Comparative Study on Phosphorus Contents of Soil in Karst Rocky Desertification Area during Eco-restoration Process in Guangxi Province
石漠化生态恢复过程中土壤磷含量的比较研究(英文)作者机构：中山大学生命科学学院广东广州510275 河池学院化学与生命科学系广西宜州546300
出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)
年 卷 期：2008年第9卷第3期
页 面：141-144页
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
基 金：广西自然科学基金项目(桂科自0832273) 广西壮族自治区教育厅:广西高校重点建设实验室--桂西北特色资源研究与开发实验室资助项目(桂教科研2006<4>号) 香港嘉道理农场暨植物园"华南地区生物多样性保育"博士研究生基金项目~~
主 题：Phosphorus content in soil Karst rocky desertification Eco-restoration
摘 要：[Objective] The research aimed to study change law of phosphorus content of soil in karst rocky desertification region(KRD) during eco-restoration process such as Northwest Guangxi Province.[Method] The soil samples were collected from typical KRD in Pingguo County and Yizhou *** determining quotas of different soil samples such as soil total phosphorus content and available phosphorus content were detected,in addition the soil total phosphorus content,available phosphorus content, urease activity, catalase activity and organic matter content in different soil samples were analyzed comparatively.[Result] Aspect,vegetation type and recovery time generated obviously influences on phosphorus contents in different soil *** concrete influence order was listed as follow: phosphorus content in soil of south slope was higher than that in soil of north slope;phosphorus content in soil where Zenia insignis Chun was planted was higher than that in soil of closed forest and that of soil where Dendrocalamus minor Var. amoen was planted,additionally,phosphorus increased with recovery time. Urease activity could be used as a monitoring index of soil fertility because it is related to the change of phosphorus content.[Conclusion] The soil of karst rocky desertification region in Northwest Guangxi Province could be recovered gradually if excessive human disturbance was *** proper natural method of recovery promoted by human was taken,the recovery would reach a better result.
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