Effect of Different Land Uses (Mature and Young Fir Stands-Pasture and Agriculture Sites) on Soil Organic Carbon and Total Nitrogen Stock Capacity in Kastamonu Region
Öz
Land use strongly influences soil properties, and
unsuitable practices lead to degradation of soil and environmental quality.
Main aim of this study was to assess the impact of different land uses on some
soil properties, soil organic carbon (C) and total nitrogen (N) contents and
stock capacities in Kastamonu, Turkey. Mature and young fir stands and adjacent
pasture and agriculture sites were used to study the differences in some soil
properties and soil organic C and N contents and stock capacities. Mineral soil
samples were taken from two soil depths (the upper soil part 0-10 cm and the
lower soil part 10-20 cm), and analysed for pH, texture, water holding capacity
(WHC), salt, lime, organic matter (OM), P and K concentrations, total soil
organic C and total N content, and stock capacities. Results showed that for the soil upper part, the agriculture site had
the lowest clay, silt, WHC, pH, P, K and OM, whereas it had the highest sand
content. Most of these soil factors were highest in the soil from mature fir
stands. As for the lower soil part, there were no clear indications among the
land-use types. However, the agriculture site had the highest clay, silt and
soil pH, whereas the pasture site showed the lowest clay, silt, P and K
contents. The mature and young fir stands always showed the highest mean soil C
and N contents and stock capacities either at the upper or the lower soil
parts, followed by the pasture and the agriculture sites. However, all soil
depth was considered (0-20 cm), mean soil organic C stock capacity was highest
for the pasture site (50.2 Mg C ha-1), followed by the young fir
site (48.6 Mg C ha-1), the mature fir site (47.4 Mg C ha-1),
and the agriculture site (32.3 Mg C ha-1). Mean soil total N stock capacity
was highest for the young fir site (5.61 Mg N ha-1), followed by the
pasture site (5.09 Mg N ha-1), the mature fir site (4.45 Mg N ha-1),
and the agriculture site (3.33 Mg N ha1).
Anahtar Kelimeler
Carbon and nitrogen stock,Forest,Pasture,Agriculture site,Land use type
Kaynakça
- Allen S.E. 1989. Chemical Analysis of Ecological Materials. Blackwell Scientific Publications, Oxford.
- Arevalo C. B. M., Bhatti J. S., Chang S. X., Sidders D. 2009. Ecosystem carbon stocks and distribution under different land-uses in north central Alberta, Canada. Forest Ecology and Management 257, 1776-1785.
- Batlle-Aguilar J., Brovelli A., Porporato A., Barry D. A. 2011. Modelling soil carbon and nitrogen cycles during land use change. A review. Agronomy for Sustainable Development 31(2): 251–274
- Baumert K., Pershing J., Herzog T., Markoff M. 2004. Climate Data: Insights and Observations. Pew Center on Global Climate Change. World Resources Institute, Arlington, VA.
- Bouyoucos G. J. 1962. Hydrometer method improved for making particle size analysis of soils. Agronomy Journal 54, 464-465.
- Bruce J.P., Frome M., Haites E., Janzen H., Lal R., Paustian K. 1999. Carbon sequestration in soils, J. Soil Water Conservation. 54, 382–389.
- Curtis P.-S., Hanson P.-J., Bolstad P., Barford C., Randolph J.-C., Schmid H.-P., Wilson K.-B. 2002. Biometric and eddy covariance based estimates of annual carbon storage in five eastern North American deciduous forests. Agriculture and Forestry Meteorology 113, 3–19.
- Davidson E. A., Ackerman, I. L. 1993. Changes in soil carbon inventories following cultivation of previously untilled soils. Biogeochemistry 20, 161–193.
- de Moraes J.F.L., Volkoff B., Cerri C.C., Bernoux M. 1996. Soil properties under Amazon forest and changes due to pasture installation in Rondônia, Brazil, Geoderma 70, 63–81.
- Dumanski J. 2004. Carbon sequestration, soil conservation, and the Kyoto protocol: summary of implications. Climatic Change 65, 255–261.