Phosphorus is more effective than nitrogen in restoring plant communities of heavy metals polluted soils

Huang, Jingxin; Wang, Chenjiao; Qi, Lanlan; Zhang, Xiaole; Tang, Guangmei; Lei, Li; Guo, Jiahang; Jia, Yujing; Dou, Xiaohui; Meng, Lei

doi:10.1016/j.envpol.2020.115259

Cited by 47 publications

(20 citation statements)

References 55 publications

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“…We predicted that the richness and abundance would increase in the two different years. These variations might be associated with changes in forest ecosystem resources and the quality of soil abiotic properties [29].…”

Section: Introductionmentioning

confidence: 99%

Plant Diversity and Soil Nutrients in a Tropical Coastal Secondary Forest: Association Ordination and Sampling Year Differences

Yaseen

Fan²,

Zhou³

et al. 2022

Forests

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Studying the patterns of changes in species diversity and soil properties can improve our knowledge of community succession. However, there is still a gap in understanding how soil conditions are related to plant diversity in tropical coastal secondary forests. We sampled plant diversity and soil nutrients spanning two different years (2012 and 2019) to assess the patterns of species diversity and relationships of soil nutrients and species diversity on Hainan Island, southern China. Results showed that the soil pH and total nitrogen (TN) significantly decreased while the soil organic matter (OM) and total phosphorus (TP) significantly increased from 2012 to 2019. Plant species diversity was significantly higher in 2012 than in 2019, and the dominant species significantly changed in two different years. Using multiple regression analysis, we determined that soil TP and TN were significantly related to plant diversity in 2012 and 2019, respectively. Using CCA analysis, TN and OM were the strongest predictors for dominant species in 2012, whereas the soil TP and TN were the strongest predictors for dominant species in 2019. Our findings show a significant change in plant diversity and dominant species after 7 years of development in the tropical coastal secondary forest. The patterns of plant diversity and soil nutrients increase our knowledge of forest restoration in coastal areas.

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Section: Introductionmentioning

confidence: 99%

Plant Diversity and Soil Nutrients in a Tropical Coastal Secondary Forest: Association Ordination and Sampling Year Differences

Yaseen

Fan²,

Zhou³

et al. 2022

Forests

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“…It was reported that N addition increased the contents of proline and peroxidase in plants, and enhanced the drought resistance and growth performance of plants [28]. Our previous study also found that N and P fertilizer in low level N and P soils could restore plant diversity of heavy metal polluted soils [21], possibly due to that N and P fertilizer increased the tolerance of plants to heavy metal stress [29]. For instant, Zhang et al [30] found that increasing NO 3 − can improve the tolerance of Arabidopsis thaliana to Cd stress.…”

Section: Introductionmentioning

confidence: 56%

“…Soil heavy metal pollution is widespread and increasingly serious around the world [57]. Heavy metal pollution in low economic value soil such as farmland and abandoned land accounts for a large proportion of polluted soils, which leads to the quality reduction of a variety of agricultural products, harms human health and causes the loss of biodiversity [3,4,21]. Compared with high-cost methods such as leaching and other engineering remediation, the remediation of low economic value soils is usually carried out through phytoremediation.…”

Section: Discussionmentioning

confidence: 99%

“…Application of N and P can signi cantly stimulate plant growth [18,19], and increase the biomass of plant community [20]. N and P fertilizers are inexpensive and easy to obtain, and are commonly used in agricultural production and vegetation restoration of the disturbed ecosystems [21][22][23]. Phytoremediation is usually carried out by harvesting the aboveground biomass of plants, and the application of N in the plant community can increase the aboveground biomass of herbs, shrubs, conifers and broad-leaved plants [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

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Nitrogen and phosphorus fertilization increases the uptake of soil heavy metal pollutants by plant community

Tang

Zhang

et al. 2021

Preprint

Self Cite

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Background: Soil heavy metal pollution is widespread around the world. Heavy metal pollutants are easily absorbed by plants and enriched in food chain, which may harm human health, cause the loss of plant, animal and microbial diversity. Plants can generally absorb soil heavy metal pollutants. Compared with hyperaccumulation plants, non-hyperaccumulator plant communities have many advantages in the remediation of heavy metals pollution in soil. However, the amount of heavy metals absorbed could be less, and the biomass would be reduced under heavy metal pollution. The application of nitrogen (N) and phosphorus (P) is inexpensive and convenient, which can increase the resistance of plants to adversity and promote the growth of plants of heavy metal polluted soils.Methods: We designed a comparative greenhouse experiment with heavy metal contaminated soils, and set up four treatments: CK treatment (soil without fertilizer), N treatment (soil with N addition), P treatment (soil with P addition), and N+P treatment (soil with N and P addition).Results: Our results showed that plant aboveground biomass were 231.17%, 14.84%, 269.86% greater than CK treatment, respectively. N and P fertilizer stimulated plants to allocate more biomass to the aboveground parts. In addition, N treatments significantly reduced the content of Cd in aboveground and belowground biomass of plants (P < 0.05); P fertilizer significantly decreased the content of Cu in aboveground biomass (P < 0.05). N+P treatments significantly reduced the content of Cd, Cu in aboveground and belowground biomass of plants (P < 0.05). Meanwhile, N and N+P significantly increased the accumulation (mg/m2) of Cd, Cu, and Pb in plant aboveground biomass (P < 0.05). N and N+P fertilizer increased aboveground-belowground heavy metals accumulation ratio (P < 0.05), promoting plants to uptake more heavy metal pollution out of soil.Conclusions: N and P fertilizer increased the accumulation of heavy metals in aboveground of the natural plant community and accelerated the absorption of heavy metals by plants, and N fertilizer had a better effect. Our results provide an inexpensive method for remediation of heavy metal pollution in low economic value soils, such as contaminated farmland, abandoned land and mine tailings, etc.

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“…Heavy metal pollution in cultivated soil has attracted more and more attention. Soil heavy metal pollution can reduce plant diversity [ 6 ], cause the pollution of rice and other crops [ 7 ], and affect the evolution of soil microorganisms and their related functional genes [ 8 ]. The concentration of heavy metals in soil is an important factor affecting the quality grading of cultivated land [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Heavy Metal Pollution in Cultivated Land of Different Quality Grades in Yangtze River Delta of China

Wang

Zhu

et al. 2021

IJERPH

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The distribution of heavy metal pollution in cultivated land is closely related to the quality of the cultivated land. In this study, 533 soil samples were collected from cultivated land in the Yangtze River delta region in China for Cd, Pb, and Hg analyses. Spatial statistical analysis was used to study the heavy metal pollution in the cultivated land, and the driving forces of heavy metal distribution in different cultivated land quality subdivisions were analyzed with GeogDetector. The conclusions are as follows: (1) Among the three heavy metals in the study area, the coefficient of variation of Cd is the largest, and that of Pb is the smallest. The proportion of Cd and Hg exceeding the standard value (the standard of level two in GB 15618—2018) is relatively large, both of which are 5%; (2) From the perspective of the spatial distribution of soil heavy metal pollution, only four counties (CX, HN, WY, and LH) were free of heavy metal pollution. Soil heavy metal pollution in AJ, SY, QJ, and DS counties is relatively serious, and the pollution may come from agricultural activities, manufacturing, and prevalent coastal shipping industries in these counties; (3) The heavy metal pollution levels of cultivated land with different quality levels are different. The high-quality cultivated land has no high contamination, while the medium and the general cultivated land both have high contamination. High contamination is related to Cd for medium and general cultivated lands, and to Hg in only general cultivated land; (4) The main driving factors of heavy metal concentration in cultivated soil were GDP, followed by soil organic matter, and pH. These results indicate that the spatial distribution of heavy metal concentration in cultivated soil was affected by the level of economic development, followed by the ecological environment, indicating that human activities had a critical impact on the ecological environment of cultivated land.

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Phosphorus is more effective than nitrogen in restoring plant communities of heavy metals polluted soils

Cited by 47 publications

References 55 publications

Plant Diversity and Soil Nutrients in a Tropical Coastal Secondary Forest: Association Ordination and Sampling Year Differences

Plant Diversity and Soil Nutrients in a Tropical Coastal Secondary Forest: Association Ordination and Sampling Year Differences

Nitrogen and phosphorus fertilization increases the uptake of soil heavy metal pollutants by plant community

Analysis of Heavy Metal Pollution in Cultivated Land of Different Quality Grades in Yangtze River Delta of China

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