Hot Spots Of Soil Respiration In A Seasonally Dry Tropical Forest In Southern Vietnam: A Brief Study Of Spatial Distribution
https://doi.org/10.24057/2071-9388-2018-87
Abstract
Many studies report asymmetrical spatial distribution of soil respiration caused by presence of areas with significantly higher emission rates (so-called hot spots). For seasonally dry tropical forest soil respiration was measured on 1 ha plot with 20m, 5m and 1 m scale in the first half of dry season. 457 measurements made in 9 series at 54 sampling points. The results suggest that lognormal spatial distribution model appears to be much more supported rather than the normal one. A statistical method proposed for estimation the mean value and its confidence interval of lognormally distributed data. The mean emission rate E(RS) for the lognormal distribution amounted to 4.28 µmol m-2 s-1, the 95% confidence interval is 3.93 to 4.76 µmol m-2 s-1. However, the standard sample mean can be used as an estimator of the mean of lognormally distributed values of soil respiration if their coefficient of variance remains approximately the same as in our study (CV=0.35). Based on the data obtained and literature sources, recommendations are given on the number of sampling points for estimating the spatial average value with a given accuracy.
Keywords
Supporting agencies: The study was funded by RFBR and Russian Geographical Society according to the research project № 17-05-41127 and partially was supported the Presidium of the Russian academy of sciences, Programs № 51 «Climate change: causes, risks, consequences, problems of adaptation and regulation» and № 41 “Biodiversity of natural systems and biological resources of Russia
About the Authors
Vitaly K. Avilov
A.N. Severtsov Institute of Ecology and Evolution RAS; Joint Russian-Vietnamese tropical research center, Soutern branch
Russian Federation
Moscow; Ho Chi Minh city, Vietnam.
Russian Federation
Moscow; Ho Chi Minh city, Vietnam.
Dmitry G. Ivanov
A.N. Severtsov Institute of Ecology and Evolution RAS; Joint Russian-Vietnamese tropical research center, Soutern branch
Russian Federation
Moscow; Ho Chi Minh city, Vietnam.
Russian Federation
Moscow; Ho Chi Minh city, Vietnam.
Konstantin K. Avilov
Marchuk Institute for Numerical Mathematics RAS
Russian Federation
Moscow.
Russian Federation
Moscow.
Ivan P. Kotlov
A.N. Severtsov Institute of Ecology and Evolution RAS; Joint Russian-Vietnamese tropical research center, Soutern branch
Russian Federation
Moscow; Ho Chi Minh city, Vietnam.
Russian Federation
Moscow; Ho Chi Minh city, Vietnam.
Nguyen Van Thinh
Joint Russian-Vietnamese tropical research center, Soutern branch
Viet Nam
Ho Chi Minh city.
Viet Nam
Ho Chi Minh city.
Do Phong Luu
Joint Russian-Vietnamese tropical research center, Soutern branch
Viet Nam
Ho Chi Minh city.
Viet Nam
Ho Chi Minh city.
Julia A. Kurbatova
A.N. Severtsov Institute of Ecology and Evolution RAS
Russian Federation
Moscow.
Russian Federation
Moscow.
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Review
For citations:
Avilov V.K., Ivanov D.G., Avilov K.K., Kotlov I.P., Thinh N.V., Luu D.P., Kurbatova J.A. Hot Spots Of Soil Respiration In A Seasonally Dry Tropical Forest In Southern Vietnam: A Brief Study Of Spatial Distribution. GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY. 2019;12(2):173-182. https://doi.org/10.24057/2071-9388-2018-87
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