Effect of tea plantation age on the distribution of soil organic carbon and nutrient within micro-aggregates in the hilly region of western Sichuan, China

Wang, Shengqiang; Li, Tingxuan; Zheng, Zicheng

doi:10.1016/j.ecoleng.2016.01.046

Cited by 72 publications

(31 citation statements)

References 29 publications

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“…This is in line with previous studies reporting the plantation age as a critical factor affecting SOC and N dynamics during land use change, in particular on tea plantations (Pansombat et al, 1997;Wang et al, 2016). This demonstrates that long-term tea plantations result in a significant accumulation of organic C and N. The increase in the amount of soil micro-aggregates in long-term tea plantations can be a reason for such an increase in TOC and MBN, as micro-aggregates are the most predominant pools of SOC and other nutrients (Wang et al, 2016). In addition, the application of long-term organic and mineral fertilizers into tea plantations could also result in the accumulation of organic C and N in the soil.…”

Section: Effect Of Soil Properties On Shaping Soil Bacterial Communitiessupporting

confidence: 93%

Variations in soil nutrient dynamics and bacterial communities in long-term tea monoculture production systems

Gui

Lichao

Wang

et al. 2021

Preprint

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Long-term monoculture agriculture systems could lead to soil degradation and yield decline. The ways in which soil microbiotas interact with one another, particularly in response to long-term tea monoculture systems are currently unclear. In this study, through the comparison of three independent tea plantations across eastern China composed of varying stand ages (from 3 years to 90 years after conversion from forest), we found that long-term tea monoculture led to significant increases in soil total organic carbon (TOC) and microbial nitrogen (MBN). Additionally, the structure, function and co-occurrence network of soil microbial communities were investigated by pyrosequencing 16S rRNA genes. The pyrosequencing analysis revealed that structures and functions of soil bacterial communities were significantly affected by different stand ages of tea plantations, but sampling sites and land-use conversion (from forest to tea plantation) still outcompeted stand age to control the diversity and structure of soil bacterial communities. Further RDA analysis revealed that the C and N availability improvement in tea plantation soils led to variation of structure and function in soil microbial communities. Moreover, co-occurrence network analysis of soil bacterial communities also demonstrated that interactions among soil bacteria taxa were strengthened with the increasing stand age of respective tea stands. Overall, this study provides a comprehensive understanding of the impact of long-term monoculture stand age on soil nutrient dynamics and bacterial communities in tea production.

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Section: Effect Of Soil Properties On Shaping Soil Bacterial Communitiessupporting

confidence: 93%

Variations in soil nutrient dynamics and bacterial communities in long-term tea monoculture production systems

Gui

Lichao

Wang

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…In addition, some studies showed that different SOC fractions had remarkably different Q 10 values [ 52 ]. Tea plantations with different conversion years had different SOC mineralization temperature sensitivity, and this might be due to the changes of SOC composition [ 19 ].…”

Section: Discussionmentioning

confidence: 99%

“…Tea plantations are artificially managed and gradually form a unique regional ecosystem [ 13 ]. Our previous studies showed that soil properties change with the increasing age of tea plantation, including the content of SOC and nutrient elements; these changed soil properties modify the soil structure and function [ 17 – 19 ]. However, the effect of long-term tea plantations on SOC mineralization in the hilly region of Western Sichuan, China, is unclear.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of soil organic carbon mineralization in tea plantations converted from farmland at Western Sichuan, China

Zhu

Zheng

et al. 2017

PLoS ONE

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Climate warming and land use change are some of the drivers affecting soil organic carbon (SOC) dynamics. The Grain for Green Project, local natural resources, and geographical conditions have resulted in farmland conversion into tea plantations in the hilly region of Western Sichuan. However, the effect of such land conversion on SOC mineralization remains unknown. In order to understand the temperature sensitivity of SOC decomposition in tea plantations converted from farmland, this study considered the different years (i.e., 2–3, 9–10, and 16–17 years) of tea plantations converted from farmland as the study site, and soil was incubated for 28 days at 15°C, 25°C, and 35°C to measure the soil respiration rate, amount, and temperature coefficient (Q10). Temperature and land use type interactively affected the SOC mineralization rate, and the cumulative amount of SOC mineralization in all the plots was the largest at 35°C. SOC mineralization was greater and more sensitive to temperature changes in the farmland than in the tea plantations. Compared with the control, tea plantation soils showed lower SOC mineralization rate and cumulative mineralization amount. The 16–17-year-old tea plantation with a low SOC mineralization amount and high SOC content revealed the benefits of carbon sequestration enhancement obtained by converting farmland into tea plantations. The first-order kinetic equation described SOC mineralization dynamics well. Farmland conversion into tea plantations appeared to reduce the potentially mineralizable carbon pool, and the age of tea plantations also had an effect on the SOC mineralization and sequestration. The relatively weak SOC mineralization temperature sensitivity of the tea plantation soils suggested that the SOC pool of the tea plantation soils was less vulnerable to warming than that of the control soils.

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“…are generally low and total (NPK) concentration were higher [8]. Likewise, most of the inorganic fertilizers were fixed to free iron and aluminum oxide in the soil by weathering and leaching, which cause nutrient sequestration in long-term tea plantations [9,10]. Soil enzymes are responsible for the decomposition of animal, plant and microbial residues, and the biological function of soil fertility formation.…”

Section: Introductionmentioning

confidence: 99%

Restoration of Long-Term Monoculture Degraded Tea Orchard by Green and Goat Manures Applications System

et al. 2019

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Tea is an economic shrubby plant in tropical and subtropical regions of the world. To obtain high yield in tea cultivation, chemical fertilizer application rates have generally been used. However, a large quantity of chemical fertilizer application in a long-term continuously ratooned and monoculture tea orchard can inevitably lead to soil acidification and a decline in fertility. Therefore, the restoration of soil fertility and the sustainable development of tea planting by organic ways are critical for the tea industry. In this study, field trials were conducted in the tea orchard that was continuously ratooned and mono-cultured for 20 years. Nitrogen fertilizer (NF), Laredo soybeans green manure (LF), and goat manure (GM) treatments were applied to restore optimum acidity, soil fertility, microbial activity, and the community structure of a long-term continuously monoculture tea orchard. This paper investigated that the pH value was increased from 4.23 to 4.32 in GM and LF, respectively. Similarly, the content of exchangeable acidity (EA) was decreased by 1.21 and 1.46 cmol·kg−1 in GM and LF, respectively. Available nutrient results indicated that the content of NH4+-N was increased by 3.96, 4.38, NO3−-N by 1.07, 2.16, AP by 3.46, 6.86, AK by 0.26, 0.3 mg kg−1 in GM and LF treatments, respectively. Enzyme analysis revealed that the activity of urease and sucrase was promoted by 7.98 mg·g−1·24 h−1 and 6.77 mg·g−1·24 h−1, respectively, in LF treatment. Likewise, the activity of acid phosphatase and polyphenol oxidase was sharply increased by 2.3 mg·g−1 h−1 and 63.07 mg·g−1 h−1 in LF treatments. Additionally, the activity of urease, sucrase, acidic phosphatase, polyphenol oxidase, and peroxidase were also significantly increased by applying GM treatments. Meanwhile, LF and GM treatments significantly improved soil microbial biomass as well as low weight organic acid content in degraded tea rhizosphere. Furthermore, high throughput sequence results illustrated that the relative abundance of Rhizobiaceae and Bradyrhizobiaceae families increased in LF and GM treatments, respectively, which are mostly a kind of nitrogen fixer and plant growth promoting bacteria. Taken together, the physiological traits of the new sprouts and the biochemical components of new tea leaves were also significantly improved by GM and LF treatments. From this study, it is concluded that LF and GM are good agriculture management practices, which promote plant growth, yield, and nutrient availability by maintaining and improving pH, enhancing available nutrients status, improving the secretion of low molecular weight organic acids, and balancing the microbial community structure in the long-term mono-cultured tea orchard.

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Effect of tea plantation age on the distribution of soil organic carbon and nutrient within micro-aggregates in the hilly region of western Sichuan, China

Cited by 72 publications

References 29 publications

Variations in soil nutrient dynamics and bacterial communities in long-term tea monoculture production systems

Variations in soil nutrient dynamics and bacterial communities in long-term tea monoculture production systems

Dynamics of soil organic carbon mineralization in tea plantations converted from farmland at Western Sichuan, China

Restoration of Long-Term Monoculture Degraded Tea Orchard by Green and Goat Manures Applications System

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