中国农学通报
中國農學通報
중국농학통보
CHINESE AGRICULTURAL SCIENCE BULLETIN
2013年
22期
73-77
,共5页
植被恢复模式%土壤渗透性%土壤物理性质%衡阳
植被恢複模式%土壤滲透性%土壤物理性質%衡暘
식피회복모식%토양삼투성%토양물이성질%형양
re-vegetation models%soil infiltration capability%soil physical properties%Hengyang
土壤渗透性受制于许多外在与内在的因素，与植被类型、土壤性质等关系密切。为探讨不同植被恢复模式对土壤渗透性能的影响，以裸地为对照，以土壤初渗率、稳渗率、平均渗透率与渗透总量表征土壤渗透性，对衡阳紫色土丘陵4种不同植被恢复模式的渗透性及其与土壤物理性质进行研究。结果表明：（1）4种植被恢复模式的土壤渗透性均优于裸地，各植被恢复模式土壤渗透性能大小依次为：枫香×苦楝＞牡荆×刺槐＞紫薇×糯米条＞狗尾草×狗芽根＞裸地，且初渗率、稳渗率、平均渗透率与渗透总量的关系符合方程：α=0.4865α1+0.4982α2+0.5123α3+0.5202α4（其中，αi为指标的标准化数据）；（2）Horton水分入渗模型拟合的相关系数R2值≥0.775，对所研究的区域的土壤水分入渗过程具有较好的适用性；（3）相关分析表明：土壤渗透性与＞2 mm的土壤组成的百分比、2~0.25 mm土壤组成的百分比、毛管百分比、非毛管百分比和饱和导电率为呈显著或极显著正相关，与土壤容重为呈显著或极显著负相关，与土层深度和＜0.25 mm土壤组成的百分比相关性不明显。
土壤滲透性受製于許多外在與內在的因素，與植被類型、土壤性質等關繫密切。為探討不同植被恢複模式對土壤滲透性能的影響，以裸地為對照，以土壤初滲率、穩滲率、平均滲透率與滲透總量錶徵土壤滲透性，對衡暘紫色土丘陵4種不同植被恢複模式的滲透性及其與土壤物理性質進行研究。結果錶明：（1）4種植被恢複模式的土壤滲透性均優于裸地，各植被恢複模式土壤滲透性能大小依次為：楓香×苦楝＞牡荊×刺槐＞紫薇×糯米條＞狗尾草×狗芽根＞裸地，且初滲率、穩滲率、平均滲透率與滲透總量的關繫符閤方程：α=0.4865α1+0.4982α2+0.5123α3+0.5202α4（其中，αi為指標的標準化數據）；（2）Horton水分入滲模型擬閤的相關繫數R2值≥0.775，對所研究的區域的土壤水分入滲過程具有較好的適用性；（3）相關分析錶明：土壤滲透性與＞2 mm的土壤組成的百分比、2~0.25 mm土壤組成的百分比、毛管百分比、非毛管百分比和飽和導電率為呈顯著或極顯著正相關，與土壤容重為呈顯著或極顯著負相關，與土層深度和＜0.25 mm土壤組成的百分比相關性不明顯。
토양삼투성수제우허다외재여내재적인소，여식피류형、토양성질등관계밀절。위탐토불동식피회복모식대토양삼투성능적영향，이라지위대조，이토양초삼솔、은삼솔、평균삼투솔여삼투총량표정토양삼투성，대형양자색토구릉4충불동식피회복모식적삼투성급기여토양물이성질진행연구。결과표명：（1）4충식피회복모식적토양삼투성균우우라지，각식피회복모식토양삼투성능대소의차위：풍향×고련＞모형×자괴＞자미×나미조＞구미초×구아근＞라지，차초삼솔、은삼솔、평균삼투솔여삼투총량적관계부합방정：α=0.4865α1+0.4982α2+0.5123α3+0.5202α4（기중，αi위지표적표준화수거）；（2）Horton수분입삼모형의합적상관계수R2치≥0.775，대소연구적구역적토양수분입삼과정구유교호적괄용성；（3）상관분석표명：토양삼투성여＞2 mm적토양조성적백분비、2~0.25 mm토양조성적백분비、모관백분비、비모관백분비화포화도전솔위정현저혹겁현저정상관，여토양용중위정현저혹겁현저부상관，여토층심도화＜0.25 mm토양조성적백분비상관성불명현。
Soil infiltration depends on many internal and external factors, and is closely correlated with vegetation types, soil characteristics. In order to determine the effects of re-vegetation models to soil infiltration, the author used bare land as a control and measured soil initial infiltration, stable infiltration, average infiltration and accumulative water quantity as soil infiltration capability, and determined the relationship between soil infiltration capability and soil physical properties under 5 re-vegetation models. The results showed that:(1) the infiltration capability of 4 re-vegetation models was higher than that of bare land, the order of soil infiltration capability from high to low was:Liquidamdar formosana×Melia azedarach>Vitex negundo var. cannabifolia × Robinia pseudoacacia>Lagerstroemia indica × Abelia chinensis>Comm. Setaria viridis × Cynodon dactylon>the bare land, and the relationship among the soil initial infiltration, stable infiltration, average infiltration and accumulative water quantity match the equlity: α=0.4865α1+0.4982α2+0.5123α3+0.5202α4 (αi was the standard data of the index). (2) The fitting effect of Horton infiltration model on soil infiltration process in each plot was good (R2≥0.775), which had good applicability. (3) Correlation analysis showed: there were significant or very significant positive relationship between soil infiltration and>2 mm and 2-0.25 mm soil percentage, capillary porosity and non-capillary porosity percentage, saturd electricity, and there were significant or very significant negative relationship between soil infiltration and bulk density and there were no significant or very significant negative relationship between soil infiltration and soil deep,<0.25 mm soil percentage.
