Effects on Latosol Physical Properties Changing Woodland to Grassland in Hainan

doi:10.11733/j.issn.1007-0435.2011.03.020

›› 2011, Vol. 19 ›› Issue (3): 478-481.DOI: 10.11733/j.issn.1007-0435.2011.03.020

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Effects on Latosol Physical Properties Changing Woodland to Grassland in Hainan

ZHAO Qing-hui¹, ZHU Fei¹, DENG Wan-gang¹, QI Zhi-ping², WU Wei-dong¹

1. Hainan University, College of Agriculture, Haikou, Hainan Province 570228, China;
2. Tropical Crop Genetic Resource Institute of Chinese Academy of Tropical Agriculture Science, Danzhou, Hainan Province 571737, China

Received:2010-10-27 Revised:2011-03-19 Online:2011-06-15 Published:2011-06-15

林地改种牧草对砖红壤物理质量性状的影响

赵庆辉¹, 祝飞¹, 邓万刚¹, 漆智平², 吴蔚东¹

1. 海南大学农学院, 海南海口, 570228;
2. 中国热带农业科学院热带作物品种资源研究所, 海南, 儋州, 571737

通讯作者: 吴蔚东,E-mail:wdwu@sohu.com
作者简介:赵庆辉(1986- ),男,云南昆明市人,硕士,研究方向为热带土壤质量与管理,E-mail:zhao85986086@163.com
基金资助:
国家自然科学基金项目“海南热带球囊霉素相关土壤蛋白质及其对土壤结构影响”(40761024);海南大学211工程项目“热带作物遗传育种与生态保育”资助

Abstract

Abstract: Physical properties of 5 grassland plots and their corresponding nearby woodland controls were investigated to study the effect of replanting grass in woodland on latosols in Hainan.Mean soil bulk density decreased 3.91%,from 1.33 g·cm^-3 to 1.28 g·cm^-3 after replanting grass in woodlands.Meanwhile,sand contents decreased 15.89% in grasslands.Clay and silt contents increased 17.08% and 18.86% in grassland,respectively.Soil macro-aggregate(>250 μm) increased 6.28%,whereas soil micro-aggregate(53～250 μm) and aggregates of sand and silt(<53 μm) decreased 57.78% and 13.29%,respectively.Soil permeability increased 77.08%.Mean water permeability coefficient(K10) rose from 0.96 to 1.7 at 10℃.This study indicates that replanting grass in woodlands improved all soil physical properties.

Key words: Land use change from forest to grassland, Soil physical quality property, Latosol, Hainan

摘要： 选取海南5个牧草地样地,以样地附近立地条件一致的林地为对照,研究海南热带砖红壤林地改种牧草后土壤物理性状变化。结果表明:林地改种牧草后土壤平均容重降低3.91%,从1.33 g·cm^-3下降到1.28 g·cm^-3;砂粒含量减少15.89%,粘粒和粉粒含量分别增加17.08%和18.86%;微团聚体(53~250μm)和粉粒与粘粒大小的团聚体(<53μm)含量分别减少57.78%和13.29%,大团聚体(>250μm)含量增加26.28%;同时,土壤渗透性增加77.08%,10℃时渗透系数K10从平均0.96上升到1.70。尽管未能达到显著水平,但林地改种牧草后各种土壤物理性状均有一定改善。

关键词: 林地改种牧草, 土壤物理质量性状, 砖红壤, 海南

CLC Number:

S152

ZHAO Qing-hui, ZHU Fei, DENG Wan-gang, QI Zhi-ping, WU Wei-dong. Effects on Latosol Physical Properties Changing Woodland to Grassland in Hainan[J]. , 2011, 19(3): 478-481.

赵庆辉, 祝飞, 邓万刚, 漆智平, 吴蔚东. 林地改种牧草对砖红壤物理质量性状的影响[J]. , 2011, 19(3): 478-481.

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Effects on Latosol Physical Properties Changing Woodland to Grassland in Hainan

林地改种牧草对砖红壤物理质量性状的影响

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