印度西南高止山脉库尔塔拉姆丘陵热带森林土壤有机碳储量的高度变化

E. Pandian, P. Ravichandran
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引用次数: 2

摘要

通过森林生态系统实现气候变化和碳减排在全球范围内发挥着重要作用。土壤是一个巨大的碳库,其储量随森林类型和海拔的不同而变化很大。山地生态系统土壤有机碳储量的变化受土壤类型、气候条件、植被格局和海拔梯度等因素的影响。在印度西南高止山脉的Courtallam丘陵上,在5个不同的森林海拔高度(200、400、600、800和1000米)下,测量了3个深度(0-10、10-20和20-30厘米)的土壤有机碳储量。土壤有机碳储量在0-10、10-20和20-30 cm 3层均随海拔高度的增加而显著增加(P<0.05)。低海拔(200 m)土壤有机碳储量在0 ~ 30 cm处为42.79 mg ha-1,中海拔(600 m)土壤有机碳储量在0 ~ 30 cm处为50.25 mg ha-1,其他海拔分别在400、800和1000 m处为46.45、48.49和45.05 mg ha-1。表层(0 ~ 10 cm)土壤有机碳含量为17.89 ~ 22.37 mg ha-1,中层(10 ~ 20 cm)土壤有机碳含量为14.00 ~ 16.573 mg ha-1,底层(20 ~ 30 cm)土壤有机碳含量为9.08 ~ 11.35 mg ha-1。这些结果也将增强我们评估这些森林类型在土壤固碳中的作用以及开发和验证热带森林生态系统SOC模型的能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Altitudinal variation of soil organic carbon stock in tropical forest of Courtallam hills, Southern Western Ghats of India
The climate change and carbon mitigation through forest ecosystems play an important role in the global perspective. Soil is a huge carbon reservoir and its storage capacity varied greatly with forest type and altitude. The mountain ecosystem varies in soil organic carbon stock (SOC) due to variations in soil types, climatic conditions, vegetation patterns and elevational gradients. Soil organic carbon stockswere measured at three depths (0–10, 10–20, and 20–30 cm) in five different forest elevation (200, 400, 600, 800, and 1000 m asl) on Courtallam hills, Southern Western Ghats, India. SOC stocks increased significantly with the increase in altitude (P<0.05) at all the three layers (0–10, 10–20 and 20–30 cm). A total of SOC stocks ranged from 42.79 mg ha-1at 0–30 cm depth were observed in lower altitude (200 m) and the highest value of 50.25 mg ha-1 at 0–30 cm depth was observed in mid-elevation 600 m, while in other elevational showed 46.45, 48.49 and 45.05 mg ha-1 in 400, 800 and 1000 m respectively. SOC ranged from 17.89 to 22.37 mg ha-1 in soil surface layer (0–10 cm), 14.00 to 16.573 mg ha-1 in middle layer (10–20 cm) and 9.08 to 11.35 mg ha-1 in the bottom layer (20–30 cm). These results would also enhance our ability to assesses the role of these forest types in soil carbon sequestration and for developing and validating the SOC models for tropical forest ecosystems.
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