Effect of Forest Management on Soil Respiration of Pinus massoniana

• Published in: Forest research (Beijing) Vol. 28; no. 5
• Main Authors: Lei, Lei, Xiao, Wen-fa, Zeng, Li-xiong, Huang, Zhi-lin, Gao, Shang-kun, Tan, Ben-wang
• Format: Journal Article
• Language: Chinese
• Published: 01.10.2015
• Subjects: Pinus massoniana
• ISSN: 1001-1498

Aerially seeded Pinus massoniana forest in the Three Gorges Reservoir area with different management treatments, including shrubs-cutting plus residue removal, harvest I(cutting intensity 15%, stem-only harvesting without residue removal), harvest II(cutting intensity 70%, harvest type as harvest I) and the control, were surveyed to measure the total soil respiration rates over a year by using LI-8100 system. The influence of various forest managements on soil respiration was discussed and the reasons causing the variability of soil respiration were analyzed. The results showed that: the annual soil respiration of forests with different treatments was 1.82 + or - 0.07 mu mol times m- 2s-1(shrubs-cutting), 2.1 8 + or - 0.05 mu mol times m- 2s-1(control), 2.37 + or - 0.07 mu mol times m- 2s-1(harvest I), and 2.86 + or - 0.1 mu mol times m- 2s-1(harvest II). The harvest intensity was positively related to soil respiration increment, soil respiration of all the harvest treatment reached the maximum in July and Au