Sains Malaysiana 52(3)(2023): 723-740
http://doi.org/10.17576/jsm-2023-5203-04
Carbon
Sequestration, Biomass and Soil Carbon Pool Estimation in Oak-Dominated Forests
of Hindu-Kush Range Mountains of Pakistan
(Penyerapan Karbon, Biojisim dan Anggaran Takungan Karbon
Tanah di Hutan Didominasi Oak di Banjaran Hindu-Kush di Pakistan)
ATAUR RAHMAN1, NASRULLAH KHAN2,
INAYAT UR RAHMAN3, KISHWAR ALI4 & ACHIM
BRAUNING5
1Laboratory of Plant Ecology, Department of
Botany, University of Malakand, Pakistan-18800
2Laboratory of Plant Ecology, Department of
Botany, University of Malakand, Pakistan-18800
3Department of Botany, Government
Degree College Madyan Swat. 19020
4School of General Education College of North
Atlantic Qatar. P.O Box 24449
5Institute
of Geography, Department of Geography and Geosciences,
Friedrich-Alexander-University (FAU) Erlangen-Nuremberg, Erlangen, Germany
Diserahkan:
15 Jun 2021/Diterima: 20 Februari 2023
Abstract
The
present study aimed to determine the vegetation biomass, soil carbon stocks
and carbon sequestration potential of Oak-dominated forests. Thirty forest
stands having 10 quadrats of 20×20 were randomly sampled. Out of eighteen tree
species, twelve species were associated with Group II followed by Groups I and
III, with eight species each. Quercus dilatata was the only Oak species recorded in all three
groups having maximum density in Group II (56.14). Quercus semecarpifolia accounted the highest proportion
of carbon (235 MgC/ha) in Group II. Quercus baloot, being the dominant species of Group I, is found to accommodate the highest
quantities of BMC (335±43 Mg/ha) for all size classes. The highest nitrogen
content, total nitrogen and carbon-nitrogen ratio were 0.185%, 8.23 and
59.64, respectively, in Group II. The mean bulk density was 1.519 g/cm3 in group III. The highest soil organic carbon (SOC) was recorded in Group II
(2.69%, 119.82 tons/ha). Because of their large aerial scale and high carbon
density, Oak-dominated forests in Group II store most of the carbon. These results
suggest that organic carbon is a major source of forest carbon with significant
climate change mitigation potential that must be conserved and improved by
sustainable forest management.
Keywords:
Bulk density; carbon sequestration; forest carbon; mitigation potential;
vegetation biomass
Abstrak
Kajian ini bertujuan untuk
menentukan biojisim tumbuh-tumbuhan, stok karbon tanah dan potensi penyerapan
karbon hutan yang didominasi Oak. Tiga puluh dirian hutan yang mempunyai 10 kuadrat 20×20
telah diambil secara rawak. Dalam lapan belas spesies pokok, dua belas spesies
dikaitkan dengan Kumpulan II diikuti oleh Kumpulan I dan III, dengan lapan
spesies setiap satu. Quercus
dilatata adalah satu-satunya spesies Oak
yang direkodkan dalam ketiga-tiga kumpulan yang mempunyai ketumpatan maksimum
dalam Kumpulan II (56.14). Quercus
semecarpifolia menyumbang
bahagian tertinggi karbon (235 MgC/ha) dalam Kumpulan II. Quercus baloot, sebagai
spesies dominan Kumpulan I, didapati dapat menampung kuantiti tertinggi BMC
(335±43 Mg/ha) untuk semua kelas saiz. Kandungan nitrogen tertinggi, jumlah nitrogen dan nisbah
karbon-nitrogen adalah 0.185%, 8.23 dan 59.64, masing-masing dalam Kumpulan
II. Purata
ketumpatan pukal ialah 1.519 g/cm3 dalam Kumpulan III. Karbon organik
tanah (SOC) tertinggi dicatatkan dalam Kumpulan II (2.69%, 119.82 tan/ha). Oleh kerana
skala udaranya yang besar dan ketumpatan karbon yang tinggi, hutan yang
didominasi oleh Oak dalam Kumpulan II menyimpan kebanyakan daripada karbon. Keputusan ini
menunjukkan bahawa karbon organik adalah sumber utama karbon hutan dengan
potensi pengurangan perubahan iklim yang ketara yang mesti dipelihara dan
diperbaiki oleh pengurusan hutan yang mampan.
Kata kunci: Biojisim tumbuhan; karbon
hutan; ketumpatan pukal; penyerapan karbon; potensi mitigasi
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*Pengarang untuk surat-menyurat; email: nasrullah.uom@gmail.com
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