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Yanping Wang - One of the best experts on this subject based on the ideXlab platform.
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characteristics of phosphate solubilizing microbial community in the soil of poplar plantations under Successive planting and Rotation
Journal of Applied Ecology, 2016Co-Authors: Xue Song, Yanping Wang, Wen Bo Wang, Huatian WangAbstract:The metagenome sequencing was used to compare the difference of six soil samples, the rhizosphere soil of the first and the second Rotation poplar plantations (RSP1, RSP2), the bulk soil of the first and the second Rotation poplar plantations (BSP1, BSP2), the soil of rotated peanut field (RPS) and the abandoned land soil (ALS) after poplar clear cutting, in phosphate-solubili-zing microbial community and abundance of phosphatase gene (PG) in a poplar plantation. The results showed that microorganisms from nine genera were related to phosphorus cycle with Bacillus and Pseudomonas being the dominant. The abundance of PSMs was highest in ALS, followed by RPS, RSP2 and BSP2, RSP1 and BSP1, respectively. There was a significant difference of PSMs among the six soil samples. After poplar clear cutting, the abundance of Bacillus and Pseudomonas in RPS and ALS increased significantly, whereas that of Arthrobacter, Bradyrhizobium and Streptomyces decreased. However, in the rhizosphere soil of poplar plantations, an opposite pattern appeared when comparing RSP2 to RSP1. Bacillus and Pseudomonas were more abundant in rhizosphere soils than in bulk soil, while Arthrobacter, Bradyrhizobium and Streptomyces were higher. The abundance of PG presented the regularity of RSP1 and BSP1 > ALS > RSP2 and BSP2 > RPS. Rhizosphere had a more significant effect in the Successive Rotation poplar plantations than in the second Rotation plantation. An even lower phosphatase gene's abundance was shown in rhizosphere soil than in bulk soil. The number of PSMs was negatively correlated with the content of phenolic acids but positively correlated with pH value.
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seasonal dynamics of quantitative and morphological traits of poplar fine roots and their differences between Successive Rotation plantations
Journal of Applied Ecology, 2016Co-Authors: Yanping Wang, Huatian Wang, Wanrui Zhu, Qitong Wang, Mengling Liu, Yufeng DongAbstract:Based on the fine root samples of the first and second generations of poplar (Populus x euramericana ' Neva'), this study examined the response of quantitative and morphological traits of fine roots of different orders and the difference between generations. The results showed that, the quantitative traits of fine roots, such as root length, root surface area and root biomass, presented obvious seasonal variation, and the fine root traits had obvious difference among root orders. The quantitative traits of lower-order fine roots showed significant seasonal difference, and the fine root biomass increased in the growing season and then decreased significantly. The specific root length (SRL) of higher-order roots also showed significant change with season, while the root length density (RLD) and root tissue density (RTD) changed a little. The Successive Rotation resulted in the significant increase of root length, root biomass, SRL and RLD of 1-2 orders in the growing season. The quantitative traits of first order root significantly positively correlated with soil temperature and moisture, and significantly negatively correlated with the soil organic matter and soil available nitrogen content. However, the quantitative traits of second order root only showed significant correlation with soil nutrient content. The seasonal dynamics of poplar fine roots and the difference between Successive Rotation plantations implied carbon investment change of poplar to roots. Soil nutrient deficiency induced more carbon investment into roots, and this carbon allocation pattern might affect the aboveground productivity of poplar plantation.
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Seasonal dynamics of carbon and nitrogen in fine roots and their differences between Successive Rotation poplar plantations
Journal of Applied Ecology, 2015Co-Authors: Yanping Wang, Tan Xu, Guang-can Zhang, Chuan-rong Li, Huatian Wang, Yue-zhong JiangAbstract:: In this study, poplar fine roots in two Successive Rotation plantations were sampled over seasons. Root samples were grouped from first to five orders to examine the seasonal dynamics of carbon and nitrogen contents of poplar fine roots with orders, and compared their differences between two Successive Rotation plantations, and finally to find the relationships between the fine root growth and the productivity decline of Successive Rotation poplar plantations. The results showed that non-structure carbohydrates (NSC) content increased significantly with root orders, while nitrogen content decreased. The contents of total carbon and NSC were significantly related to total nitrogen content. Root orders explained 98.2% variance of carbon and nitrogen contents of poplar fine roots, and the difference between Rotations only explained 1.7% of variance. Poplar fine roots consisted of more carbon and less nitrogen with root orders, and the seasonal changes in contents of total carbon, total nitrogen and NSC showed significant difference between Rotations, while.that of the C:N ratio didn' t show significant difference. Root order and season showed interaction effect on carbon and nitrogen dynamic. The C:N ratio was about 20:1 in lower order roots, and more than 30:1 in higher order roots. The C:N ratio in summer and autumn was significantly less than those in other seasons, while NSC content was the highest in November. This study indicated that the allocation of carbon and nitrogen in fine roots was closely correlated with fine root orders. Both NSC content and C:N ratio were of greatly important ecological significance in fine root turnover and growth regulation.
Huatian Wang - One of the best experts on this subject based on the ideXlab platform.
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characteristics of phosphate solubilizing microbial community in the soil of poplar plantations under Successive planting and Rotation
Journal of Applied Ecology, 2016Co-Authors: Xue Song, Yanping Wang, Wen Bo Wang, Huatian WangAbstract:The metagenome sequencing was used to compare the difference of six soil samples, the rhizosphere soil of the first and the second Rotation poplar plantations (RSP1, RSP2), the bulk soil of the first and the second Rotation poplar plantations (BSP1, BSP2), the soil of rotated peanut field (RPS) and the abandoned land soil (ALS) after poplar clear cutting, in phosphate-solubili-zing microbial community and abundance of phosphatase gene (PG) in a poplar plantation. The results showed that microorganisms from nine genera were related to phosphorus cycle with Bacillus and Pseudomonas being the dominant. The abundance of PSMs was highest in ALS, followed by RPS, RSP2 and BSP2, RSP1 and BSP1, respectively. There was a significant difference of PSMs among the six soil samples. After poplar clear cutting, the abundance of Bacillus and Pseudomonas in RPS and ALS increased significantly, whereas that of Arthrobacter, Bradyrhizobium and Streptomyces decreased. However, in the rhizosphere soil of poplar plantations, an opposite pattern appeared when comparing RSP2 to RSP1. Bacillus and Pseudomonas were more abundant in rhizosphere soils than in bulk soil, while Arthrobacter, Bradyrhizobium and Streptomyces were higher. The abundance of PG presented the regularity of RSP1 and BSP1 > ALS > RSP2 and BSP2 > RPS. Rhizosphere had a more significant effect in the Successive Rotation poplar plantations than in the second Rotation plantation. An even lower phosphatase gene's abundance was shown in rhizosphere soil than in bulk soil. The number of PSMs was negatively correlated with the content of phenolic acids but positively correlated with pH value.
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seasonal dynamics of quantitative and morphological traits of poplar fine roots and their differences between Successive Rotation plantations
Journal of Applied Ecology, 2016Co-Authors: Yanping Wang, Huatian Wang, Wanrui Zhu, Qitong Wang, Mengling Liu, Yufeng DongAbstract:Based on the fine root samples of the first and second generations of poplar (Populus x euramericana ' Neva'), this study examined the response of quantitative and morphological traits of fine roots of different orders and the difference between generations. The results showed that, the quantitative traits of fine roots, such as root length, root surface area and root biomass, presented obvious seasonal variation, and the fine root traits had obvious difference among root orders. The quantitative traits of lower-order fine roots showed significant seasonal difference, and the fine root biomass increased in the growing season and then decreased significantly. The specific root length (SRL) of higher-order roots also showed significant change with season, while the root length density (RLD) and root tissue density (RTD) changed a little. The Successive Rotation resulted in the significant increase of root length, root biomass, SRL and RLD of 1-2 orders in the growing season. The quantitative traits of first order root significantly positively correlated with soil temperature and moisture, and significantly negatively correlated with the soil organic matter and soil available nitrogen content. However, the quantitative traits of second order root only showed significant correlation with soil nutrient content. The seasonal dynamics of poplar fine roots and the difference between Successive Rotation plantations implied carbon investment change of poplar to roots. Soil nutrient deficiency induced more carbon investment into roots, and this carbon allocation pattern might affect the aboveground productivity of poplar plantation.
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Seasonal dynamics of carbon and nitrogen in fine roots and their differences between Successive Rotation poplar plantations
Journal of Applied Ecology, 2015Co-Authors: Yanping Wang, Tan Xu, Guang-can Zhang, Chuan-rong Li, Huatian Wang, Yue-zhong JiangAbstract:: In this study, poplar fine roots in two Successive Rotation plantations were sampled over seasons. Root samples were grouped from first to five orders to examine the seasonal dynamics of carbon and nitrogen contents of poplar fine roots with orders, and compared their differences between two Successive Rotation plantations, and finally to find the relationships between the fine root growth and the productivity decline of Successive Rotation poplar plantations. The results showed that non-structure carbohydrates (NSC) content increased significantly with root orders, while nitrogen content decreased. The contents of total carbon and NSC were significantly related to total nitrogen content. Root orders explained 98.2% variance of carbon and nitrogen contents of poplar fine roots, and the difference between Rotations only explained 1.7% of variance. Poplar fine roots consisted of more carbon and less nitrogen with root orders, and the seasonal changes in contents of total carbon, total nitrogen and NSC showed significant difference between Rotations, while.that of the C:N ratio didn' t show significant difference. Root order and season showed interaction effect on carbon and nitrogen dynamic. The C:N ratio was about 20:1 in lower order roots, and more than 30:1 in higher order roots. The C:N ratio in summer and autumn was significantly less than those in other seasons, while NSC content was the highest in November. This study indicated that the allocation of carbon and nitrogen in fine roots was closely correlated with fine root orders. Both NSC content and C:N ratio were of greatly important ecological significance in fine root turnover and growth regulation.
Wang Fuhao - One of the best experts on this subject based on the ideXlab platform.
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characteristics of soil nitrogen mineralization in different aged stands and the Successive Rotation stands of poplar plantation
Journal of Henan Agricultural University, 2010Co-Authors: Wang FuhaoAbstract:By the aerobic incubation-intermittent leaching method(20and 30 ℃),the characteristics of soil nitrogen mineralization in different aged poplar plantation stands(the first Rotation of four-year-old and ten-year-old),the different Successive Rotation poplar plantation stands(the first Rotation of four-year-old and the second Rotation of four-year-old) and the agricultural land were studied in Chenwei Forest Farm,Sihong County,Jiangsu.The results showed that the cumulative mineralized N of soils from the four studied sites ranged from 36.70 to 95.63 mg·kg-1 during 4 weeks incubation and the average mineralization rate of soils approximately ranged from 1.31 to 3.42 mg·kg-1·d-1.The stand ages and Successive Rotations had great effects on soil N mineralization(mainly on nitrification).Compared with the first Rotation stands of 4-year-old poplar plantation,the cumulative mineralized N and nitrified N decreased by 11%~17% and by 13%~20%,respectively in the first Rotation stands of 10-year-old poplar plantation,while in the second Rotation stands of 4-year-old poplar plantation it decreased by 39%~43% and by 45%~49% respectively.Soil mineralization rate and nitrification rate were the greatest in the first week and then sharply decreased in the following incubation weeks for all sites while the peak value of ammonification rate occurred in the second incubation week.Soil mineralization rate and nitrification rate decreased with the increase of stand ages and Successive Rotations,but the stand ages and Successive Rotations had no obvious effect on ammonification rate.For all studied sites,the cumulative mineralized N and mineralization rate were significantly greater at the incubation temperature of 30 ℃ than at the temperature of 20 ℃,indicating that incubation temperature had a great influence on soil mineralization.
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in situ study on soil nitrogen mineralization in Successive Rotation stands of poplar plantation in north jiangsu province
Journal of Nanjing Forestry University, 2009Co-Authors: Wang Lianggui, Zhang Huanchao, Zhu Qianggen, Jiang Yongfeng, Yan Kaiyi, Wang FuhaoAbstract:By the method of in situ soil core-ion exchange resin bag(ISC-IERB),the characteristics of soil nitrogen mineralization in the different Successive Rotation stands of poplar plantation(the first Rotation of four-year-old and the second Rotation of four-year-old) and the effects of tillage on the soil nitrogen mineralization in the second Rotation of four-year-old poplar plantation were studied in north Jiangsu province.The results showed that the seasonal changes of soil ammonification rate in two Rotation stands were similar.The soil ammonification rate in the second Rotation stand was not obviously decreased and even increased in April and July,compared with the first Rotation stand.However,the soil nitrification rate and net mineralization rate in the second Rotation stand were significantly lower than that in the first Rotation stand,especially in March,April and May.Compared with the no-tillage,the annual ammonified,nitrified and mineralized nitrogen of soil in the second Rotation stand treated with the tillage were increased.Meanwhile,the tillage treatment was obviously increased the soil N lose by leaching which accounted for 49.15% of the total annual mineralized N,therefore soil inorganic N content was lower in the stand treated with tillage than that in the stand with no-tillage.
Yue-zhong Jiang - One of the best experts on this subject based on the ideXlab platform.
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Seasonal dynamics of carbon and nitrogen in fine roots and their differences between Successive Rotation poplar plantations
Journal of Applied Ecology, 2015Co-Authors: Yanping Wang, Tan Xu, Guang-can Zhang, Chuan-rong Li, Huatian Wang, Yue-zhong JiangAbstract:: In this study, poplar fine roots in two Successive Rotation plantations were sampled over seasons. Root samples were grouped from first to five orders to examine the seasonal dynamics of carbon and nitrogen contents of poplar fine roots with orders, and compared their differences between two Successive Rotation plantations, and finally to find the relationships between the fine root growth and the productivity decline of Successive Rotation poplar plantations. The results showed that non-structure carbohydrates (NSC) content increased significantly with root orders, while nitrogen content decreased. The contents of total carbon and NSC were significantly related to total nitrogen content. Root orders explained 98.2% variance of carbon and nitrogen contents of poplar fine roots, and the difference between Rotations only explained 1.7% of variance. Poplar fine roots consisted of more carbon and less nitrogen with root orders, and the seasonal changes in contents of total carbon, total nitrogen and NSC showed significant difference between Rotations, while.that of the C:N ratio didn' t show significant difference. Root order and season showed interaction effect on carbon and nitrogen dynamic. The C:N ratio was about 20:1 in lower order roots, and more than 30:1 in higher order roots. The C:N ratio in summer and autumn was significantly less than those in other seasons, while NSC content was the highest in November. This study indicated that the allocation of carbon and nitrogen in fine roots was closely correlated with fine root orders. Both NSC content and C:N ratio were of greatly important ecological significance in fine root turnover and growth regulation.
Yufeng Dong - One of the best experts on this subject based on the ideXlab platform.
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seasonal dynamics of quantitative and morphological traits of poplar fine roots and their differences between Successive Rotation plantations
Journal of Applied Ecology, 2016Co-Authors: Yanping Wang, Huatian Wang, Wanrui Zhu, Qitong Wang, Mengling Liu, Yufeng DongAbstract:Based on the fine root samples of the first and second generations of poplar (Populus x euramericana ' Neva'), this study examined the response of quantitative and morphological traits of fine roots of different orders and the difference between generations. The results showed that, the quantitative traits of fine roots, such as root length, root surface area and root biomass, presented obvious seasonal variation, and the fine root traits had obvious difference among root orders. The quantitative traits of lower-order fine roots showed significant seasonal difference, and the fine root biomass increased in the growing season and then decreased significantly. The specific root length (SRL) of higher-order roots also showed significant change with season, while the root length density (RLD) and root tissue density (RTD) changed a little. The Successive Rotation resulted in the significant increase of root length, root biomass, SRL and RLD of 1-2 orders in the growing season. The quantitative traits of first order root significantly positively correlated with soil temperature and moisture, and significantly negatively correlated with the soil organic matter and soil available nitrogen content. However, the quantitative traits of second order root only showed significant correlation with soil nutrient content. The seasonal dynamics of poplar fine roots and the difference between Successive Rotation plantations implied carbon investment change of poplar to roots. Soil nutrient deficiency induced more carbon investment into roots, and this carbon allocation pattern might affect the aboveground productivity of poplar plantation.
