We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effects of harvest disturbance on soil CH<sub>4</sub> flux in a secondary hardwood forest in Northeast China.
- Authors
SUN Hai-long; ZHANG Yan-dong
- Abstract
From June, 2007 to October, 2009, a measurement with static chamber/gas chromatograph techniques was conducted on the soil CH4 flux in a typical secondary hardwood forest in Northeast China under the effects of different harvest disturbances, i. e. , uncut (control), clear cutting (including both farming and reforestation after clear cutting), 50% stand volume removed, and 25% stand volume removed. In all of the four treatments, the soil was the sink of atmospheric CH4, but cutting decreased the soil CH4 uptake flux, with the order of uncut (-85. 03 μg CH4•m-2 •h-1 ) > 50% stand volume removed (-80. 31 μg CH4 •m-2 •h-1 ) > 25% stand volume removed (-70. 97 μg CH4 •m-2h-1) > farming after clear cutting (-65. 57 μg CH4•m-2•h-1) > reforestation after clear cutting (-62. 02 μg CH4•m-2•h-1). During the study period, the seasonal patterns of the soil CH4 uptake flux in all treatments were similar, with a higher value in growth season and a lower one in winter. After the harvest disturbance, the soil temperature, humidity, and NO3--N, and NH4+-N contents were all increased, and the soil CH4 flux had a significant quadratic correlation with soil temperature, and a negative linear correlation with soil moisture content. It was suggested that the increase of the soil moisture, NO3--N, and NH4+-N contents after the forest harvest was the main cause of the decrease of the soil CH4 uptake flux.
- Publication
Yingyong Shengtai Xuebao, 2013, Vol 24, Issue 10, p2737
- ISSN
1001-9332
- Publication type
Article