Evaluation of Soil Organic Carbon Stock in Coastal Sabkhas under Different Vegetation Covers

Journal of Marine Science and Engineering - Tập 10 Số 9 - Trang 1234
Ebrahem M. Eid1,2, Muhammad Arshad3, Sulaiman A. Alrumman1, Dhafer A. Al‐Bakre4, Mohamed Tawfic Ahmed1, Hanan Almahasheer5, Amr E. Keshta6
1Department of Biology, College of Science, King Khalid University, Abha 61321, Saudi Arabia
2Department of Botany, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
3Department of Chemical Engineering, College of Engineering, King Khalid University, Abha 61321, Saudi Arabia
4Biology Department, College of Science, Tabuk University, Tabuk 47512, Saudi Arabia
5Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), Dammam, 31441-1982, Saudi Arabia
6Botany Department, College of Science, Tanta University, Tanta 31512, Egypt

Tóm tắt

There has been increasing focus on conserving coastal ecosystems as they have been recognized as high ecosystem carbon stocks and are in the process of land conversion. The present study aims to examine how different vegetation covers impact the soil organic carbon (SOC) stock in coastal sabkhas. To this end, the study was carried out at ten sampling sites represent ten sabkhas in Saudi Arabia’s southern Red Sea coast for two main goals: (1) to examine the vertical distribution of SOC content, SOC density, and the soil bulk density (SBD) based on different vegetation covers, and (2) to assess these locations’ SOC stocks. This study posits that sabkhas with different vegetation covers had distinct parameters specified above. Significant SBD differences were observed in sabkhas with different vegetation covers, with the lowest mean values of sabkhas having >75–100% vegetation cover and the highest mean values of sabkhas having 0–25% vegetation cover. The studied sabkhas also showed significant difference in the total means of SOC density, SOC content, and SOC stock in terms of different vegetation covers, with the highest mean values of sabkhas having >75–100% vegetation cover and the lowest mean of sabkhas having 0–25% vegetation cover. The present study is the first to focus on Saudi Arabia’s sabkha blue carbon stocks and its results can help add to the literature on sabkhas carbon stock, thus aiding relevant government agencies working towards sabkhas management, encouraging public awareness regarding sabkhas conservation stocks, and their part in climate change mitigation.

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