[1]王向栋,戴全厚,李翠莲,等.草海上游石漠化过程中土壤抗蚀性变化[J].水土保持研究,2017,24(03):13-18,23.
　WANG Xiangdong,DAI Quanhou,LI Cuilian,et al.Variation of Soil Anti-erodibility During Rocky Desertification in Upper Reaches of Caohai[J].Research of Soil and Water Conservation,2017,24(03):13-18,23.
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草海上游石漠化过程中土壤抗蚀性变化

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 24 期数: 2017年03期 页码: 13-18,23 栏目: 出版日期: 2017-06-28
Title:
Variation of Soil Anti-erodibility During Rocky Desertification in Upper Reaches of Caohai
作者:
王向栋1, 戴全厚1, 李翠莲1,2, 严友进1
1. 贵州大学 林学院, 贵阳 550025;
2. 息烽县林业绿化局, 贵州 息烽 551100
Author(s):
WANG Xiangdong1, DAI Quanhou1, LI Cuilian1,2, YAN Youjin1
1. College of Forestry, Guizhou University, Guiyang 550025, China;
2. Xifeng Forestry and Afforestation Bureau, Xifeng, Guizhou 551100, China
关键词:
土壤学; 土壤抗蚀性; 主成分分析; 石漠化; 草海
Keywords:
pedology; soil anti-erodibility; principal component analysis; karst rocky desertification; Caohai
分类号:
S157
摘要:
以草海流域上游的石漠化区为研究对象，研究不同等级石漠化条件下土壤抗蚀能力的差异，利用空间代替时间的方法，探讨草海上游区石漠化过程中土壤抗蚀性变化规律，为当地石漠化治理和湿地保护提供参考。通过实地调研，采集不同石漠化程度区的土样并进行室内指标测定，利用主成分分析方法选取了10个土壤理化指标对样地土壤抗蚀能力进行评价。结果表明：（1） 所选10项理化指标可以较为全面地综合评价不同石漠化程度土壤抗蚀能力，土壤团聚状况、分散率、分散系数、 > 0.25 mm水稳性团聚体含量、 > 0.5 mm水稳性团聚体含量、结构破坏率、 < 0.05 mm粉黏粒含量这7项可以作为评价的优选指标，有机质含量、 < 0.001 mm黏粒含量、土壤团聚度这3项指标次之。（2） 无石漠化CK样地（2.19） > 轻度石漠化L样地（1.19） > 重度石漠化S1样地（0.85） > 中度石漠化M样地（-1.35） > 重度石漠化S2样地（-2.88），其中中度石漠化样地（M）和重度石漠化样地（S2）为负值，其余均为正值，差异明显。在石漠化过程中土壤抗蚀能力总体呈下降趋势，但是在石漠化发展后期，土壤抗蚀能力反而会有上升的可能。
Abstract:
We analyzed the differences between soil anti-erodibility under different rocky desertification conditions in karst rocky desertification region in upper reaches of Caohai. By using space instead of time, changes of soil anti-erodibility were investigated during rocky desertification in upper reaches of Caohai, aiming to provide reference for desertification control and wetland protection of Caohai. Soil samples from different karst rocky desertification level areas were taken according to field investigation. Soil physicochemical properties were tested in laboratory, and ten of them were selected to evaluate the soil anti-erodibility by principal component analysis with Spass 18.0. The results indicated that: (1) soil anti-erodibility under different rocky desertification conditions could be comprehensive evaluated by 10 indicators; the contents of silt/clay < 0.05 mm, reunion situation, dispersion rate, dispersion coefficient, water-stable aggregates > 0.25 mm, water-stable aggregates > 0.5 mm, structural damage rate were optimal indexes to evaluate soil anti-erodibility, and the indices organic matter, content of clay < 0.001 mm, reunion degree came next； (2) the order of anti-soil erosion degrees of different rocky desertification areas obtained by principal component analysis was: sample CK of non rocky desertification(2.19) > sample L of light rocky desertification(1.19) > sample S1 of intense rocky desertification(0.85) > sample M of moderate rocky desertification(-1.35) > sample S2 of intense rocky desertification(-2.88), the values of comprehensive anti-erodibility indexes of Sample M and Sample S2 were negative, others were positive, the differences were obvious. Soil anti-erodibility declined gradually during rocky desertification, but it could also increase in late stage of rocky desertification.

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备注/Memo

收稿日期:2016-10-04;改回日期:2016-11-05。
基金项目:国家重点研发计划课题（2016YFC0502604）；国家自然科学资助项目（41671275，41461057）；贵州省应用基础重大专项课题（黔科合JZ字[2014]2002）；贵州省重大专项（黔科合重大专项字[2016]3022号）
作者简介:王向栋(1986-),男,河南济源人,硕士研究生,助理工程师,主要研究方向:恢复生态学。E-mail:122673435@qq.com
通讯作者:戴全厚(1969-),男,陕西长武人,博士,教授,博士生导师,主要从事水土保持与生态恢复重建研究。E-mail:qhdairiver@163.com

更新日期/Last Update: 1900-01-01