Effect of long-term reclamation on soil quality in agricultural reclaimed coastal saline soil, Eastern China

文献类型： 外文期刊

第一作者： Xie, Xuefeng

作者： Xie, Xuefeng;Wu, Tao;Xie, Xuefeng;Pu, Lijie;Zhu, Ming;Pu, Lijie;Zhu, Ming;Xu, Yan;Wang, Xiaohan

作者机构：

关键词： Soil quality index; Minimum data set; TOPSIS methods; Coastal reclamation area; Land use; cover types

期刊名称：JOURNAL OF SOILS AND SEDIMENTS （ 影响因子：3.308； 五年影响因子：3.586 ）

ISSN： 1439-0108

年卷期： 2020 年 20 卷 11 期

页码：

收录情况： SCI

摘要： Purpose The assessment of soil quality related to different reclamation years and land use/cover types is the key parameter to evaluate the success of reclamation activities in coastal saline soil. Materials and methods Soil samples were collected from natural bare flat and coastal wetlands that have been reclaimed for different times (7, 32, 40, and 63 years) to investigate the change in soil quality during the process of reclamation in this study. Soil quality was evaluated using a soil quality index (SQI), which was calculated by the selected minimum dataset (MDS) and the technique for order preference by similarity to ideal solution (TOPSIS) methods. Results and discussion Soil water content (SWC), bulk density (BD), electrical conductivity (EC), and pH were observed significantly decreased whereas soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), urease (URE), and acid and alkaline phosphatase (ACP and ALP) activities notably increased after 60 years of reclamation. However, amylase (AMY) activity increased first and then decreased, and dehydrogenase (DEH) activity showed weak differences within 60 years reclamation. Further, TN, EC, AMY, and ACP activity were in the MDS with 12 soil properties as soil quality indicators. The SQI values varied from 0.05 in the bare flat soils to 0.86 in the soils after 63 years of reclamation and improved with increasing reclamation years. In addition, the SQI values of different land use/cover types were in the order of bare flat (0.07 +/- 0.03) < uncultivated land (0.22 +/- 0.16)

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