[1]吴雪,贡璐,冉启洋,等.阿拉尔垦区土壤理化因子与酶活性的通径分析[J].水土保持研究,2013,20(03):48-54.
　WU Xue,GONG Lu,RAN Qi-yang,et al.Path Analysis of Soil Physicochemical Properties and Enzymatic Activities in the Aler Reclamation Area[J].Research of Soil and Water Conservation,2013,20(03):48-54.
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阿拉尔垦区土壤理化因子与酶活性的通径分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 20 期数: 2013年03期 页码: 48-54 栏目: 出版日期: 2013-06-28
Title:
Path Analysis of Soil Physicochemical Properties and Enzymatic Activities in the Aler Reclamation Area
作者:
吴雪1, 贡璐1,2, 冉启洋1,2, 解丽娜1, 朱美玲1
1. 新疆大学 资源与环境科学学院, 乌鲁木齐 830046;
2. 教育部 绿洲生态重点实验室, 乌鲁木齐 830046
Author(s):
WU Xue1, GONG Lu1,2, RAN Qi-yang1,2, XIE Li-na1, ZHU Mei-ling1
1. College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China;
2. Key Laboratory of Oasis Ecology, Ministry of Education, Urumqi 830046, China
关键词:
土壤生态学; 土壤理化性质; 通径分析; 土壤酶; 塔里木河上游
Keywords:
soil ecology; soil physical and chemical properties; path analysis; soil enzyme; upper reaches of the Tarim River
分类号:
S154.2
摘要:
土壤酶活性可以反映土壤生物化学过程的方向和强度。以新疆塔里木河上游阿拉尔垦区作为研究区域，选择8 a棉田、30 a棉田、人工林、天然林、荒草地、撂荒地及盐碱地等不同土地利用方式的样地为研究对象，综合考虑土壤理化和酶活性指标，对这两者的相关性进行深入探讨。结果表明：酶活性的较高值出现在绿洲内部的人工林、天然林和8 a棉田，较低值出现在盐碱地和荒草地。由通径分析及决定系数可知，全氮是影响该地区酶活性的主导因子；速效磷对脲酶和转化酶存在显著的直接正效应，是影响脲酶和转化酶活性的主导因子；速效钾是影响过氧化氢酶和转化酶活性的重要因素。与简单相关或多元回归分析方法相比，通径分析能对土壤理化性质和土壤酶之间的关系进行更客观、全面地解释。
Abstract:
Soil enzyme activity can reflect the direction and strength of soil biochemical processes. The Aler reclamation area of upper reaches of Tarim River was selected as the study area.We chose sample plots of different land use type as the research sites including 8-year cotton field, 30-year cotton field, forest plantation, natural forest, grassland, abandoned land, and saline-alkali land, soil physicochemical property and the enzyme activity indices were considered, and the correlations between the soil physicochemical property and the enzyme activity of the Aler reclamation area were further discussed. The results showed that the enzymatic activities were higher in forest plantation, natural forest and 8-year cotton field while lower in saline-alkali land and abandoned land. Path analysis and determination coefficient showed that total nitrogen was the dominant factor affecting the soil enzyme activity in the region. The available P directly influences urease and invertase activities, and the available K was the main factor affecting catalase and invertase activities. Compared with simple correlation and multiple regression analysis method, path analysis could more objectively and comprehensively explain the relationships of soil enzyme activities and soil physicochemical properties.

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备注/Memo

收稿日期:2012-11-05;改回日期:2012-11-29。
基金项目:新疆维吾尔自治区自然科学基金（2011211B04）
作者简介:吴雪(1990-),女,浙江温州人,本科生,主要研究方向为干旱区生态学。E-mail:wuxue0902@163.com
通讯作者:贡璐(1978-),女,江苏丹阳人,教授,博士(后),硕士生导师,主要研究方向为干旱区资源与环境。E-mail:gonglu721@163.com

更新日期/Last Update: 1900-01-01