|Table of Contents|

Dynamic Characteristics of Dissolved Organic Carbon(DOC) Released From Organic Matter in Greater Khingan Range Plantation

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年13
Page:
114-120
Research Field:
Publishing date:

Info

Title:
Dynamic Characteristics of Dissolved Organic Carbon(DOC) Released From Organic Matter in Greater Khingan Range Plantation
Author(s):
DU Hao; ZHANG Chengfu; PAN Sihan; WANG Yuqing; CHENG Yuqi; YANG Yuna
(Desert Science and Engineering College，Inner Mongolia Agricultural University，Hohhot，Inner Mongolia 010010)
Keywords:
Greater Khingan Mountains; plantation substitution; organic matter layer; dissolved organic
PACS:
-
DOI:
10.11937/bfyy.20183922
Abstract:
Dissolved organic carbon (DOC) is the most active part of soil carbon pool.Studying the dynamics of dissolved organic carbon (DOC) released from the organic stratum during the growth of plantation is of fundamental significance for understanding the carbon cycle of forests in northern China.Using the method of space instead of time，the concentration of DOC in osmotic water of organic matter layer was collected and measured by selecting plantations of different ages within the jurisdiction of Genhe Forestry Bureau of Greater Hinggan Mountains，Inner Mongolia.The effects of slope position and different months on DOC release from organic matter layer were analyzed.The results showed that DOC concentration increased with the succession of plantations，and there was significant difference between each plot and the stage of 50-year-old Larix gmelinii plantation(P<0.05).From June to September of a year，DOC concentration in organic stratum osmotic water changed with the month，and decreased as a whole.With the growth of plantation，the maximum DOC concentration in organic stratum osmotic water turned to July；at different slope positions，the DOC concentration in the middle and lower slope was higher than that in the upper slope.With forest succession，slope position and seasonal change，DOC concentration under the organic layer changed to a certain extent.

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Last Update: 2019-08-02