Ecosystem carbon storage in forest fragments of differing patch size.

Abstract:

:Forest fragmentation threatens the ecosystem carbon (C) storage. The distribution patterns of ecosystem C density are poorly documented for fragmented forests of differing patch size. The objectives of this study were to examine C density in these forest ecosystems and the influence of edge effects on C density. Allometric equations were used to quantify aboveground biomass. Carbon density was estimated by analyzing the C concentration of each component. We found that ecosystem carbon density ranged from 173.9 Mg ha-1 in the small sized forest fragments, to 341.1 Mg ha-1 in the contiguous evergreen sub-tropical forest. Trees (46.5%) and mineral soil (50.2%) were the two largest contributors to the total ecosystem C pool in all fragments. Both C and nitrogen (N) in soil and fine roots were highly heterogeneous among the different fragment sizes and soil depths. We concluded that ecosystem C density of forest fragments were significantly influenced by patch size and edge effects. The fragmented forests in southern China play an important role in the C budget, and need urgent conservation. These results are likely to be further integrated into forest management plans and generalized into other contexts, to evaluate C stocks at the landscape scale.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Ma L,Shen C,Lou D,Fu S,Guan D

doi

10.1038/s41598-017-13598-4

subject

Has Abstract

pub_date

2017-10-13 00:00:00

pages

13173

issue

1

issn

2045-2322

pii

10.1038/s41598-017-13598-4

journal_volume

7

pub_type

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