caa a22 4500 467904030 CHVBK 20180406152828.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1007/s10661-005-9158-5 doi (NATIONALLICENCE)springer-10.1007/s10661-005-9158-5 Spatial Variability of Soil Organic Carbon in Relation to Environmental Factors of a Typical Small Watershed in the Black Soil Region, Northeast China [Elektronische Daten] [Wei Jian-Bing, Xiao Du-Ning, Zhang Xing-Yi, Li Xiu-Zhen, Li Xiao-Yu] A total of 292 soil samples were taken from surface soil (0-20 cm) of a typical small watershed-Tongshuang in the black soil region of Heilongjiang province, northeast China in June 2005 for examining the concentration of soil organic carbon (SOC). Spatial variability of SOC in relation to topography and land use was evaluated using classical statistics, geostatistics and geographic information system (GIS) analyses. The objective of this study was to provide a scientific basis for land management targeting at improving soil quality in this region. Classical statistical analysis results indicated that the variability of SOC was moderate (C V = 0.30). Slope position and land use types were discriminating factors for its spatial variability. Geostatistics analyses showed that SOC had a strong spatial autocorrelation, which was mainly induced by structural factors. Mean concentration of SOC in surface soil was 2.27% in this watershed, which was a very low level in the northern black soil region of northeast China. In this small watershed, present soil and water conservation measures played an important role in controlling soil loss. But SOC's restoration was unsatisfactory. Nearly three-quarters of the area had worrisome productivity. How to improve SOC concentration targeting at soil fertility is a pressing need in the future. Springer Science+Business Media, Inc., 2006 black soil region of northeastern China nationallicence Geostatistics nationallicence GIS nationallicence land use nationallicence soil organic carbon nationallicence topographic factors nationallicence Jian-Bing Wei Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China aut Du-Ning Xiao Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China aut Xing-Yi Zhang Northeast Institute of Geography and Agricultural ecology, Chinese Academy of Sciences, 150040, Harbin, China aut Xiu-Zhen Li Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China aut Xiao-Yu Li Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China aut Environmental Monitoring and Assessment Springer Netherlands 121/1-3(2006-10-01), 597-613 0167-6369 121:1-3<597 2006 121 10661 https://doi.org/10.1007/s10661-005-9158-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-005-9158-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jian-Bing Wei Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China aut NATIONALLICENCE 700 1- Du-Ning Xiao Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China aut NATIONALLICENCE 700 1- Xing-Yi Zhang Northeast Institute of Geography and Agricultural ecology, Chinese Academy of Sciences, 150040, Harbin, China aut NATIONALLICENCE 700 1- Xiu-Zhen Li Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China aut NATIONALLICENCE 700 1- Xiao-Yu Li Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Springer Netherlands 121/1-3(2006-10-01), 597-613 0167-6369 121:1-3<597 2006 121 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer