Effects of simulated trampling and rainfall on soil nutrients and enzyme activity in an alpine meadow

Jinlong, 柴锦隆 Chai; Changlin, 徐长林 Xu; Degang, 张德罡 Zhang; Hong, 肖红 Xiao; Taotao, 潘涛涛 Pan; Xiaojun, 鱼小军 Yu

doi:10.5846/stxb201801050029

Cited by 2 publications

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“…Under the effects of light, moderate, and severe grazing, the soil bulk density from 0 to 10 cm increased by 5%, 8%, and 11%, respectively, but the effect on deep soil bulk density was limited [68]. A study on the effects of grazing and precipitation on alpine grassland in the Qinghai-Tibet Plateau found that when the 0-5 cm soil layer was not deficient, light, moderate, and severe grazing by yaks had a greater influence on the soil bulk density than did grazing with Tibetan sheep, and in the 5-10 cm soil layer, the effects of the yaks and Tibetan sheep increased, but the difference was not significant [69]. Both grassland type and grazing species had a significant impact on the structure of the 0-10 cm soil layer, and the deeper the soil layer was, the lower the impact.…”

Section: Effect Of Grazing On the Grassland Soil Structure And Enviro...mentioning

confidence: 99%

Advances in Meta-Analysis of the Effects of Grazing on Grassland Ecosystems in China

et al. 2023

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Grassland ecosystems are among the largest terrestrial ecosystems in China, and grazing, as an important grassland management method, has direct and indirect impacts on grassland ecosystems. Meta-analyses can be used to systematically evaluate and summarize multiple findings from existing studies, but there have been few comparisons of meta-analysis methods. In this review, we summarize the effects of grazing on grassland plants and soil in the existing meta-analysis studies in China from 38 meta-analysis papers. The results show that they have consistent conclusions, such as grazing reduces the aboveground biomass by approximately half, increases the soil pH, decreases the C:N:P ratio, and reduces the number of topsoil microorganisms, but the conclusions of light and moderate grazing index changes vary greatly from study to study. The belowground biomass was generally found to increase, but it slightly decreased in some cases, and the total biomass generally decreased, but it slightly increased in other cases. Vegetation coverage increased during moderate grazing; the soil moisture content was highest for light grazing, and microbial diversity increased at light to moderate levels of grazing. There are also very inconsistent conclusions due to the different datasets and quantities of samples used in meta-analysis studies, as well as variations in the types and scales of grassland areas. The ranges of changes in other indicators were large, especially for the root-shoot ratio and soil carbon. However, changes in the aboveground biomass were generally stable. We suggest subsequent meta-analyses of grazing should further clarify the classification of grassland types and compare conclusions at different scales. Additionally, standardized network analyses are recommended for field manipulation experiments to further improve the accuracy of meta-analysis and reduce the temporal and spatial limitations of existing data.

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Section: Effect Of Grazing On the Grassland Soil Structure And Enviro...mentioning

confidence: 99%

Advances in Meta-Analysis of the Effects of Grazing on Grassland Ecosystems in China

et al. 2023

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Soil Phosphorus Transport in Response to Climate Change at Mid‐High Latitudes Under Intensive Agriculture

Lou,

Zhou,

Ren

et al. 2024

Land Degrad Dev

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Phosphorus (P) is an important soil element for sustaining plant growth and the integrity of terrestrial ecosystems, and the soil P cycle is strongly influenced by climate change and agricultural activities. However, little is known about how soil P has evolved with climate change and intensive agriculture at mid‐high latitudes, where the soil P cycle is sensitive to climate change. To answer this question, an ecohydrological model (EcoHAT‐P) driven by remote sensing data was used in this study to calculate soil P concentration and loss and was calibrated and validated using 272 soil samples collected in the Sanjiang Plain, a typical mid‐high latitude region with a long history of strong agricultural activity. Soil P concentration and loss, and plant uptake of soil P, were analyzed for the years 2000–2019 and 2020–2040. The results showed that soil total P, soil P loss, and plant P uptake all increased under intensive agriculture. The soil P cycle at mid‐high latitudes was more sensitive to temperature than to precipitation. Increased temperature would increase soil P loss and plant P uptake by 93.94% and 8.16%, respectively, and soil legacy P from intensive agriculture would become the main source even if external P inputs were eliminated. The results highlight the evolution of soil P transport at mid‐high latitudes and clarify the response of soil P cycle to climate change under intensive agriculture.

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Effects of simulated trampling and rainfall on soil nutrients and enzyme activity in an alpine meadow

Cited by 2 publications

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Advances in Meta-Analysis of the Effects of Grazing on Grassland Ecosystems in China

Advances in Meta-Analysis of the Effects of Grazing on Grassland Ecosystems in China

Soil Phosphorus Transport in Response to Climate Change at Mid‐High Latitudes Under Intensive Agriculture

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