Welcome to Chinese Journal of Applied Ecology! Today is Share:

Chinese Journal of Applied Ecology

Previous Articles     Next Articles

Soil carbon and nitrogen storage of different land use types in northwestern Shanxi Loess Plateau.

DONG Yun-zhong, WANG Yong-liang, ZHANG Jian-jie, ZHANG Qiang, YANG Zhi-ping   

  1. (Shanxi Province Key Laboratory of Soil Environment and Nutrient Resources, Institute of Agriculture Environment and Resources Research, Shanxi Academy of Agricultural Sciences,  Taiyuan 030006, China)
  • Online:2014-04-18 Published:2014-04-18

Abstract: The soil organic carbon (SOC) and total nitrogen (TN) storage under five different land use patterns, i.e., poplar and Caragana microphylla plantation, C. microphylla artificial shrubland, poplar plantation, bare land and cropland were studied in the hilly Loess Plateau of northwestern Shanxi. The results showed that the contents, densities and storage of SOC and TN varied remarkably under the different landuse patterns. Soil carbon and nitrogen contents and storage in the 0-20 cm soil layer were significantly higher in the 20-40 cm and 40-60 cm soil layers under each of the five land use patterns. In the same soil layer, the contents and densities of SOC and TN under the five land use patterns were in the order of poplar and C. microphylla plantation > C. microphylla artificial shrubland > poplar plantation > bare land > cropland. The SOC storage in the 0-60 cm soil layer was in the order of poplar and C. microphylla plantation (30.09 t·hm-2) > C. microphylla artificial shrubland (24.78 t·hm-2) > poplar plantation (24.14 t·hm-2) > bare land (22.06 t·hm-2) > cropland (17.59 t·hm-2). Soil TN storage had the same trend as SOC storage, and TN storage in the 0-60 cm soil layer was the highest (4.94 t·hm-2) in poplar and Caragana microphylla plantation, followed by  C. microphylla artificial shrubland (3.53 t·hm-2), poplar plantation  (3.51 t·hm-2), bare land  (3.40 t·hm-2), and cropland (2.71 t·hm-2). Poplar and C. microphylla plantation and C. microphylla artificial shrubland were the good land use patterns in the process of vegetation construction and ecological restoration in the hilly Loess Plateau of northwestern Shanxi.