Carbon Storage Potential of Agroforestry System near Brick Kilns in Irrigated Agro-Ecosystem
2022
Nayab Komal | Qamar uz Zaman | Ghulam Yasin | Saba Nazir | Kamran Ashraf | Muhammad Waqas | Mubeen Ahmad | Ammara Batool | Imran Talib | Yinglong Chen
The current study was conducted to estimate the carbon (C) storage status of agroforestry systems, via a non-destructive strategy. A total of 75 plots (0.405 ha each) were selected by adopting a lottery method of random sampling for C stock estimations for soil, trees and crops in the Mandi-Bahauddin district, Punjab, Pakistan. Results revealed that the existing number of trees in selected farm plots varied from 25 to 30 trees/ha. Total mean tree carbon stock ranged from 9.97 to 133 Mg C ha&minus:1, between 5&ndash:10 km away from the brick kilns in the study area. The decreasing order in terms of carbon storage potential of trees was Eucalyptus camaldulensis >: Syzygium cumin >: Popolus ciliata >: Acacia nilotica >: Ziziphus manritiana >: Citrus sinensis >: Azadirachtta Indica >: Delbergia sisso >: Bambusa vulgaris >: Melia azadarach >: Morus alba. Average soil carbon pools ranged from 10.3&ndash:12.5 Mg C ha&minus:1 in the study area. Meanwhile, maximum C stock for wheat (2.08 ×: 106 Mg C) and rice (1.97 ×: 106 Mg C) was recorded in the cultivated area of Tehsil Mandi-Bahauddin. The entire ecosystem of the study area had an estimated woody vegetation carbon stock of 68.5 Mg C ha&minus:1 and a soil carbon stock of 10.7 Mg C ha&minus:1. These results highlight that climate-smart agriculture has great potential to lock up more carbon and help in the reduction of CO2 emissions to the atmosphere, and can be further used in planning policies for executing tree planting agendas on cultivated lands and for planning future carbon sequestration ventures in Pakistan.
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