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Changes in soil chemical properties as affected by pyrogenic organic matter amendment with different intensity and frequency

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Changes in soil chemical properties as affected by pyrogenic organic matter amendment with different intensity and frequency

dc.contributor.author	Wang, Ruzhen
dc.contributor.author	Zhang, Yulan
dc.contributor.author	Cerdà Bolinches, Artemi
dc.contributor.author	Cao, Mingming
dc.contributor.author	Zhang, Yongyong
dc.contributor.author	Yin,Jinfei
dc.contributor.author	Jiang, Yong
dc.contributor.author	Chen, Lijun
dc.date.accessioned	2018-04-17T11:25:24Z
dc.date.available	2018-04-17T11:25:24Z
dc.date.issued	2017
dc.identifier.citation	Wang, Ruzhen Zhang, Yulan Cerdà Bolinches, Artemi Cao, Mingming Zhang, Yongyong Yin,Jinfei Jiang, Yong Chen, Lijun 2017 Changes in soil chemical properties as affected by pyrogenic organic matter amendment with different intensity and frequency Geoderma 289 161 168
dc.identifier.uri	http://hdl.handle.net/10550/65735
dc.description.abstract	Pyrogenic organicmatter (PyOM) has long been used as a soil amendment to improve soil physicochemical properties. However, few studies simultaneously investigated both intensities and frequencies of PyOM addition on soil chemical properties of soil base cations, soil pHbuffering capacity (pHBC), and plant availablemicronutrients. In the main food production area of lower Liaohe River Plain in Northeast China, a field manipulation of PyOM addition was initiated in 2013 to examine how the intensities (0, 1%, 3%, and 5% of 0-20 cm soil mass) and frequencies (3% of soil mass applied once versus yearly for 3 years) of PyOM amendment affected soil chemical properties. Higher intensity of PyOM addition significantly increased soil exchangeable Mg (by 24.2%), which was caused by increase of soil pH, soil exchangeable surfaces, and soil organic matter. Plant available Fe, Mn, and Cu were significantly decreased with increasing PyOM addition intensity by up to 39.4%, 50.8%, and 30.0%, respectively, especially under the highest amount of PyOM amendment (5%). This was possibly due to removal of micronutrients with plant biomass or irreversible binding of available micronutrients on PyOM which decreased the extraction efficiency. Under the same amount of PyOM addition (3% in total), higher frequency of PyOM amendment significantly increased soil exchangeable Mg, while lower frequency showed no impact as compared to control plots (CK). Higher frequency of PyOM amendment significantly decreased plant available Mn and Cu as compared to both lower frequency and CK treatments. Both the intensity and frequency of PyOMaddition significantly increased soil pH but showed no influence on soil pHBC. Our results showed that exchangeableMg increased but availableMn and Cu decreasedwith both PyOMamendment intensity and frequency. Even though PyOM amendment could enrich soil base cations, it might cause deficiency of available micronutrients and pose a threat to plant productivity in agroecosystems.
dc.language.iso	eng
dc.relation.ispartof	Geoderma, 2017, vol. 289, p. 161-168
dc.subject	Ecologia dels sòls
dc.title	Changes in soil chemical properties as affected by pyrogenic organic matter amendment with different intensity and frequency
dc.type	journal article	es_ES
dc.date.updated	2018-04-17T11:25:24Z
dc.identifier.doi	10.1016/j.geoderma.2016.12.006
dc.identifier.idgrec	125695
dc.rights.accessRights	open access	es_ES