多通道土壤呼吸长期自动测量系统的集成与性能测试

doi:10.11707/j.1001-7488.20110926

Scientia Silvae Sinicae ›› 2011, Vol. 47 ›› Issue (9): 153-157.doi: 10.11707/j.1001-7488.20110926

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Integration and Performance Test of an Automatic Multi-channel Long-term Soil Respiration Measurement System

Gao Jun¹, Han Guanglu², Huang Binxiang², Shi Shengjin², Jia Changrong³, Ren Yingfeng³

1. Research Institute of Forestry, CAF Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration Beijing 100091;2. College of Resources and Environmental Sciences, China Agricultural University Beijing 100094;3. Dagouhe National Forest Farm of Jiyuan, Henan Province Jiyuan 454650

Received:2010-04-08 Revised:2011-07-25 Online:2011-09-25 Published:2011-09-25

Abstract

Abstract:

On the basis of international research of soil respiration monitoring technology, an automatic eight-channel long-term soil respiration measurement system was developed by integrating dynamic chamber and infrared gas analyzer. The reliability of the automatic multi-channel chamber system was comparatively tested with LI-8100 in a Robinia pseudoacacia stand at the Xiaolangdi Forest Ecosystem Research Station. The results showed that: The air-tightness, stability and reliability of this system meet the design requirements. The system was able to be used to make automatic, continuous and multi-points measurements that were influenced in significanthy by natural environments. The tendency of diurnal variation of soil respiration rate tested by the automatic multi-channel chamber system was similar with that measured by LI-8100, The measured results of different chambers still had differences. It’s possibly due to spatial heterogeneity of soil respiration.

Key words: multi-channel, soil respiration, automatic long-term observation

CLC Number:

S714
S151.9

Gao Jun;Han Guanglu;Huang Binxiang;Shi Shengjin;Jia Changrong;Ren Yingfeng. Integration and Performance Test of an Automatic Multi-channel Long-term Soil Respiration Measurement System[J]. Scientia Silvae Sinicae, 2011, 47(9): 153-157.

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Integration and Performance Test of an Automatic Multi-channel Long-term Soil Respiration Measurement System

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