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Evaluation of soil fertility Quality and Environmental Driving Factors in Different soil Types of Artificial Forests

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Meteorological and Environmental Research 2024年第2期15卷 64-70页

作者： Songyu YU Zhenhui LIAO Mingwu YANG Ronghui HU Yuanyuan SHI Junyu ZHAO Guangxi Zhuang Autonomous Region State-owned Sanmenjiang Forest Farm Liuzhou 545006China Guangxi Zhuang Autonomous Region State-owned Huangmian Forest Farm Luzhai 545618China Guangxi Forestry Research Institute Nanning 530002China

The aim was to clarify the environmental driving factors of soil fertility indicators in artificial forests of Guangxi and comprehensively evaluate the soil fertility *** collecting data on the current status of soil in artificial forests,the spatial distribution of major soil fertility indicators was analyzed,and the distribution map of the fertility index of artificial forests in the entire region and the comprehensive fertility index of artificial forests of different soil types were *** correspondence analysis method was used to analyze soil fertility indicators and environmental factors,and the environmental driving factors of soil fertility indicators for artificial forests of the main soil types in Guangxi were *** results showed that over 90%of the soil fertility index of artificial forests in the entire region was between 0.20 and *** order of soil fertility index of different soil types of artificial forests from high to low was yellow brown soil>yellow red soil>yellow soil>red soil>limestone soil>latosolic red soil>*** artificial forests of latosolic red soil,the correlation between soil alkaline nitrogen and organic matter,annual average temperature was high,while the correlation between soil available phosphorus and organic matter,pH was high,and the correlation between soil available potassium and environmental factors such as slope,altitude,rainfall,accumulated temperature,and slope aspect was *** artificial forests of red soil,the correlation between soil alkaline nitrogen and slope,altitude was high,while the correlation between soil available phosphorus and accumulated temperature,rainfall was high,and the correlation between soil available potassium and pH was *** artificial forests of limestone soil,there was a high correlation between soil alkaline nitrogen and slope,organic matter,a high correlation between soil available phosphorus and accumulated temperature,rainfall,and a high correlation bet

关键词： soil fertility index GIS Forest soil Canonical correspondence analysis

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Drivers of the Chemical Quality of Market Gardening soils in the Urban and Peri-Urban Environment of Bobo-Dioulasso (Burkina Faso): Impact of Fertilizers Sources and Sites Location

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Journal of Agricultural Chemistry and Environment 2023年第1期12卷 1-15页

作者： Fabèkourè Cédric Kambire Sheick Ahmed Khalil S. B. Sangare R. Adèle Ouedraogo Adama Zanga Ouattara Institute for Research in Applied Sciences and Technologies (IRSAT)/National Centre for Scientific and Technological Research (CNRST) Bobo-Dioulasso Burkina Faso Nazi Boni University/Laboratory of Study and Research on soil fertility (LERF) Bobo-Dioulasso Burkina Faso

Urban and peri-urban agriculture plays a key role by providing many goods and services. In particular, it provides diversified food and employment for vulnerable groups (youth and women). However, it often involves negative externalities due to non-conventional soils fertility management practices. This study aimed to investigate the chemical quality of soils over six (06) sites of the market gardening area of Bobo-Dioulasso (Burkina Faso) as affected by fertilizers uses and sites location. Thirty (30) representative market gardening farms, located in urban, semi-urban and rural areas, were randomly selected from a baseline survey database. Within each farm, composite soil samples made up of 3 individual cores were taken over the 0 - 15 cm soil depth for determining soils carbon, total nitrogen, available phosphorus contents and pH-water. These data were normalized and summarized to compute a synthetic soil fertility index (SFI). The data processing was focused on a Principal Component Analysis and an Ascendant Hierarchical Classification in order to make a typology of the vegetable farms. Fertilizers management effects on soils quality were compared through Variance Analysis (ANOVA) following a GLM procedure in Rstudio software. As main results, soils chemical parameters, except for available K, were affected by the location of the sites. soils in urban farms are less acidic (on average pH = 6.9), while semi-urban and rural sites (Samadeni, Nakaguana) have more acidic soils. However, the latter site had the highest values of C and N. Moreover, the long-term application of organic matter sources results in improving of the chemical quality of the market garden soil. The SFI is positively correlated with the rate of applied organic fertilizers, and the cultivation duration. On the other hand, soil quality tends to decrease with the expansion of the area, due to a dilution effect of the organic fertilizer doses. All these results suggest that there is a real scope to

关键词： Gardening soil fertility index Chemical fertility Bobo-Dioulasso

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