云南地理环境研究
雲南地理環境研究
운남지리배경연구
YUNNAN GEOGRAPHIC ENVIRONMENT RESEARCH
2012年
4期
92-96
,共5页
菜子湖%退耕还湖%土壤有机质%湿地土壤
菜子湖%退耕還湖%土壤有機質%濕地土壤
채자호%퇴경환호%토양유궤질%습지토양
Caizi Lake%returning farmland to lake%soil organic matter%wetland soil
以安庆菜子湖区退耕还湖湿地土壤为研究对象，分析退耕还湖后退耕年限、植被恢复状况及人类活动对土壤有机质含量变化的影响。结果表明：植被恢复良好的湿地土壤有机质含量明显高于地表裸露；随着退耕年限的增加，湿地土壤有机质含量呈现上升趋势，退耕20年后湿地表层土壤有机质含量基本达到原始湿地水平，而亚层土壤有机质含量仍显著低于原始湿地；圩内水产养殖湿地土壤有机质含量显著低于圩外水产养殖湿地和原始湿地。结果分析表明退耕后植被恢复状况及水产养殖等人类活动影响退耕后湿地土壤有机质含量变化，减少人类活动干扰有利于退耕后湿地生态自然恢复。
以安慶菜子湖區退耕還湖濕地土壤為研究對象，分析退耕還湖後退耕年限、植被恢複狀況及人類活動對土壤有機質含量變化的影響。結果錶明：植被恢複良好的濕地土壤有機質含量明顯高于地錶裸露；隨著退耕年限的增加，濕地土壤有機質含量呈現上升趨勢，退耕20年後濕地錶層土壤有機質含量基本達到原始濕地水平，而亞層土壤有機質含量仍顯著低于原始濕地；圩內水產養殖濕地土壤有機質含量顯著低于圩外水產養殖濕地和原始濕地。結果分析錶明退耕後植被恢複狀況及水產養殖等人類活動影響退耕後濕地土壤有機質含量變化，減少人類活動榦擾有利于退耕後濕地生態自然恢複。
이안경채자호구퇴경환호습지토양위연구대상，분석퇴경환호후퇴경년한、식피회복상황급인류활동대토양유궤질함량변화적영향。결과표명：식피회복량호적습지토양유궤질함량명현고우지표라로；수착퇴경년한적증가，습지토양유궤질함량정현상승추세，퇴경20년후습지표층토양유궤질함량기본체도원시습지수평，이아층토양유궤질함량잉현저저우원시습지；우내수산양식습지토양유궤질함량현저저우우외수산양식습지화원시습지。결과분석표명퇴경후식피회복상황급수산양식등인류활동영향퇴경후습지토양유궤질함량변화，감소인류활동간우유리우퇴경후습지생태자연회복。
Soils in wetlands recovered from farmland were sampled to analyze changes of soil organic matter (SOM) content affected, by recovering years', vegetation restoration degree, and human activities. The results showed that SOM content was higher under good vegetation than that in bard wetlands; SOM content increased with recovering years; surface SOM content was no significant difference between wetlands with 20 recovering years and natural wetlands, while subsurface SOM content was lower under wetlands with 20 recovering years than that under natural wetlands; SOM content was lower in wetlands with pond aquaculture than that in wetlands with high net aquaculture. That indicated that vegetation restoration increased SOM and human activities decrease SOM accumulation after returning farmland to lake.
