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Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

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Carbon sequestration by fruit trees--Chinese apple orchards as an example.

Ting Wu¹, Yi Wang, Changjiang Yu

¹College of Agronomy and Biotechnology, China Agricultural University, Beijing, China.

|June 22, 2012

Summary

Chinese apple orchards significantly contribute to carbon sequestration, acting as vital terrestrial carbon sinks. Their capacity peaks around 18 years, playing a key role in China

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Area of Science:

Agricultural Science
Ecology
Environmental Science

Background:

Apple production covers 1.99 million hectares in China, representing a significant agricultural sector.
Orchards have the potential to influence terrestrial ecosystem carbon (C) cycling and contribute to carbon sequestration.

Purpose of the Study:

To analyze the carbon sequestration capability of Chinese apple orchards.
To estimate the dynamics of the net carbon sink in these orchards from the 1990s to 2010.

Main Methods:

Identified assessment factors and weighting factors for carbon sequestration capability through field studies and literature review.
Estimated net carbon sink dynamics using apple orchard inventory data and capability analysis.

Main Results:

Carbon sequestration capability peaks in 18-year-old apple trees, declining thereafter.
Net carbon sink in Chinese apple orchards ranged from 14 to 32 Tg C between 1990 and 2010.
Carbon storage in biomass ranged from 230 to 475 Tg C during the same period.

Conclusions:

Chinese apple orchards represent a substantial net carbon sink, contributing 4.5% to China's total terrestrial ecosystem sink (1990-2010).
Apple production systems, excluding fruit production energy, can be considered significant carbon sinks.