CAJ | 학술논문

本文以典型的衡阳紫色土丘陵坡地不同植被恢复阶段为研究对象，采用空间代替时间序列方法，选用立地条件基本相似的草坡阶段（Grassplot， GT）、灌草阶段（Frutex and grassplot，FG）、灌丛阶段（Frutex， FX）和乔灌阶段（ Arbor and frutex ， AF），通过调查取样和实验分析，对不同植被恢复阶段的土壤酶、养分与微生物及其相关性进行了研究。结果表明，1）随着恢复阶段的演替，脲酶、多酚氧化酶、蔗糖酶与过氧化氢酶的活性显著增加，在每个恢复阶段，脲酶、多酚氧化酶、蔗糖酶与过氧化氢酶活性随着土层的加深而逐渐减弱，脲酶与多酚氧化酶、蔗糖酶与过氧化氢酶活性呈显著正相关关系，蔗糖酶与脲酶和多酚氧化酶呈极显著正相关。2）随着恢复阶段的演替，土壤养分的时空变化与土壤酶活性的变化趋势基本一致，土壤有机碳、全氮与碱解氮含量呈上升趋势，土壤pH随植被恢复和演替而降低，随土壤深度的增加而上升，与土壤酶活性的变化趋势相反；脲酶与有机碳、全氮、碱解氮呈极显著正相关，与pH呈显著负相关，多酚氧化酶与有机碳、碱解氮呈极显著正相关，与全氮、速效磷、速效钾呈显著正相关，与pH呈显著负相关，蔗糖酶活性与有机碳、全氮、碱解氮、速效磷、速效钾呈显著正相关。3）不同恢复阶段土壤细菌数量最多，真菌数量和放线菌数量与细菌数量的变化趋势各不相同；细菌平均数量为AF＞FX＞FG＞GT，真菌数量为FG＞GT＞FX＞AF，放线菌数量为 GT＞FX＞FG＞AF。4）主成分分析揭示脲酶与多酚氧化酶可作为衡阳紫色土丘陵坡地土壤质量评价的指标。研究结果将丰富该地区植物生态学与恢复生态学的内容，为衡阳紫色土丘陵坡地生态系统的恢复与重建提供了重要依据。
본문이전형적형양자색토구릉파지불동식피회복계단위연구대상，채용공간대체시간서렬방법，선용입지조건기본상사적초파계단（Grassplot， GT）、관초계단（Frutex and grassplot，FG）、관총계단（Frutex， FX）화교관계단（ Arbor and frutex ， AF），통과조사취양화실험분석，대불동식피회복계단적토양매、양분여미생물급기상관성진행료연구。결과표명，1）수착회복계단적연체，뇨매、다분양화매、자당매여과양화경매적활성현저증가，재매개회복계단，뇨매、다분양화매、자당매여과양화경매활성수착토층적가심이축점감약，뇨매여다분양화매、자당매여과양화경매활성정현저정상관관계，자당매여뇨매화다분양화매정겁현저정상관。2）수착회복계단적연체，토양양분적시공변화여토양매활성적변화추세기본일치，토양유궤탄、전담여감해담함량정상승추세，토양pH수식피회복화연체이강저，수토양심도적증가이상승，여토양매활성적변화추세상반；뇨매여유궤탄、전담、감해담정겁현저정상관，여pH정현저부상관，다분양화매여유궤탄、감해담정겁현저정상관，여전담、속효린、속효갑정현저정상관，여pH정현저부상관，자당매활성여유궤탄、전담、감해담、속효린、속효갑정현저정상관。3）불동회복계단토양세균수량최다，진균수량화방선균수량여세균수량적변화추세각불상동；세균평균수량위AF＞FX＞FG＞GT，진균수량위FG＞GT＞FX＞AF，방선균수량위 GT＞FX＞FG＞AF。4）주성분분석게시뇨매여다분양화매가작위형양자색토구릉파지토양질량평개적지표。연구결과장봉부해지구식물생태학여회복생태학적내용，위형양자색토구릉파지생태계통적회복여중건제공료중요의거。
By using the spatial series to replace time series , four typical sampling plots , grassplot ( GT) , frutex and grassplot(FG), frutex(FX), and arbor and frutex(AF), were selected to explore the relationships among the soil enzyme activities , nutrients and microbes .The four communities on sloping-land with purple soils were similar and typical, and denoted four different successive stages in Hengyang of Hunan Province , South-central China.The results showed that the activities of soil URE ( Urease ) , PPO ( Polyphenol oxidase ) , INV ( Invertase ) and CAT ( Catalase ) are significantly increased from GT to AF , and these activities are decreased with the increase of soil layer depth in every re-vegetation stages .The URE activity is significantly and positively correlated with the PPO , INV and CAT activities , and the INV activity is very , significantly and positively correlated with the URE and PPO activities.The soil nutrients contents such as SOC ( Soil organic C ) , TN ( Total N ) and AN ( Available N ) are increased with the succession of re-vegetation , while soil pH values are decreased .The URE activity is very , significantly and positively correlated with the SOC , TN and AN contents and is significantly and negatively correlated with soil pH .The PPO activity is very , significantly and positively correlated with the SOC and AN contents, is significantly and positively correlated with the TN , AP(Available P) and AK(Available K) contents, and is significantly and negatively correlated with soil pH value .The INV activity is significantly and positively correlated with the SOC, TN, AN, AP and AK contents.The numbers of bacteria are the highest in the four re-vegetation stages , with re-vegetation succession process , the average number of bacteria is in the following order:AF>FX>FG>GT(P<0.05), the order for average fungi count is:FG>GT>FX>AF(P<0.05), and for the actinomycetes is:GT>FX>FG>AF(P<0.05).Principal component analysis shows that the URE and PPO can be regarded as indexes to assess soil quality in sloping-land with purple soils in Hengyang .This study , to some degree, enriches and broadens the vegetation ecology and restoration ecology of this area and provides important theoretical basis for ecosystem restoration and reconstruction in sloping-land with purple soils in Hengyang of Hunan Province , South-central China .