LIU Meng-yun,AN Shao-shan,CHANG Qing-rui.Features of Soil Organic Carbon Under Different Land Use in Mountain Area of Southern Ningxia[J].Research of Soil and Water Conservation,2005,12(03):47-49,114.
宁南山区不同土地利用方式土壤有机碳特征研究
- Title:
- Features of Soil Organic Carbon Under Different Land Use in Mountain Area of Southern Ningxia
- Keywords:
- Guyuan in Ningxia; land usage modes; the content of organic C; profile property; organic C density
- 分类号:
- S153.61;F301.24
- 摘要:
- 在宁夏固原上黄试验区，对灌木林地、农地、天然草地、果园和人工草地5种土壤的化学性质进行了分析，探讨了土地利用方式对土壤有机碳的影响。结果表明1表层土壤有机碳含量表现为天然草地>灌木林地>农地>人工草地>果园；④灌木林地和果园土壤有机碳含量随土层加深而变化幅度较小，而天然草地、人工草地和农地随土层加深而递减的幅度较大；（四）0～20cm天然草地和灌木林地的有机碳密度普遍偏高，而农地、果园和人工草地则均较低；而20～40cm和0～40cm的土层内土壤有机碳密度相比之下灌木林地、农地和天然草地相差不大，而果园和人工草地相对较低。
- Abstract:
- In Shanghuang, Guyuan experimental region of Ningxia, bush forest land, farmland, natural meadow, orchard and artificial meadow were researched. Soil organic C under different usage modes were researched. The results were shown: 1 the content of organic C was natural meadow>bush forest land>farmland>artificial meadow>orchard in top layer; ④the content of organic C of bush forest land and orchard land decrease slowly, but farmland, natural meadow and artificial meadow decrease rapidly as depths of profile increases; (四) the organic C density of natural meadow and bush forest land is higher than farmland, artificial meadow and orchard at large in 0～20 cm; while the organic C density of natural meadow, bush forest land and farmland is higher than artificial meadow and orchard in 20～40 cm and 0～40 cm.
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备注/Memo
收稿日期:2004-12-22;改回日期:。
基金项目:国家自然科学基金（40461006）；国家“十五”科技攻关项目（2001BA606A-04）；西北农林科技大学优秀人才专项基金（04ZX011）
作者简介:刘梦云（1973- ），女，讲师，陕西蒲城人，在读博士，主要从事土地资源与地理信息系统研究。