植物营养与肥料学报2010,16(6)：1464-1471 Plant Nutrition and Fertilizer Science
广东省典型土壤类型和土地利用方式
对土壤酶活性的影响
徐华勤"，2，章家恩·，冯丽芳，全国明"，胡蓉蓉"，毛丹鹃"
（1华南农业大学农业部生态农业重点开放实验室，广东广州510642；
2湖南农业大学农业生态研究所，湖南长沙410128）
摘要：通过野外调查与室内分析，研究了广东省韶关红壤、广州赤红壤、雷州砖红壤3个典型地带性土壤分布区4 种不同土地利用方式（包括林地、果园、草地和农田）对表层（0～20cm）土壤几种主要酶活性（过氧化领酶、纤维素醇、蔗糖酶、脲酶、蛋白酶活性)的影响。结果表明，不同土壤类型和不同土地利用方式对土壤酶活性均有一定影响，其中土地利用方式影响更为明显。土壤酶活性多表现为果阅和林地较高，农田和草地较低；而土壤过氧化氢酶对土地利用方式和土壤类型的响应均较其它几种酶弱。典范相关分析结果表明，全磷、速效磷、速效氮含量是土壤养分因子中影响土壤酶活性的最重要因素，5种酶中纤维素酶和蛋白酶活性与土壤养分因子关系最大，面土壤酶活性之间也存在着一定的共性关系。
关键词：土地利用方式；土壤类型；土壤酶活性
中图分类号：S155.4；S154.2
文献标识码：A
文章编号：1008505X(2010)061464-08
Effectsoftypical soiltypesandlandusepatternsonsoilenzyme
activitiesinGuangdongProvince
XU Hua-qin'2, ZHANG Jia-en'', FENG Li-fang', QUAN Guo-ming', HU Rong-rong', MAO Dan-juan'(I Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the Peoples Republic of China/
South China Agricultural Unirersity,Guangdong，Guangzhou 510642,China;
2 Institute of Agricultural Ecology, Hunan Agricultural University, Changsha 410128, China)
Abstract: Soil enzyme activities have been used as bioindicators for soil quality and health due to their high sensi tivity to soil changes. With the intensity and amplification of land use, the impacts on soil fertility, nutrient status and soil enzyme activities by land use changes and soil types received more and more attentions. In this paper, field investigation and lab experiment analysis were caried out to study activities of catalase, cellulose, invertase, ure ase, and protease in the surface soil (O 20cm). Three soil types including Latosolic red soil, Red soil, Latosol and four land use pattems including grassland, forest, farmland and orchard were selected in this study. Results showed that land use pattems and soil types affected activities of cellulose, invertase, urease, and protease. Higher activities in forest lands and orchard were found compared to those in the cropland and grassland. Soil type had less pronounced effect on enzyme activities compared to agricultural land use pattern. The response of activity of ctalase was weaker than those of the other studied enzymes. The results of canonical correlation analysis showed that total P, available P and available N were the domain factors influencing soil enzyme activities, especially cellulose and protease activities., There were also correlations between the various soil enzyme activities.
Key word: land use patterns; soil type; soil enzyme activities 收稿日期：2010-01-20
接受日期：2010-03-22
基金项目：国家自然科学基金（30770403，408718）；中国博士后科学基金（20080440761）；广东省自然科学基金（815106420100048，
9451064201003801）资助。
作者简介：徐华勤（1972），女，潮南省长沙市人，博士后，副研究员，主要从事农业生态和土壤生态研究。E-mail：xu7541@163.com
*通讯作者E-mail;jeanzh@ scau.edu.cn 万方数据