CCPortal
DOI10.1080/03650340.2019.1626983
Applying statistical methods to map soil organic carbon of agricultural lands in northeastern coastal areas of China
Bian, Zhenxing1; Guo, Xiaoyu1; Wang, Shuai1,2; Zhuang, Qianlai2; Jin, Xinxin1,2; Wang, Qiubing1; Jia, Shuhai1
发表日期2019
ISSN0365-0340
EISSN1476-3567
英文摘要

Soil organic carbon (SOC) is an important indicator to evaluate agricultural soil quality. Precise mapping SOC can help to facilitate soil and environmental management decisions. This study applied multiple stepwise regression (MSR), boosted regression trees (BRT) model, and boosted regression trees hybrid residuals kriging (BRTRK) to map SOC of agricultural lands in Wafangdian City, northeastern China. A 10-fold cross-validation procedure was used to evaluate the performance of the three models. The BRTRK method exhibited the best predictive performance and explained 78% of the total SOC variability. The distribution of SOC was mainly explained by elevation, followed by soil-adjusted vegetation index (SAVI), and topographic wetness index (TWI). We conclude that the BRTRK was the most accurate method in predicting spatial distribution of SOC. In addition, our study indicated that topographic variables as key factors to affect SOC should be considered in future SOC mapping.


WOS研究方向Agriculture
来源期刊ARCHIVES OF AGRONOMY AND SOIL SCIENCE
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/99034
作者单位1.Shenyang Agr Univ, Coll Land & Environm, 120 Dongling Rd, Shenyang 110866, Liaoning, Peoples R China;
2.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
推荐引用方式
GB/T 7714
Bian, Zhenxing,Guo, Xiaoyu,Wang, Shuai,et al. Applying statistical methods to map soil organic carbon of agricultural lands in northeastern coastal areas of China[J],2019.
APA Bian, Zhenxing.,Guo, Xiaoyu.,Wang, Shuai.,Zhuang, Qianlai.,Jin, Xinxin.,...&Jia, Shuhai.(2019).Applying statistical methods to map soil organic carbon of agricultural lands in northeastern coastal areas of China.ARCHIVES OF AGRONOMY AND SOIL SCIENCE.
MLA Bian, Zhenxing,et al."Applying statistical methods to map soil organic carbon of agricultural lands in northeastern coastal areas of China".ARCHIVES OF AGRONOMY AND SOIL SCIENCE (2019).
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