Soil labile organic carbon and carbon-cycle enzyme activities under different thinning intensities in Chinese fir plantations

Chen, Han Y. H.; Chen, Xin; Wang, Jing; Chen, Bin; Wang, Dong; Guan, Qingwei

doi:10.1016/j.apsoil.2016.05.016

Cited by 108 publications

(51 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increasing of the efficiency of litter decomposition due to thinning promoted the activities of enzyme relating to carbon decomposition [48]. Our finding was inconsistent with previous results that thinning decreased the activities of BG and cellulose, possibly due to reduced turnover of extraradical hyphae of mycorrhizae [43]. An investigation indicated that thinning decreased the activities of phenol oxidase and cellulose, but increased peroxidase activity.…”

Section: Soil Microbial Community Structure and Soil Enzyme In Thinnicontrasting

confidence: 98%

“…Gap formation resulting from thinning increased light transmittance to understory plants, and improved forest microclimate and created more favorable conditions for microbial decomposers [41,42]. Our results were consistent with those from a study in Chinese fir plantations, which showed increases in soil microbial biomass after seven years of thinning with high thinning treatment [43]. Similar results were also observed in Pinus densiflora Sieb.…”

Section: Soil Microbial Community Structure and Soil Enzyme In Thinnisupporting

confidence: 91%

“…forests, where the abundance of soil microbes increased significantly after seven years of thinning [44]. This is because thinning had increased carbon inputs from litter, root exudates, and dead fine root [43,44]. However, decreased soil microbial abundance in forest thinning had also been reported [11].…”

Section: Soil Microbial Community Structure and Soil Enzyme In Thinnimentioning

confidence: 99%

“…The increasing of microbial biomass carbon was related to the variation of soil water and soil pH. Previous studies theorized that the increasing of soil organic carbon and microbial biomass carbon in moderate thinning treatment may be caused by the changes of the quantity and quality of soil substrates [43]. In this paper, soil pH, soil water content, microbial community diversity and functional properties were used to assess the contribution on soil carbon.…”

Section: Effects Of Soil Ph Soil Water Content and Microbial Factormentioning

confidence: 99%

See 3 more Smart Citations

The Effect of Forest Thinning on Soil Microbial Community Structure and Function

Cheng

Han

2019

Forests

View full text Add to dashboard Cite

Microbial communities and their associated enzyme activities play key roles in carbon cycling in ecosystems. Forest thinning is likely to change the soil properties and feedbacks on the structure and function of microbial communities, consequently affecting microbial regulation on the soil carbon process. However, few studies have focused on the mechanism of how thinning affects the quantity and stability of soil carbon. To reveal the influence of thinning on soil carbon and to explore the regulated key factors, this study was conducted in a pure Larix principis-rupprechtii Mayr plantation with different thinning intensity (light, medium, and high) in Shanxi province, China. Soil properties (soil pH, soil water content, soil organic carbon, and soil microbial biomass carbon) were measured. Meanwhile, soil microbial communities were examined with the method of phospholipid fatty acid (PLFA), and soil enzyme activities were measured as indicators of soil microbial functions. The results showed that medium and high thinning has positive effects on soil organic carbon, microbial biomass carbon, soil microbial abundance, and soil enzyme activities. Actinomycetes and gram-negative bacteria were the major factors to affect soil microbial community function relating to carbon decomposition. Soil pH contributed to actinomycetes and gram-negative bacteria through direct influences on arbuscular mycorrhizal fungi. Moreover, there were strong correlations between soil pH and microbial community to control soil carbon turnover. The increasing of soil microbial abundance and the microbial regulation on soil carbon in forest thinning need to be considered for sustainable forest management practices in northern China.

show abstract

Section: Soil Microbial Community Structure and Soil Enzyme In Thinnicontrasting

confidence: 98%

Section: Soil Microbial Community Structure and Soil Enzyme In Thinnisupporting

confidence: 91%

Section: Soil Microbial Community Structure and Soil Enzyme In Thinnimentioning

confidence: 99%

Section: Effects Of Soil Ph Soil Water Content and Microbial Factormentioning

confidence: 99%

See 2 more Smart Citations

The Effect of Forest Thinning on Soil Microbial Community Structure and Function

Cheng

Han

2019

Forests

View full text Add to dashboard Cite

show abstract

“…Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) is cultivated in the south of China because of its fast growth and high yield [1,2]. It usually matures between 25 to 30 years and is harvested from 20 to 25 years to meet the growing need for timber [3,4].…”

Section: Introductionmentioning

confidence: 99%

Prolonging Rotation of Chinese Fir to over 25 Years Could Maintain a Better Soil Status in Subtropical China

Miao

Kang

et al. 2019

Forests

View full text Add to dashboard Cite

Although Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) is an important species for wood production in subtropical China, it serious declines in soil nutrients and timber productivity in plantations have been reported, probably caused by successive rotation and inappropriate cutting time. Although the significant effect of stand age on soil properties has been widely recognized, research on soil enzymes and microbial communities is relatively rare. In this study, assuming that short rotation period is one important reason for soil degradation, we measured soil physicochemical properties, microbial community composition, and enzyme activity in 3-, 15-, 25- and 45-year Chinese fir forests in Jiangxi province of China. Soil organic carbon (SOC) content decreased from 3-year to 25-year stands and then increased in 45-year stands. Despite the significant relationship between SOC and the abundance of total phospholipid fatty acids (PLFAs), no notable changes in the abundance of PLFAs were detected with increasing tree ages, except for the abundances of arbuscular mycorrhizal fungi (AMF) which were significantly higher in 25-year stands. However, the ratios of gram-positive to gram-negative bacteria (G+/G−) and fungi to bacteria (F/B) both decreased with increasing stand age. 45-year stands showed the highest activities of both phosphatase and β-glucosidase. Total potassium (TK) content and net N mineralization rate both had significant links with soil microbial community structure. Collectively, our study emphasized that stand age could significantly affect soil physicochemical properties and the microbial community. In general, 25-year stands showed poorer soil status compared to that of 45-year stands. Thus, the cutting age of Chinese fir should be increased to over 25 years to maintain a better soil status.

show abstract

Effects of humic acid–enhanced phosphate fertilizer on wheat yield, phosphorus uptake, and soil available phosphorus content

et al. 2023

View full text Add to dashboard Cite

Humic acid (HA) can improve the use efficiency of phosphate fertilizer, although its optimal proportion in fertilizers remains unknown. In this study, we conducted soil column experiments over two growing seasons to compare the effects of different HA proportions in phosphate fertilizer on wheat yield and phosphorus uptake, utilization, and soil available phosphorus. At harvest, grain yields were 0.23%-13.21% higher under HA-enhanced phosphate (HAP) compared to treatments with conventional phosphate fertilizer (P). Among different HAPs, wheat treated with HAP with 1.0% HA (HAP10) or 2.0% HA (HAP20) had the highest 2-year grain yield. Furthermore, total phosphorus uptake and its allocation in grains were both higher under HAP treatments compared to P treatment. The apparent use efficiency, agronomic efficiency and partial productivity of phosphorus in HAP10 and HAP20 treatments were also significantly higher than those treated with P in both growing seasons. In addition, HAP10 and HAP20 treatments resulted in the highest content of available phosphorus in the 0-60 cm soil layer compared with other HAPs or P alone. Incorporating HA into phosphate fertilizer at proportions of 0.5%-5.0% can increase wheat yield, phosphorus uptake, phosphate fertilizer use efficiency, and soil available phosphorus content, 1.0% or 2.0% HA in HAP shows the highest effects on these indexes. Given the economic benefits, 1.0% level is an optimal level for enhancing the effects of phosphate fertilizer in winter wheat crops.

show abstract

Soil labile organic carbon and carbon-cycle enzyme activities under different thinning intensities in Chinese fir plantations

Cited by 108 publications

References 65 publications

The Effect of Forest Thinning on Soil Microbial Community Structure and Function

The Effect of Forest Thinning on Soil Microbial Community Structure and Function

Prolonging Rotation of Chinese Fir to over 25 Years Could Maintain a Better Soil Status in Subtropical China

Effects of humic acid–enhanced phosphate fertilizer on wheat yield, phosphorus uptake, and soil available phosphorus content

Contact Info

Product

Resources

About