Spatial-temporal Dynamics of Soil Seed Banks of Heavy Metals Habitat at Wasted Lands in Drought Mining Area

ZHANG Tao; HE Ming-zhu; CHEN Zhi-ping; CHE Ke-jun; HU Tian-guang; CHENG Bin-rang

doi:10.13961/j.cnki.stbctb.2014.04.071

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Spatial-temporal Dynamics of Soil Seed Banks of Heavy Metals Habitat at Wasted Lands in Drought Mining Area

- Spatial-temporal Dynamics of Soil Seed Banks of Heavy Metals Habitat at Wasted Lands in Drought Mining Area
- Bulletin of Soiland Water Conservation Vol. 33, Issue 4, Pages: 296-300(2014)
- 作者机构：
  
  1. 白龙江林业管理局林业科学研究所,甘肃,兰州,730070
  2. 中国科学院寒区旱区环境与工程研究所沙坡头沙漠试验研究站,甘肃,兰州,730000
  3. 甘肃省林业调查规划院,甘肃,兰州,730020
  4. GEF(global environment facility)甘肃省综合生态系统管理信息中心,甘肃,兰州,730020
  5. 甘肃省白龙江林业管理局,甘肃,兰州,730050
  6. 金川公司园林公司,甘肃,金昌,737100
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.04.071
  CLC：
- Published：2014
- 稿件说明：
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ZHANG Tao, HE Ming-zhu, CHEN Zhi-ping, et al. Spatial-temporal Dynamics of Soil Seed Banks of Heavy Metals Habitat at Wasted Lands in Drought Mining Area[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 296-300.
DOI：

ZHANG Tao, HE Ming-zhu, CHEN Zhi-ping, et al. Spatial-temporal Dynamics of Soil Seed Banks of Heavy Metals Habitat at Wasted Lands in Drought Mining Area[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 296-300. DOI： 10.13961/j.cnki.stbctb.2014.04.071.

摘要

通过不同季节野外调查取样和室外萌发试验

分析了干旱矿区重金属生境土壤种子库的时空动态。研究结果表明

该区域土壤种子库储量随季节变化存在差异。土壤种子库储量10月最高

5月份减小至最低。土壤种子库物种种类随时间的变化与土壤种子库储量相似;土壤中种子主要分布在0-5 m土层中

该层种子比例平均占种子库全部种子数量的76.5%。随着土层深度的增加

种子数量逐渐减少。5-10 cm土层中种子比例平均只占种子库全部种子数量的23.5%。10 cm以下土层几乎没有种子分布。

Abstract

The spatial-temporal dynamics of soil seed banks of heavy metals habitat at wasted lands in drought mine area was analyzed through the field investigation and sampling in different seasons and outdoor germination experiment. The results showed that the reserves of soil seed bank varied seasonally. It reached a maximum in October

and drop down gradually to a minimum in May. The species variation trend of soil seed bank with time was similar to that of soil seed bank reserves. The seeds in the soil were mainly distributed in 0-5 cm soil layer

which accounted for 76.5% of the total number of seeds. The seed quantity reduce gradually with the increase of soil depth

and it is only 23.5% of the total number of seeds in the 5-10 cm soil layer

and even almost none in the soil layer under 10 cm.

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