欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2019, Vol. 35 ›› Issue (19): 83-90.doi: 10.11924/j.issn.1000-6850.casb18020035

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

双龙沟废弃采金区人工栽植沙棘后植物群落组成和土壤性质的变化研究

常丽1,2,吴春荣1,2,何芳兰1,2,王理德1,2,胥宝一1,2   

  1. 甘肃省治沙研究所 甘肃河西走廊森林生态系统国家定位观测研究站
  • 收稿日期:2018-02-06 修回日期:2019-06-12 接受日期:2018-10-31 出版日期:2019-07-08 发布日期:2019-07-08
  • 通讯作者: 吴春荣
  • 基金资助:
    林业重点工程科技支撑项目“祁连浅山区天然次生林恢复保育技术研究”(TBKJZC1401)；甘肃省治沙研究所甘肃省荒漠化与风沙灾害防 治国家重点实验室（培育基地）开放基金项目“石羊河下游退耕地植物群落优势种的生理生态特征研究”(GSDC201504)、“盐及干旱条件下K+、Na+主 要渗透调节物质在沙拐枣中积累及分配的研究”(GSDC201501)、“民勤绿洲边缘人工梭梭林土壤有机碳分布特征”(GSDC201505)。

Artificial Planting of Hippophae rhamnoides in Abandoned Goldfield of Shuanglong Gully: Effects on Community Composition and Soil Properties

  • Received:2018-02-06 Revised:2019-06-12 Accepted:2018-10-31 Online:2019-07-08 Published:2019-07-08

PDF (PC)

291

摘要： 双龙沟是石羊河上游的主要集水区,其植被恢复状况的好坏直接影响到下游居民的用水安全。[目的]本研究旨在分析人工造林是否能够促进该区植物群落的构建和土壤养分的积累。[方法]选取双龙沟废弃采金区典型的人工沙棘林为研究对象,采用野外调查和室内实验分析的方法,研究栽植沙棘后植物群落组成和土壤性质的变化情况。[结果]共调查种子植物43种,已鉴定出41个种,分属于16个科、29个属,其中,草本植物34种,灌木9种。与对照荒地相比,栽植沙棘的区域植物种类较多(39种)且已出现灌-草分层现象,已形成由沙棘-柳叶菜组成的灌-草复合群落,而对照荒地尚未出现灌木物种,只形成了以千里光+早熟禾为优势种的草本植物群落(约12种草本)。同时,人工沙棘林内表层(0-10cm)土壤有机质含量、速效磷含量明显较高,分别是对照荒地内相应土层的11倍和9倍。[结论]在双龙沟废弃采金区人工栽植沙棘对于提高物种多样性、促进植物群落的构建以及增加土壤养分的累积等方面有一定的积极作用。

关键词: 小麦, 小麦, 低温冻害, 光合特性, 植株性状, 产量性状

Abstract: Shuanglong gully, where vegetation recovery will influence the safety of water use, is the major catchment in the Upper Reaches of Shiyang River. [Objective]The aim of this study is to test whether Afforestation can effectively restore plant communities and accumulate soil nutrients. [Method]Selecting artificial planting of Hippophae rhamnoides as the research object, based on field observation and laboratory analysis, the paper studied the community composition and soil properties of artificial seabuckthorn forest in abandoned goldfield of Shuanglong gully. [Result]The results showed that there were 43 species including shrub and herb 2 life forms, in which about 41 species had been identified, which belonged to 16 families and 29 genera. Compared to control, the plant species was richer (about 27 species), the community vertical structure was more complicated, and has shrub and herb layers, in which the community type was Hippophae rhamnoides - Epelobium hirsutum. But in the control group there was only the herb layer, and Senecio scandens and Poa annua were the dominant species. In addition, the content of soil organic matter and available phosphorous at 0-10cm soil layer in Artificial seabuckthorn forest were higher, which were 11 and 9 times as much as that of the control respectively. But there were no significant difference in soil moisture content, bulk density and mechanical composition. [Conclusion]Therefore, planting seabuckthorn in abandoned goldfield of Shuanglong gully can play a positive role in enhancing species diversity and accumulating soil nutrients.