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Estimation of Determinants of Farmland Abandonment and Its Data Problems
Article

Could Land Abandonment with Human Intervention Benefit Cropland Restoration? From the Perspective of Soil Microbiota

1
Institute of Land and Urban-Rural Development, Zhejiang University of Finance and Economics, Hangzhou 310058, China
2
School of Public Affairs, Zhejiang University, Hangzhou 310058, China
*
Author to whom correspondence should be addressed.
Academic Editors: Manuel Pulido Fernádez and Ilan Stavi
Land 2021, 10(10), 1049; https://doi.org/10.3390/land10101049
Received: 12 August 2021 / Revised: 3 October 2021 / Accepted: 3 October 2021 / Published: 6 October 2021
Although agricultural land abandonment (LA) is accompanied by land degradation, it could be considered a kind of self-rehabilitation. Studies have shown that long-term LA has profound ecological and environmental benefits, whereas few studies have compared LA with human intervention (HI), which involves planting and fertilization in agroecosystem restoration. Here, we established four different scenarios based on local livestock husbandry, including LA without HI, LA with slight human intervention (HIS), medium human intervention (HIM), and intensive human intervention (HII). LA experiments were conducted for 3 years and repeatedly sampled three times. The soil bacterial and fungal communities were determined to present the ecological impacts. In this study, LA and HIS could save soil inorganic carbon and total calcium (Ca) contents and benefit soil mycorrhizal fungi and plant growth-promoting rhizobacteria. LA and HIM benefited some microbial communities associated with complicated organic compounds. Human interference methods did not significantly increase soil nutrients after 3 years of farmland abandonment. However, indigenous vegetation increased the risk of plant diseases based on soil microbial communities. Forage grass may control the risk, and HIS was a cost-effective scenario in our study. Moreover, we should maintain a cautious attitude toward HII to prevent excessive intervention. View Full-Text
Keywords: agricultural land abandonment; human intervention; cropland; bacterial community; fungal community agricultural land abandonment; human intervention; cropland; bacterial community; fungal community
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    Doi: 10.5281/zenodo.5516762
    Link: https://zenodo.org/record/5516762#.YUgIWi21FBZ
    Description: Figure S1 The study area and experimental plots. Figure S2 The correlation analysis of soil properties in each year, based on Spearman’s Rank correlation analysis. Only significant Spearman’s coefficients are shown (p < 0.05). Figure S3 Mantel test between soil properties and microbial community structure. *, ** and *** are used to show statistical significance at the 0.05, 0.01, and 0.001 level, respectively. Figure S4 The results of linear discriminant analysis effect size (LEfSe) on bacterial and fungal communities. The cutoff of LDA score is 2. Figure S5 The relative importance ranks of edaphic and human factors on microbial communities, based on %IncMSE of random forests model.
MDPI and ACS Style

Li, G.; He, T.; Zhang, M.; Wu, C. Could Land Abandonment with Human Intervention Benefit Cropland Restoration? From the Perspective of Soil Microbiota. Land 2021, 10, 1049. https://doi.org/10.3390/land10101049

AMA Style

Li G, He T, Zhang M, Wu C. Could Land Abandonment with Human Intervention Benefit Cropland Restoration? From the Perspective of Soil Microbiota. Land. 2021; 10(10):1049. https://doi.org/10.3390/land10101049

Chicago/Turabian Style

Li, Guangyu, Tingting He, Maoxin Zhang, and Cifang Wu. 2021. "Could Land Abandonment with Human Intervention Benefit Cropland Restoration? From the Perspective of Soil Microbiota" Land 10, no. 10: 1049. https://doi.org/10.3390/land10101049

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