scholarly journals “Positive and negative plant-soil feedbacks are caused by mycorrhizal type, soil fertility, and phylogenetic relatedness in a mixed Dipterocarp rain forest”

2018 ◽  
Author(s):  
R. Max Segnitz ◽  
Sabrina E. Russo ◽  
Stuart J. Davies ◽  
Kabir G. Peay
Keyword(s):  
Soil Fertility ◽  
Tree Species ◽  
Arbuscular Mycorrhizal ◽  
Phylogenetic Distance ◽  
Plant Population Dynamics ◽  
Plant Soil ◽  
Tropical Diversity ◽  
Subsequent Revision ◽  
High Diversity

AbstractWhile work in temperate forests suggests that there may be consistent differences in plant-soil feedback (PSF) between plants with arbuscular and ectomycorrhizal associations, it is unclear whether this is compatible with the high diversity of tropical rainforests. To examine this, we tested the effect of mycorrhizal type, phylogenetic distance, and soil fertility on variation in PSF strength in a mixed-tropical rainforest with a uniquely high diversity of ectomycorrhizal and arbuscular mycorrhizal trees. We found positive phylogenetic PSFs for ectomycorrhizal tree species that were insensitive to soil fertility. By contrast, PSFs for arbuscular mycorrhizal tree species were negative, and increasingly so with greater soil fertility. Our results demonstrate consistent effects of mycorrhizal types on plant population dynamics across biomes, and help explain biogeographic variation across tropical forests, such as familial dominance of the Dipterocarpaceae in SE Asia. However, they also raise questions about the role of PSFs in maintaining tropical diversity.Statement of authorshipRMS, SER, SJD and KGP designed the experiment. RMS conducted the experiment and collected data. RMS analyzed data with input from KGP and SER. RMS wrote the first draft of the manuscript, and all authors contributed to subsequent revision and preparation of the manuscript.

scholarly journals Effects of three plantation coniferous species on plant-soil feedbacks and soil physical and chemical properties in semi-arid mountain ecosystems

2020 ◽  
Author(s):  
Chun Han ◽  
Yongjing Liu ◽  
Cankun Zhang ◽  
Yage Li ◽  
Tairan Zhou ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Physicochemical Properties ◽  
Soil Fertility ◽  
Tree Species ◽  
Water Conservation ◽  
Soil Nutrient ◽  
Soil Physicochemical Properties ◽  
Plantation Forest ◽  
Plant Soil ◽  
Semi Arid

Abstract Background: Large-scale afforestation can significantly change the ground cover and soil physicochemical properties, especially the soil fertility maintenance and water conservation functions of artificial forests are very important in semi-arid mountain ecosystems. However, how different tree growth affect soil nutrient and soil physicochemical properties following afforestation and which is the best plantation tree species for improving soil fertility and water conservation functions remain largely unknown. Methods: This study investigated the soil nutrient contents of three plantations with different tree species (Larix principis-rupprechtii, Picea crassifolia, Pinus tabuliformis), soils and plant-soil feedbacks, as well as the interaction between soil physicochemical properties. Results: The results revealed that the leaf and litter layer strongly influence soil nutrient availability through biogeochemical processes: P. tabuliformis has higher organic carbon, ratio of organic carbon to total nitrogen (C:N) and organic carbon to total phosphorus (C:P) in the leaves and litter layer than L. principis-rupprechtii or P. crassifolia, suggesting that higher C:N and C:P hinder litter decomposition. As a result, the L. principis-rupprechtii and P. crassifolia plantation forests significantly improve soil nutrients and clay components than the P. tabuliformis plantation forest. Furthermore, the L. principis-rupprechtii and P. crassifolia plantation forests significantly improved the soil capacity, soil total porosity, and capillary porosity, decreased soil bulk density, and enhanced water storage capacity than the P. tabuliformis plantation forest. In conclusion, the results of this study showed that the strong link between plants and soil is tightly coupled to C:N and C:P, and there had a close correlation between soil particle size distribution and soil physicochemical properties. Conclusions: Therefore, our results recommend planting the L. principis-rupprechtii and P. crassifolia as the preferred tree species to enhance the soil fertility and water conservation functions, especially in semi-arid regions mountain forest ecosystems.

scholarly journals Effects of Three Plantation Coniferous Species on Plant-Soil Feedbacks and Soil Physical and Chemical Properties in Semi-Arid Mountain Ecosystems

2020 ◽  
Author(s):  
Chun Han ◽  
Yongjing Liu ◽  
Cankun Zhang ◽  
Yage Li ◽  
Tairan Zhou ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Soil Fertility ◽  
Tree Species ◽  
Water Conservation ◽  
Soil Nutrient ◽  
Soil Physicochemical Properties ◽  
Litter Layer ◽  
Plantation Forest ◽  
Plant Soil ◽  
Semi Arid

Abstract Background: Large-scale afforestation can significantly change ground cover and soil physicochemical properties, especially the soil fertility maintenance and water conservation function of artificial forest is very important in semi-arid mountain ecosystems. To better understand the effects of different tree growth on soil nutrient and soil physicochemical properties following afforestation to determine the best plantation tree species for improving soil fertility and water conservation functions. Methods: This study investigated the soil nutrient contents for three different tree species (Larix principis-rupprechtii, Picea crassifolia, Pinus tabuliformis), soils and plant-soil feedbacks, as well as the interaction between soil physicochemical properties. Results: The results revealed that the leaf and litter layer strongly influences soil nutrient availability through biogeochemical processes: P. tabuliformis has higher organic carbon, C:N and C:P in the leaves and litter layer than L. principis-rupprechtii or P. crassifolia, suggesting that higher C:N and C:P hinder litter decomposition. As a result, the L. principis-rupprechtii and P. crassifolia plantation forests significantly improve soil nutrients and clay component than P. tabuliformis plantation forest. Furthermore, the the L. principis-rupprechtii and P. crassifolia plantation forests significantly improved the soil capacity, soil total porosity and capillary porosity, decreased soil bulk density, and enhanced water storage capacity than P. tabuliformis plantation forest. In conclusion, the results of this study show that the strong link between plants and soil is tightly coupled to C:N and C:P, and there had strong correlation between soil particle size distribution and soil physicochemical properties. Conclusions: Therefore, our results recommend planting the L. principis-rupprechtii and P. crassifolia as the preferred tree species to enhance the soil fertility and water conservation functions, especially in semi-arid regions mountain forest ecosystems.

scholarly journals Effects of three plantation coniferous species on plant-soil feedbacks and soil physical and chemical properties in semi-arid mountain ecosystems

2020 ◽  
Author(s):  
Chun Han ◽  
Yongjing Liu ◽  
Cankun Zhang ◽  
Yage Li ◽  
Tairan Zhou ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Physicochemical Properties ◽  
Soil Fertility ◽  
Tree Species ◽  
Water Conservation ◽  
Soil Nutrient ◽  
Soil Physicochemical Properties ◽  
Plantation Forest ◽  
Plant Soil ◽  
Semi Arid

Abstract Background: Large-scale afforestation can significantly change the ground cover and soil physicochemical properties, especially the soil fertility maintenance and water conservation functions of artificial forests are very important in semi-arid mountain ecosystems. However, how different tree growth affect soil nutrient and soil physicochemical properties following afforestation and which is the best plantation tree species for improving soil fertility and water conservation functions remain largely unknown. Methods: This study investigated the soil nutrient contents of three plantations with different tree species (Larix principis-rupprechtii, Picea crassifolia, Pinus tabuliformis), soils and plant-soil feedbacks, as well as the interaction between soil physicochemical properties. Results: The results revealed that the leaf and litter layer strongly influence soil nutrient availability through biogeochemical processes: P. tabuliformis has higher organic carbon, ratio of organic carbon to total nitrogen (C:N) and organic carbon to total phosphorus (C:P) in the leaves and litter layer than L. principis-rupprechtii or P. crassifolia, suggesting that higher C:N and C:P hinder litter decomposition. As a result, the L. principis-rupprechtii and P. crassifolia plantation forests significantly improve soil nutrients and clay components than the P. tabuliformis plantation forest. Furthermore, the L. principis-rupprechtii and P. crassifolia plantation forests significantly improved the soil capacity, soil total porosity, and capillary porosity, decreased soil bulk density, and enhanced water storage capacity than the P. tabuliformis plantation forest. In conclusion, the results of this study showed that the strong link between plants and soil is tightly coupled to C:N and C:P, and there had a close correlation between soil particle size distribution and soil physicochemical properties. Conclusions: Therefore, our results recommend planting the L. principis-rupprechtii and P. crassifolia as the preferred tree species to enhance the soil fertility and water conservation functions, especially in semi-arid regions mountain forest ecosystems.

scholarly journals Farmers' Knowledge Is the Basis for Local Level Agro-Forestry Management: The Case of Lemo Woreda in Hadiya Zone, Ethiopia

2021 ◽  
Vol 5 ◽  
Author(s):  
Yohannes Horamo ◽  
Munyaradzi Chitakira ◽  
Kowiyou Yessoufou
Keyword(s):  
Soil Fertility ◽  
Tree Species ◽  
Crop Yields ◽  
Local Level ◽  
Forestry Management ◽  
Negative Effect ◽  
Questionnaire Surveys ◽  
Development Workers ◽  
Agro Forestry

This research was designed to investigate the hypothesis that farmers practising traditional agro-forestry which dates back for centuries have accumulated immense knowledge of agro-forestry, which can be captured and incorporated into formal development programmes to improve it. Farmers' knowledge must be documented, valued and integrated in order to maximise its importance for planning and decision-making. This research aimed to investigate and document farmers' knowledge of managing agro-forestry and the contribution to sustainable management of natural resources. Accordingly, questionnaire surveys were conducted in six villages from three peasant associations. In total, 73 households were selected for interview and the data collected were analysed using SPSS (Statistical Package for Social Science) version 26. The findings revealed tree species that contribute to crop yield improvement and the important role agro-forestry trees play with regard to soil fertility. Farmers' strategies to associate trees and shrubs in their farmlands were revealed. Tree species with a negative effect on crop yields were identified and recorded. Farmers reported and ranked in the order of importance, opportunities and constraints in the management of agro-forestry. Farmers' accumulated knowledge of tree–crop and tree–animal interactions, the role of trees in soil fertility, crop and livestock improvement, revealed in the study can significantly enhance the stainability of agriculture. If local knowledge is not documented, it remains largely inaccessible to development workers seeking solutions to locally defined problems.

scholarly journals Role of small-scale trees plantation and farmers' attitude and skill toward propagation of indigenous and exotic trees: The case of Sidama, Ethiopia

2021 ◽  
Vol 21 (105) ◽  
pp. 18804-18823
Author(s):  
YG Keneni ◽  
◽  
AF Senbeta ◽  
G Sime
Keyword(s):  
Soil Fertility ◽  
Tree Species ◽  
Agricultural Land ◽  
Tree Cover ◽  
Small Scale ◽  
Grevillea Robusta ◽  
Tree Plantation ◽  
Exotic Trees ◽  
Indigenous Trees

The tree land cover in Ethiopia is declining due to deforestation, agricultural land expansion, overgrazing, firewood use and construction. Farm tree plantation has a potential to improve tree cover and the country's vision towards reducing greenhouse gases (GHG) emission by 2030. This study was conducted in Sidama of Ethiopia to assess the role of small-scale tree plantations, and the attitudes and skills of farmers in propagating and conserving indigenous trees as compared to exotic ones, and to identify major impediments for exotic and indigenous tree plantation. By using stratified random sampling, 149 household heads were selected and interviewed, and the tree plantation practices of 46 randomly selected farmers were observed. Advice and support given to farmers concerning tree plantation and nursery care were collected from 16 Woreda Rural Development Experts. During the study a total of 46 tree species were identified, and 92% of the trees on the farmland were exotic. The percentage composition of the five most dominant tree species were Eucalyptus spp. (79.6%), Cupressus spp (8.5%), Cordia africana (4.8%), Grevillea robusta (3.3%), and Millettia ferruginea (1.8%). The trees provide several direct and indirect socio-economic and ecological importance (construction, fuel, income, medicinal value, fencing, asset for present and next generation, fodder for livestock, garden shade, aesthetic, recreation, spiritual value, improve soil fertility and environmental impact remediation). The majority of farmers prefer exotic trees due to their fast growth, ease of nursery preparation and fast establishment, and higher income generation in shorter period. Though farmers like to plant indigenous trees for their ecological services such as improving soil fertility, producing durable household utensils, shading and other ecological values; land shortage and lack of knowledge on plant biology, nursery preparation and propagation method constrained its plantation. Therefore, introduction of appropriate technologies to the existing farming system is required for sustainable indigenous tree plantation in the study area.

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