沙坡头人工固沙植被生态系统土壤恢复研究进展

摘要/Abstract

摘要： 土壤是荒漠生态系统的重要组成部分,沙化土地的治理与恢复是人们关注的重点。沙坡头人工固沙植被区的土壤经过50 a的恢复,已得到显著的发育。结皮及亚表土层厚度随固沙年代的增加而增大,土壤颗粒组成中粘粒和粉粒含量增多,土壤容重降低,有机质和氮、磷、钾等营养元素含量增加,流动风沙土已发育成为钙积旱成土。本文探讨了降尘、生物土壤结皮和土壤微生物对土壤恢复的影响,分析土壤发育与人工植被演替的相互作用,并提出了今后的研究重点方向。

关键词: 沙坡头, 人工植被, 土壤恢复, 降尘, 微生物

Abstract: Soil is an important part of desert ecosystem. The management and restoration of desertified lands is a focus for all along time. The soil in Shapotou desert region has developed remarkably gone with the evolution of the artificial sand-binding vegetation for fifty years. The longer the period of dune stabilization, the greater the thickness of microbiotic crusts and subsoil, and the proportion of silt and clay increased significantly, and soil bulk density reduced, meanwhile the content of soil organic matter and N, P, K increased similarly, so the soil has developed from aeolian sand soil to Calcic-Orthic aridisols. The paper discussed the effect of dust and microbiotic soil crust and microbes on soil-forming process and analyzed the relation between soil-forming and evolution of artificial sand-binding vegetation and in the end advanced important future study fields.

Key words: Shapotou desert region, artificial sand-binding vegetation, soil restoration, dust, microbe

中图分类号:

S154.4

杨丽雯;周海燕;樊恒文;贾晓红;刘立超;李爱霞. 沙坡头人工固沙植被生态系统土壤恢复研究进展[J]. 中国沙漠, 2009, 29(6): 1116-1123.

YANG Li-wen;ZHOU Hai-yan;FAN Hen-wen;JIA Xiao-hong;LIU Li-chao;LI Ai-xia. Advances of Soil Restoration Research on Artificial Sand-binding Vegetation Ecosystem in Shapotou Desert Region[J]. JOURNAL OF DESERT RESEARCH, 2009, 29(6): 1116-1123.

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