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Comparison among Different Rewetting Strategies of Degraded Agricultural Peaty Soils: Short-Term Effects on Chemical Properties and Ecoenzymatic Activities
Agronomy ( IF 3.949 ) Pub Date : 2020-07-27 , DOI: 10.3390/agronomy10081084
Vittoria Giannini , Eleonora Peruzzi , Grazia Masciandaro , Serena Doni , Cristina Macci , Enrico Bonari , Nicola Silvestri

In 2013, a pilot experimental field of about 15 ha was set up within the basin of Lake Massaciuccoli (Tuscany, Italy) in order to compare different management strategies—a paludicultural system (PCS), a constructed wetland system (CWS), a nearly-natural wetland system (NWS)—for peatland restoration after almost a century of drainage-based agricultural use (CS). After five years, changes in peat soil quality were investigated from a chemical, biochemical, and ecoenzymatic perspective. The soil in CS was mainly characterized by oxidant conditions, higher content of overall microbial activity, low levels of easily available phosphorus for vegetation, and medium total carbon content ranging from 25.0% to 30.7%. In PCS, the levels of total carbon and the content of bioavailable P were higher, while the oxidant conditions were lower compared to the other systems. As expected, the soils in CWS and NWS were characterized by the most reduced conditions and by the highest levels of arylsulphatase activity. It was noteworthy that soils in the NWS systems were characterized by the highest level of nonavailable P. Outputs from ecoenzymatic activity confirmed the physico-chemical and biochemical results.

中文翻译:

退化农业泥炭土不同湿润策略之间的比较:对化学性质和生态酶活性的短期影响

2013年,在Massaciuccoli湖(意大利托斯卡纳)的流域内建立了一个约15公顷的试验性实验场,以比较不同的管理策略-古土壤系统(PCS),人工湿地系统(CWS),近乎-天然湿地系统(NWS)-经过近一个世纪的排水农业利用(CS)后的泥炭地恢复。五年后,从化学,生物化学和生态酶的角度研究了泥炭土壤质量的变化。CS的土壤主要特点是氧化剂条件,总体微生物活性含量较高,植被中易利用的磷含量较低,总碳含量介于25.0%至30.7%之间。在PCS中,总碳水平和可生物利用的P含量较高,而氧化剂条件则低于其他系统。不出所料,CWS和NWS的土壤特征是条件最减轻,芳基硫酸酯酶活性最高。值得注意的是,NWS系统中的土壤以最高水平的不可用磷为特征。生态酶活性的输出证实了其理化和生化结果。
更新日期:2020-07-27
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