于使用了联合国粮食及农业组织（FAO）开发的EX-ACT模型，估算了由于在农业，畜牧业和林业中采用了适应气候变化的做法而产生的当量。发现EX-ACT工具是一种易于使用的简便工具，可以在气候和土壤类型各异的小区域评估C平衡。这项研究的发现表明，由于在年度，多年生和绿化方面采用了缓解策略（气候适应性管理做法），导致了下陷，而在灌溉稻米，土地利用变化和化肥使用中观察到了排放源（排放）（输入）。当考虑所有组成部分而不是单个组成部分时，研究村庄的总体碳平衡被发现为负值，表明存在下沉。