| 典型岩溶区植被恢复对土壤养分的影响 |
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| 引用本文： | 邓艳,蒋忠诚,罗为群,祈晓凡,覃星铭.典型岩溶区植被恢复对土壤养分的影响[J].地球与环境,2010,38(1). |
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| 作者姓名： | 邓艳 蒋忠诚 罗为群 祈晓凡 覃星铭 |
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| 作者单位： | 中国地质科学院岩溶地质研究所,岩溶生态系统与石漠化治理重点开放实验室,广西,桂林,541004 |
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| 基金项目： | 国家青年科学基金项目(40902074);;国家“十一五”科技支撑计划课题(2006BAC01A10);;岩溶地质研究所所控项目(2009009) |
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| 摘 要： | 对典型岩溶地区不同植被恢复(草丛、灌草丛、灌丛、乔幼林和成熟林)过程中的土壤养分进行研究,结果表明:土壤养分随着植被的恢复呈波折状上升,但是各恢复阶段过程中的土壤有机质、有效N、P、K、有效Zn、Cu、Mn、Fe含量存在无显著性差异(P0.05),弃耕后2～3年的草丛土壤养分含量可以达到成熟林的养分水平;土壤pH值与有机质、有效N、P、K、有效Zn、Cu、Mn、Fe含量存在不同程度的负相关关系,降低土壤的pH值,可以有效的提高石灰土肥力;土壤养分具有明显的表聚性。在岩溶区,退耕还草、退耕还林、种植牧草和自然恢复是石漠化地区较好的生态重建和植被恢复方式。
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| 关 键 词： | 岩溶 植被恢复 土壤养分 |
Eeefects of Vegetation Restoration on Soil Nutrient in Typical Karst Area |
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| DENG Yan,JIANG Zhong-cheng,LUO Wei-qun,QI Xiao-fan,QIN Xing-ming.Eeefects of Vegetation Restoration on Soil Nutrient in Typical Karst Area[J].Earth and Environment,2010,38(1). |
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| Authors: | DENG Yan JIANG Zhong-cheng LUO Wei-qun QI Xiao-fan QIN Xing-ming |
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| Institution: | Institute of Karst Geology;CAGS;Key laboratory of Karst ecosystem and rocky desertification improvement;Guilin;Guangxi;541004;China |
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| Abstract: | Understanding the relationship between plant community succession and soil nutrient dynamics is crucial in intervening vegetation restoration.This paper reported the results from a study carried out in a typical karst area,Guangxi,China,with emphasis on soil nutrient dynamics during vegetation restoration on abandoned farmlands of this area.The results showed that :soil fertility improved with the vegetation recovery basically but with slight drop in some stage in different nutrient,but no significant diffe... |
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| Keywords: | karst vegetation restoration soil nutrient |
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