New Zealand Journal of Agricultural Research abstracts
Effects of land-use regimes on carbon sequestration in the Loess
Plateau, northern China
Xudong Li1
Hua Fu1,*
Xiaodong Li1
Ding Guo1
Xiaoyu Dong1
Changgui Wan1,2
1Key Laboratory of Grassland Agro-ecosystem
Ministry of Agriculture
College of Pastoral Agricultural Science and Technology
Lanzhou University
PO Box 61
Lanzhou 730000, China
2Department Range Wildlife and Fisheries
Management
Texas Tech University
Lubbock
Texas 79409, USA
*Corresponding author: fuhua@lzu.edu.cn
Abstract The effects of different land-use
regimes on C
sequestration in the terrestrial ecosystems were investigated in the
Loess Plateau. We found that the surface soil (0–10 cm) was more active
at sequestering carbon after land had been used as grassland. When
cropland was converted to grassland, C storage in surface soil
(0–10 cm) increased. Grazing exclusion led to vegetation and soil
restoration, thus increasing the sequestration of atmospheric
C. Intensive cultivation led to a decline of soil organic carbon
content in the surface soil of cropland. Long-term application of
organic manure accompanied with moderate chemical fertiliser can
greatly enhance the C storage in the soil layer below the tilled layer
in cropland. In this region, both grassland and cropland can contribute
to C sequestration when proper management practice is implemented.
Keywords carbon sequestration; carbon
storage; cropland;
grassland; loess plateau
A07049; Online publication date 13 March 2008; Received 23 June
2007; accepted 31 January 2008
New Zealand Journal of Agricultural Research, 2008, Vol. 51:
45–52
0028–8233/08/5101–0045 © The Royal Society of New Zealand 2008
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