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不同土地利用方式对桂西南岩溶山地土壤酶活性的影响(PDF)

《广西植物》[ISSN:1000-3142/CN:45-1134/Q]

期数:
2014年04期
页码:
460-466
栏目:
植物生态与生物地理
出版日期:
2014-07-20

文章信息/Info

Title:
Effects of different land-use types on soil enzyme activity in karst mountain areas of Southwest Guangxi
文章编号:
1000-3142(2014)04-0460-07
作者:
徐广平12 顾大形1 潘复静1 孙英杰1 罗艾滢1 何成新1 黄玉清1*
1. 广西壮族自治区 中国科学院 广西植物研究所, 广西 桂林 541006; 2. 国土资源部/广西岩溶动力学 重点实验室(中国地质科学院岩溶地质研究所), 广西 桂林 541004
Author(s):
XU Guang-Ping12 GU Da-Xing1 PAN Fu-Jing1 SUN Ying-Jie1 LUO Ai-Ying1 HE Cheng-Xin1 HUANG Yu-Qing1*
1. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences, Guilin 541006, China; 2. Karst Dynamics Laboratory, MLR and GZAR,(Institute of Karst Geology, CAGS), Guilin 541004, China
关键词:
岩溶山地 土地利用方式 土壤酶活性
Keywords:
karst mountain areas land-use types soil enzyme activity
分类号:
Q948.113
DOI:
10.3969/j.issn.1000-3142.2014.04.006
文献标识码:
A
摘要:
以桂西南典型喀斯特地区不同土地利用方式(裸地、农田、荒草地、灌丛和次生林)为对象,研究不同土地利用方式下土壤酶活性的变化规律。结果表明:土地利用方式对土壤酶活性影响显著,除蔗糖酶外,脲酶、蛋白酶、淀粉酶、碱性磷酸酶、酸性磷酸酶、过氧化氢酶、多酚氧化酶和纤维素酶总体变化规律相似,次生林土壤酶活性显著高于其它土地利用方式,其次是灌丛和农田,荒草地较低,裸地酶活性最低; 总体上相同土地利用方式下湿季酶活性高于干季。相关性分析表明土壤脲酶、蛋白酶、淀粉酶、碱性磷酸酶、纤维素酶和多酚氧化酶等相互之间关系密切,并与土壤主要养分含量呈显著相关性,是土壤质量评价的一个参考指标。不同土地利用方式下土壤微环境、植被构成等因素导致了土壤酶活性的差异性。为实现桂西南岩溶山地生态系统的健康发展,在目前人为干扰不可避免的情况下,该区域应尽量选择以林地恢复为主的土地利用方式。
Abstract:
Five kinds of land use types with the same altitude at a typical rocky desertification mountainous region of Pingguo County in Guangxi were chosen to investigate the changes in soil enzyme activity under different land use in karst mountain areas of Southwest Guangxi. Five kinds of land use included secondary forest(SF),bushwood(B),waste grassland(WG),waste land(WL)and cropland(C). The results showed that different land use types significantly influenced the enzyme activity. Soil urease,proteinase,amylase,alkaline phosphatase,acid phosphatase,peroxidase,polyphenol oxidase and cellulose behaved the same change besides of invertase. The rate order of soil enzyme activity was SF>B>C>WG>WL relatively. With an exception of polyphenol oxidase,soil enzymes with the same land use at wet season were higher than that in dry season on the whole. Correlation analysis showed a significant relation among soil urease,proteinase,amylase,alkaline phosphatase,cellulose,polyphenol oxidase and so on,which also related soil nutrition content with indicators,therefore,soil enzyme could be useful for reflecting soil quality. The significant difference was observed in different land use types owing to special factors such as framing soil micro-environment and plant species composition. Now,human interference was inevitable in this region,in order to realize the healthy development in typical rocky desertification mountainous region of Pingguo County in Guangxi,the soil enzyme changes should be taken into consideration,the land use types with rare disturbance and woodland restoration mode of land use should be chosen as far as possible.

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备注/Memo

备注/Memo:
收稿日期: 2013-08-08
修回日期: 2013-11-12
基金项目: 国家自然科学基金(41361057); 广西自然科学基金(2012GXNSFBA053074); 中国科学院“西部之光”人才培养计划项目(科发人教字[2011]180号); 国家科技支撑计划项目(2011BAC09B02); 广西植物研究所基本业务费(桂植业11004); 岩溶动力学重点实验室基金(KDL2011-09)。
作者简介: 徐广平(1977-),男,博士,副研究员,主要从事植物生态学研究,(E-mail)xugpgx@163.com。 *通讯作者: 黄玉清,博士,研究员,主要从事植物生理生态学研究,(E-mail)hyqcoco@gxib.cn。
更新日期/Last Update: 2014-07-20