Multiple timescale variations and controls of soil respiration in a tropical dry dipterocarp forest, western Thailand

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Hanpattanakit P., Leclerc M.Y., Mcmillan A.M.S., Limtong P., Maeght J.-L., Panuthai S., Inubushi K., Chidthaisong A.

ผู้เผยแพร่: Springer

ปีที่เผยแพร่ (ค.ศ.): 2015

วารสาร: Plant and Soil (0032-079X)

Volume number: 390

Issue number: #

หน้าแรก: 167

หน้าสุดท้าย: 181

จำนวนหน้า: 15

นอก: 0032-079X

eISSN: 1573-5036

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939981733&doi=10.1007%2fs11104-015-2386-8&partnerID=40&md5=8b8d8281892137cd9b2a568c166c7cf1

ภาษา: English-Great Britain (EN-GB)

ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์

บทคัดย่อ

Aim: This study aims to improve our understanding of temporal variations and controlling factors of soil respiration (Rs) and its components (microbial respiration or Rm and root respiration or Rb) in an Asian tropical seasonal forest at diurnal, seasonal and annual timescales in relation to biotic and abiotic controls.Methods: Rs was studied by the trenching method in a seasonal dry diptercarp forest, western Thailand. An automated soil chamber system was used to produce hourly data of Rs during 2008–2011. Analysis of Rs in relation to both biotic and abiotic factors was carried out to understand its temporal variations at different timescales.Results: Rm was the main contributor to overall magnitude and variability of Rs. Soil temperature alone was the main driver of diurnal variation, while the combination of soil moisture and soil temperature determined the seasonal variations. The amount of Rs was also related to the fine root (<2 mm) and microbial biomass at seasonal timescales. Due to the small inter-annual variations in soil temperature and moisture, total soil respiration among the 4 years was not significantly different (p < 0.05). The annual totals for Rs during 2008–2011 were 3.20, 3.89, 3.52, 4.14 kgCO2 m−2 years−1, respectively. The 4-year average ratio of Rm (trenched) to Rs (untrenched) was 66 ± 4 %.Conclusion: Rm plays a crucial role in determining the magnitude (large ratio between Rm and Rs) and temporal variations of Rs. In this forest ecosystem, high seasonal variations in Rs were observed and were mainly attributed to the response of Rm to moisture. © 2015, Springer International Publishing Switzerland.

คำสำคัญ

Dry dipterocarp forest, Heterotrophic and autotrophic respiration, Microbial biomass, Root biomass, Soil respiration, Temporal variations