Various agroforestry systems are prevalent in different agro-climatic regions of India and occupy sizeable area. Populus deltoides (poplar) based agroforestry systems are very predominant in Indo-Gangetic Plains of northern India. These systems are not only meeting wood demand of wood-based industries but also contributing significantly in generating employment, reducing atmospheric CO2 vis-a-vis mitigating climate change. The present study aimed at estimating area under poplar plantations and assessment of biomass production and carbon stock at district level for selected districts of Punjab and Haryana states. High resolution multispectral remote sensing data (LISS-IV, spatial resolution- 5.8 m) have been used for mapping poplar area in these districts. Growth data (tree density, diameter at breast height) from farmers’ fields were collected for assessment of aboveground and total biomass. Poplar area in Hoshiarpur, Rupnagar, Ludhiana, Shahid Bhagat Singh Nagar, Yamunanagar, Kurukshetra and Karnal districts accounted for 3.19, 4.09, 1.02, 0.43, 7.25, 1.58 and 0.97%, respectively, of their geographical area. As percentage of agroforestry area, poplar area occupied 43.8% in four districts of Punjab and 53.4% in three districts of Haryana. Estimated carbon stock in total biomass of poplar plantations was 0.931, 0.481, 0.287, 0.040, 0.949, 0.256 and 0.229 million tonnes, respectively. CO2 equivalent C in aboveground and total biomass was estimated to be 7.854 and 9.946 million t, respectively, in all these seven districts. The proposed methodology based on object-oriented image classification showed promising results as far as mapping of agroforestry systems/species is concerned.

中文翻译：

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印度恒河平原旁遮普邦和哈里亚纳邦基于三角树的农林复合系统下面积和碳储量的空间分析

各种农林业系统在印度不同的农业气候区普遍存在，并占据了相当大的面积。Populus deltoides（杨树）的农林业系统在印度北部的印度恒河平原占主导地位。这些系统不仅满足了以木材为基础的工业的木材需求，而且在创造就业、减少大气二氧化碳以及缓解气候变化方面也做出了重大贡献。本研究旨在估算旁遮普邦和哈里亚纳邦选定地区的杨树种植面积，并评估地区级的生物量生产和碳储量。高分辨率多光谱遥感数据（LISS-IV，空间分辨率- 5.8 m）已被用于绘制这些地区的杨树区。生长数据（树木密度，收集农民田地的胸高直径）用于评估地上生物量和总生物量。Hoshiarpur、Rupnagar、Ludhiana、Shahid Bhagat Singh Nagar、Yamunanagar、Kurukshetra 和 Karnal 地区的杨树面积分别占其地理面积的 3.19、4.09、1.02、0.43、7.25、1.58 和 0.97%。杨树面积占旁遮普省四个区的43.8%，哈里亚纳邦三个区的53.4%。估计杨树人工林总生物量的碳储量分别为 0.931、0.481、0.287、0.040、0.949、0.256 和 22.9 万吨。在所有这七个地区，地上和总生物量中的 CO2 当量 C 估计分别为 7.854 和 994.6 万吨。