CAJ | 학술논문

对天津滨海新区典型盐碱湿地土壤种子库进行了研究.通过选取三个标准样地进行野外调查,采用种子萌发实验确定土壤种子库的活性、种类及数量;对土壤种子库的物种组成和数量、物种多样性指数、相似性指数及时空分布等特征进行分析,结果表明,滨海新区盐碱湿地土壤种子库共有26植物,种子库的密度在6809～30644粒/m~2之间;种子库的生态优势度在0.51～0.81之间,多样性指数相对较低,其中Shannon-Wiener指数最高为1.78;土壤种子库与地面植被之间的相似性指数较低,最低为0.21;种子库的垂直分布特征较为明显,其中0～5cm层种子数量最多,种子数最层间差异显著或极显著;此外,还研究了土壤种子库萌发随时间变化的规律,得出其萌发数量随时间变化的曲线,为今后土壤种子库应用于植被恢复提供了参考.
대천진빈해신구전형염감습지토양충자고진행료연구.통과선취삼개표준양지진행야외조사,채용충자맹발실험학정토양충자고적활성、충류급수량;대토양충자고적물충조성화수량、물충다양성지수、상사성지수급시공분포등특정진행분석,결과표명,빈해신구염감습지토양충자고공유26식물,충자고적밀도재6809～30644립/m~2지간;충자고적생태우세도재0.51～0.81지간,다양성지수상대교저,기중Shannon-Wiener지수최고위1.78;토양충자고여지면식피지간적상사성지수교저,최저위0.21;충자고적수직분포특정교위명현,기중0～5cm층충자수량최다,충자수최층간차이현저혹겁현저;차외,환연구료토양충자고맹발수시간변화적규률,득출기맹발수량수시간변화적곡선,위금후토양충자고응용우식피회복제공료삼고.
This paper studied typical wetlands' soil seed banks (SSB) in Tianjin Binhai New Area and analyzed the composition, diversity and temporal and spatial distribution of SSB in three standard plots through field investigation and germinated seeds. Results showed that there were 26 species in the SSB, with species density 6,809～30,644/m~2 and ecological dominance 0.51～0.81. The diversity index showed a relatively low value, with the highest Shannon-Wiener value of 1.78. The similarity indicator between SSB and aboveground vegetation was low as well, with the lowest value of 0.21. Vertical distribution demonstrated significantly obvious condition with 0-5cm having the most species. Furthermore, it still explained the germinating regulation changing over time, which provided reference for vegetation restoration using SSB.