Fertilization restructures nematode assemblages by modifying soil pH in croplands of Northeast China
文献类型： 外文期刊
作者： Li, Chunlin 1 ; Wang, Xuefeng 2 ; Chen, Baoyu 3 ; Wang, Lichun 3 ; Xie, Zhonglei 1 ; Wang, Jun 1 ; Yang, Zhenming 1 ;
作者机构： 1.Jilin Univ, Coll Plant Sci, Jilin Prov Engn Lab Plant Genet Improvement, Changchun, Peoples R China
2.Jilin Agr Univ, Coll Resources & Environm, Changchun, Peoples R China
3.Jilin Acad Agr Sci, Inst Agr Resources & Environm Res, Key Lab Plant Nutr & Agroenvironm Northeast Reg, MOA, Changchun, Peoples R China
关键词： long-term fertilization; soil type; soil acidification; nematode assemblage; Northeast China
期刊名称：FRONTIERS IN ENVIRONMENTAL SCIENCE （ 影响因子：4.6； 五年影响因子：5.3 ）
ISSN：
年卷期： 2023 年 11 卷
页码：
收录情况： SCI
摘要： Fertilization is an effective measure to ensure crop yield and food security in modern intensive agriculture. However, the long-term application of mineral fertilizers may lead to soil acidification, consequently affecting soil organisms. Few studies have focused on the effects of mineral fertilizer application on nematode assemblages in various soil types. Soil chemical properties and nematode assemblages were investigated in seven fields at the China Cultivated Land Quality Monitoring Site in Jilin Province, China, to determine the relationship between soil properties (especially soil pH) and soil nematode assemblages and evaluate the effects of mineral fertilizer application on different soil types (e.g., luvisols, fluvisols, gleysols, phaeozems, and chernozems). In all the fields, the soil pH was 0.06-1.00 units lower in the fertilized plots than in the control plots. A total of 8,230 nematode individuals representing 21 nematode genera were identified, with Paraphelenchus being the most abundant genus (relative abundance of 27.93%). Plant parasites were the leading trophic group, accounting for over 50% of the nematode assemblage. For phaeozems, the abundance of total nematodes and the relative abundance of plant parasites were lower in the fertilized plots than in the control plots. Principal component analysis (PCA) was used to distinguish the structures of the nematode assemblages after fertilization in fluvisols and phaeozems but not in the other types of soil. Soil pH was significantly correlated with the nematode assemblage in phaeozems compared to the different soil types. These results demonstrate that the long-term application of mineral fertilizers can lead to soil acidification and negatively affect cropland soil nematode assemblages.
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