沙漠化逆转过程中土壤性状演变综述

被引：24

作者：

张玉兰

陈利军

机构：

[1] 中国科学院沈阳应用生态研究所

来源：

生态学杂志 | 2010年 / 29卷 / 07期

关键词：

沙漠; 沙漠化逆转; 土壤生物学活性; 指示; 土壤质量;

D O I：

10.13292/j.1000-4890.2010.0207

中图分类号：

X144 [环境地理学];

学科分类号：

083001 ;

摘要：

沙漠化日益严重,沙漠化土地的恢复与重建具有重大的生态效益、经济效益和社会效益。目前沙漠化的主要沙源是流沙,在流动沙丘上造林固沙防止流沙扩散,进而使得沙漠化逆转,对保护农田、草场和交通都很重要。本文从土壤物理特性(持水能力、颗粒特征)、化学特性(碳、氮、磷等)和土壤生物学活性(微生物生物量、土壤呼吸、土壤酶活性等)方面综述了土壤特性对沙漠化逆转过程的响应,为阐明沙地生态恢复过程中的土壤特性响应机理提供理论依据;并提出今后该领域的研究建议:采用微生物群落组成来表征土壤质量变化,也可采用分子生物学技术确定土壤演变的功能微生物的变化,改变目前仅限于土壤酶活性、微生物生物量以及传统培养法用于沙地土壤生物学活性的研究,以便更好地探索荒漠区流动沙丘固定后土壤质量演变过程中微生物活性动态变化及其与植被关系,揭示人工恢复沙地导致土壤质量演变的关键微生物特征。

引用

页码：1440 / 1450

页数：11

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