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Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Clinical Hepatology / Linchuang Gandanbing Zazhi is the property of Journal of Clinical Hepatology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ecological Science is the property of Ecological Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Guangxi Normal University - Natural Science Edition is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Financial & Economic Law Review is the property of Angle Publishing Co., Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Laboratory Medicine is the property of Journal of Modern Laboratory Medicine Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mycosystema is the property of Mycosystema Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of New Building Materials / Xinxing Jianzhu Cailiao is the property of New Building Materials Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Remote Sensing is the property of Editorial Office of Journal of Remote Sensing & Science Publishing Co. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Remote Sensing is the property of Editorial Office of Journal of Remote Sensing & Science Publishing Co. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] To explore how phosphorus input regulates the effects of atmospheric nitrogen deposition on soil aggregate organic carbon content and the relationship between carbon and phosphorus. [Methods] A long-term monitoring test platform for nutrient addition was established in evergreen broad-leaved forest soil for 6 years (2015-2021), including 4 treatments: Control [P0 + N0, P 0 kg/(hm² * a) + N 0 kg/(hm² * a)], nitrogen addition [P0 + N100, P 0 kg/(hm² * a)+N 100 kg/(hm ² * a)], phosphorus nput [P50 + N0, P 50 kg/(hm² * a) + N 0 kg/(hm ² * a)] and nitrogen and phosphorus were simultaneously nput (P50 + N100, P 50 kg/(hmhm² * a) + N 100 kg/(hm² * a)], and each treatment was repeated 3 times, and a total of 12 plots were obtained. 0-10 cm soil samples were collected from the sample site in August 2021 to determine the basic physical and chemical properties, soil particle size distribution, phosphorus components of soil aggregates of different particle sizes, and organic carbon (SOC) content. [Results] (1) Under P0 treatment, nitrogen addition significantly increased the proportion of large aggregates, decreased the clay and powder contents, and increased the SOC content in each aggregate particle size. Nitrogen addition significantly decreased and increased the content of labile phosphorus (LP) and residual phosphorus (RP) in aggregate clay and powder, respectively. (2) Under P50 treatment, nitrogen addition significantly increased the geometric mean diameter (GMD) of soil aggregates, but had no significant effects on phosphorus components and SOC contents in aggregates of different particle sizes. (3) Under P0 treatment, soil aggregate SOC was positively correlated with refractory phosphorus. There was no significant correlation between SOC of soil aggregates and functional phosphorus components under P50 treatment. It was concluded that under P0 treatment, nitrogen addition could increase soil organic carbon retention by increasing the refractory phosphorus in soil aggregate clay and powder particle size of evergreen broad-leaved forest. Under P50 treatment, the effect of nitrogen addition on organic carbon in each particle size may be regulated by biological factors and has nothing to do with the availability of phosphorus. [Conclusion] The effect of nitrogen deposition on the internal relationship of carbon and phosphorus in soil aggregates in evergreen broad-leaved forests was regulated by phosphorus. The results of this study provide data supported or forest soil carbon cycling in response to global climate change. [ABSTRACT FROM AUTHOR]

[Objective] The objective of this study was to investigate the growth of herbaceous plants on the ground surface of the subtropical evergreen broad-leaved forest ecosystem in Yunnan Province in the context of atmospheric nitrogen deposition with varying concentrations, and to explore the impacts of atmospheric nitrogen deposition on the plant composition and structural function of the forest ecosystem. [Method] In this study, the subtropical evergreen broad-leaved forest ecosystem in Yunnan Province was taken as the research object; six nitrogen gradients of 0, 1, 5, 10, 15 and 30 g/(m²·a) were set up; the artificial spraying method under the forest canopy once a month was employed to continuously apply nitrogen to the field experimental plots for two years; and we observed the plant growth characteristics of the herbaceous layer on the ground surface in the field experimental plots after two years, such as plant diversity, richness, height and biomass. [Result] The results showed that the experimental data including plant richness, height and biomass gradually increased with the increase of the applied nitrogen concentrations; in the field experimental plot with 30 g/(m²·a), the data mentioned above respectively reached the maximum value; while, the data of plant diversity reached the maximum in the field experimental plot with 5 g/(m²·a), which was (13±3) species/m2.The plant biomass of aboveground organs accounted for a large proportion of the total plant biomass, ranging from (0.69±0.06) to (0.77±0.09), and it gradually decreased with the increase of the applied nitrogen concentrations; and the proportion of the plant biomass of underground organs to the total plant biomass was relatively small, ranging from (0.23±0.03) to (0.32±0.04), and it gradually increased with the increase of applied nitrogen concentration. [Conclusion] This study adequately demonstrated that a large amount of atmospheric nitrogen deposition had a negative impact on the plant diversity in forest ecosystems, and clarified the impacts of atmospheric nitrogen deposition with varying concentrations on the allocation pattern of aboveground and underground plant production of the herbaceous plants, and provided a theoretical basis and practical reference for scientific management and rational development and utilization of forest ecosystems disturbed by atmospheric nitrogen deposition. [ABSTRACT FROM AUTHOR]

In this study, we sought to determine the effects of different vegetation types on soil microorganisms in karst areas of China, and to examine the impacts of vegetation restoration on soil ecosystem function in these areas. For the purposes of the study, we used soil collected from typical vegetation types (coniferous forest, broad-leaved forest, and natural grassland) in mountainous karst areas of northern Guangdong, among which, we analyzed differences in soil physicochemical properties, bacterial community diversity, and functional composition. Results showed that in terms of bacterial community diversity, there were no significant differences among the different vegetation types' soil with the exception being those of coniferous forests, which were characterized by lower levels of evenness and phylogenetic diversity. The community composition of soil bacteria was differed significantly among the different vegetation types, and soil physicochemical parameters (pH value and the contents of water, ammonia salts, nitrate, total nitrogen, total phosphorus, and organic matter) had a significant influence on the composition of the soil bacterial community. The pH value of grassland soil was close to neutral, and was significantly higher than that of the soils of coniferous forest and broad-leaved forest land. Similarly, grassland soil was characterized by higher contents of nitrogen, phosphorus, and organic matter. Results obtained based on functional annotation of prokaryotic taxa functional prediction revealed that chemoheterotrophic expression was highest in soils of different vegetation types. Nitrogen fixation was higher in nitrogen cycle-related functions, and there were significant differences in different types of soils, with total nitrogen, total phosphorus, pH value, and soil moisture being identified as the main environmental factors contributing to these differences. In conclusion, differences in vegetation restoration and ecological succession among forests and grasslands in karst areas may influence soil bacterial community structure and potential functions, and thus have differing effects on soil ecosystem functions. [ABSTRACT FROM AUTHOR]

In order to gain insight into the species diversity and functional diversity of forest vegetation in karst hills and their relationships with environmental factors. We analyzed the species diversity and functional diversity of deciduous broad-leaved forest, mixed evergreen and deciduous broad-leaved forest, and evergreen broad-leaved forest in karst hills of Guilin through community investigation, determination of functional traits and environmental factors. And in combination with statistical methods such as one-way analysis of variance, multiple comparisons, and redundancy analysis to investigate the impact mechanisms of environmental factors on the species diversity and functional diversity of different vegetation types. The results were as follows:(1)The Patrick richness index was significantly higher in evergreen broad-leaved forest than that in deciduous broad-leaved forest, and mixed evergreen and deciduous broad-leaved forest. The Pielou evenness index of mixed evergreen and deciduous broad-leaved forest was the highest, followed by deciduous broad-leaved forest and the lowest in evergreen broad-leaved forest.(2)The functional richness index of evergreen broad-leaved forest was significantly higher than that of mixed evergreen and deciduous broad-leaved forest and deciduous broad-leaved forest; the functional evenness index was the highest in mixed evergreen and deciduous broad-leaved forest, the second in deciduous broad-leaved forest, and the lowest in evergreen broad-leaved forest.(3)Redundancy analysis combined with Monte Carlo random replacement test results indicated that species diversity of deciduous broad-leaved forest was mainly affected by canopy openness and soil water-soluble calcium. Functional diversity was affected by soil water-soluble calcium and rock exposure rate. Rock exposure rate and soil thickness were the main restricting factors that affect species diversity and functional diversity of mixed evergreen and deciduous broad-leaved forest. In addition, species diversity was significantly affected by soil available nitrogen. The influencing factors of species diversity and functional diversity of evergreen broad-leaved forest were consistent, and they were all significantly affected by rock exposure rate, soil water content and soil thickness. The results of this study reveal the effects of species diversity and functional diversity of different forest vegetations on non-biological environmental changes, expand the understanding of species diversity and functional diversity of karst hills, and provide further reference for biodiversity protection of karst hills. [ABSTRACT FROM AUTHOR]

Copyright of Forest Engineering is the property of Forest Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Advances in Water Science / Shuikexue Jinzhan is the property of Editorial Board of Advances in Water Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Wildlife / Yesheng Dongwu Xuebao is the property of Chinese Journal of Wildlife Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Mountain Research (10082786) is the property of Mountain Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Soil samples were collected from the forests[Pinus massoniana forest(PF), mixed coniferous and broadleaf forest(MF), broad-leaved evergreen forest(BF)] in the urban area, suburban area, and rural area of Guangzhou City to explore the changes of soil enzyme activities and their relationship with physicochemical properties and heavy metals. Those results showed that:the acid phosphatase(AP) and urease(URE) activities in PF and the catalase(CAT), URE and dehydrogenase(DH) activities in MF showed the same trend of suburban>rural>urban. The AP, URE and DH activities in BF showed a trend of suburban>urban>rural. From urban to suburban, the soil pH value and the content of sand in MF were significantly higher than PF and BF(P<0.05), and the contents of soil organic matter(SOM), total nitrogen(TN), total phosphorus(TP) showed a trend of PFP<0.05), TP were significantly and positively correlated with AP and URE(P<0.05), soil moisture were significantly and positively correlated with DH(P<0.05). Nevertheless, the contents of Cu were significantly and negatively correlated with URE(P<0.05). [ABSTRACT FROM AUTHOR]

Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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