Response of Soil Microbial Biomass and Enzyme Activity to Soil Fertilization in an Eroded Farmland of Chinese Mollisols

Sui, Yueyu; Jiao, Xiaoguang; Liu, Xiaobing; Zhang, Xingyi; Ding, Guangwei

doi:10.1080/00103624.2013.811525

Cited by 14 publications

(16 citation statements)

References 20 publications

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“…Plantation trees cover immediately influences the understory composition and available light quantity, which affects carbon distribution and the soil microbial community (Mitchell et al, 2012). In addition to this, long-term fertilization also adversely affects microbial populations (Sui et al, 2013). Additionally, PSME had increased soil Chao1 index, ACE index of soil bacteria, and our observations agreed with the previous research that suggested fencing of degraded steppe significantly increased bacterial Chao1 index, ACE index compared with free grazing (Zhou et al, 2012).…”

Section: Effects Of Afforestation Combined With Enclosure Management supporting

confidence: 89%

Peer Review #1 of "Effects of afforestation with Pinus sylvestris var. mongolica plantations combined with enclosure management on soil microbial community (v0.1)"

2020

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Grazing and litter removal can alter understory structure and composition after afforestation, posing a serious threat to sustainable forest development. Enclosure is considered to be an effective measure to restore degraded forest restoration. However, little is known about the dynamics of soil nutrients and microbial communities during the forest restoration process. In the present study, the effects of Arachis hypogaea (AH), Pinus sylvestris var. mongolica (PSM), and Pinus sylvestris var. mongolica with enclosure (PSME) on soil chemical properties and soil microbial communities were studied in Zhanggutai, Liaoning Province, China. The results showed that PSME could remarkably contribute to improve soil total C, total N, and total P compared to PSM and AH. Additionally, PSM could clearly increase the soil bacterial community diversity and fungal Chao1 index and ACE index. Additionally, PSME could further increase soil Chao1 index and ACE index of soil bacteria. Soil total C, total N and available N were the main factors related to soil microbial diversity. Actinobacteria and Ascomycota were the predominant bacterial and fungal phyla, respectively. Specifically, PSME could increase the relative abundances of Actinobacteria, Gemmatimonadetes, Ascomycota and Mortierellomycota and decreased the relative abundances of Acidobacteria, Chloroflexi and Basidiomycota than PSM. PSM and PSME could clearly change soil microbial communities compared with AH, and PSME could remarkably shift soil fungal communities than PSM. What's more, the soil microbial community structure were affected by multiple edaphic chemical parameters. It can be seen that afforestation combined with enclosed management potentially regulate microbial properties through shifting the soil properties. This study can provide new ideas for further understanding the impact of enclosure on Pinus sylvestris var. Mongolica and provide theoretical support for the management of Pinus sylvestris var. Mongolica.

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Section: Effects Of Afforestation Combined With Enclosure Management supporting

confidence: 89%

Peer Review #1 of "Effects of afforestation with Pinus sylvestris var. mongolica plantations combined with enclosure management on soil microbial community (v0.1)"

2020

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“…Soil erosion and associated yield suppression have been a serious problem threatening agriculture sustainability in this region for decades 35 , 36 . Manure has been used to restore eroded Mollisols and soil quality of eroded Mollisols has been improved largely 28 , 37 – 39 . Moreover, the application of cattle manure can even recover the yields on eroded Mollisols to normal levels 40 .…”

Section: Introductionmentioning

confidence: 99%

Responses of Labile Organic Nitrogen Fractions and Enzyme Activities in eroded Mollisols After 8-year Manure Amendment

Chen

Jiao

et al. 2018

Sci Rep

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Soil erosion will cause a degradation in soil nitrogen supplying capacity (SNSC) and manure amendment is an effective way to restored eroded soils. Both labile fractions of soil organic N (SON) and N transformation enzymes are indicators for SNSC, but the effect of manure amendments on labile SON fractions and the relationship between labile SON fractions and enzyme activities remains unclear. In this study, five degrees of erosion were simulated in Mollisols (removal of 0, 5, 10, 20 and 30 cm of topsoil) to analyse the changes in labile SON fractions and nitrogen transformation enzyme activities after 8-year manure amendment. We found that soil total N (TN), labile SON fractions and enzyme activities all increased after manure amendments. The largest labile SON fraction was particle organic nitrogen (POM-N) and the second was light fraction organic nitrogen (LFOM-N), which accounted >60% for TN in total. Correlation analysis showed that both urease and protease activities were significantly correlated with POM-N, LFOM-N, microbial biomass N and dissolvable organic N, indicating that both urease and protease activities can be used to predict labile SON pools and enzyme activities worked similarly in indicating SNSC with labile SON fractions. Altogether, 8-year manure amendment could recover SNSC of lightly eroded Mollisols to natural levels, i.e. erosion depths at 5 cm and 10 cm; however, it is not able to recover SNSC in Mollisols suffering severe erosion.

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“…Although LOC and POC have less turnover time compared to recalcitrant C, and are easy to be used by soil microorganism, our study showed that CO 2 emission had no significant relationship with LOC and POC. The results can be explained by that LOC and POC fractions were majorly distributed in the surface or subsoil layers, even weak soil erosion can decline and diminish them (Gregorich et al, 1996; Sui et al, 2013b). However, our findings indicate MBC and DOC directly enhanced cumulative CO 2 emissions, which was reflected in the positive correlation between MBC and CO 2 emission ( R 2 = 0.4661**, n = 15); between DOC and CO 2 emissions ( R 2 = 0.2542*, n = 15).…”

Section: Discussionmentioning

confidence: 99%

“…Previous research indicated that LOC, MBC, POC, and DOC fractions in the surface and subsoil significantly declined with soil erosion (McHunu and Chaplot, 2012; Sui et al, 2013b). Although LOC and POC have less turnover time compared to recalcitrant C, and are easy to be used by soil microorganism, our study showed that CO 2 emission had no significant relationship with LOC and POC.…”

Section: Discussionmentioning

confidence: 99%

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Impact of Eight‐Year Topsoil Removal and Soil Amendments on Soil Carbon Dioxide Emission in an Eroded Chinese Mollisols

et al. 2015

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Soil erosion is a serious environmental issue. Information in the severity of soil erosion on CO 2 emission is limited. A soil erosion simulation experiment was used to examine the infl uence of topsoil removal and cattle manure amendment on soil CO 2 emission for a cultivated Mollisols in Northeast China. Soil CO 2 fl ux was determined during corn (Zea mays L.) growing season. Our results showed that aft er 8-yr treatment, topsoil removal decreased CO 2 emission in the order of 30 cm < 10 cm < 5 cm < 20 cm < 0 cm under chemical fertilizer treatment alone and 20 cm < 10 cm < 30 cm < 5 cm < 0 cm for cattle manure addition. At the same erosion depth, cattle manure addition increased soil CO 2 emission compared to chemical fertilizer alone treatment. During growing season, the CO 2 fl ux pattern changed from one peak in chemical fertilizer alone treatment to two peaks in cattle manure addition treatments. In the chemical fertilizer alone system, only microbial biomass carbon (MBC) and dissolved organic carbon (DOC) fractions were signifi cantly correlated with total CO 2 emission. However, cattle manure addition changed the relationship between soil C fraction and CO 2 emission. Th e MBC, particulate organic carbon (POC), and light fraction organic carbon (LOC) were signifi cantly positively correlated with total CO 2 emission. Th ough on-site CO 2 emission was signifi cantly reduced aft er the soil was severely eroded, restoration of eroded soil productivity by cattle manure amendments might release more CO 2 emission into the atmosphere. Adoption of cattle manure application to eroded Mollisols needs considering the potential negative impact of more CO 2 emission.

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Response of Soil Microbial Biomass and Enzyme Activity to Soil Fertilization in an Eroded Farmland of Chinese Mollisols

Cited by 14 publications

References 20 publications

Peer Review #1 of "Effects of afforestation with Pinus sylvestris var. mongolica plantations combined with enclosure management on soil microbial community (v0.1)"

Peer Review #1 of "Effects of afforestation with Pinus sylvestris var. mongolica plantations combined with enclosure management on soil microbial community (v0.1)"

Responses of Labile Organic Nitrogen Fractions and Enzyme Activities in eroded Mollisols After 8-year Manure Amendment

Impact of Eight‐Year Topsoil Removal and Soil Amendments on Soil Carbon Dioxide Emission in an Eroded Chinese Mollisols

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