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中国农学通报 ›› 2015, Vol. 31 ›› Issue (22): 1-6.doi: 10.11924/j.issn.1000-6850.casb14100139

所属专题: 农业生态

• 林学 园艺 园林 •    下一篇

化学固沙剂对退化沙地植物多样性与微生物多样性的影响

温学飞   

  1. (宁夏农林科学院荒漠化治理研究所,银川 750002)
  • 收稿日期:2014-10-31 修回日期:2015-03-23 接受日期:2015-05-25 出版日期:2015-08-20 发布日期:2015-08-20
  • 通讯作者: 温学飞
  • 基金资助:
    宁夏农林科学院自主研发项目“化学固沙剂对植物生长及土壤环境的影响”(NKYJ-13-07);自治区科技支撑项目“宁夏土地沙漠化动态监测及预警机制研究”。

Influence of Sand Fixation Chemicals on Biodiversities of Plants and Microorganisms on Degraded Sands

Wen Xuefei   

  1. (Institute of Desertification Control, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002)
  • Received:2014-10-31 Revised:2015-03-23 Accepted:2015-05-25 Online:2015-08-20 Published:2015-08-20

摘要: 化学-生物固沙是一种有效固沙技术。为了解化学固沙剂对沙地植物多样性与微生物多样性的影响,以450、600、750 kg/hm2固沙剂和未喷施固沙剂(CK)为研究处理,生物、微生物多样性分析结果表明:应用固沙剂后群落重要值随着优势度增加而增加,随着优势度降低而降低;各处理均比对照群落高度、盖度、生物量有提高,表明应用固沙剂后对群落的生长具有促进作用,以600 kg/hm2处理最好。固沙剂喷施量的增加植物、微生物多样性都表现为减少,而植物、微生物优势度都表现为增加。植物多样性与微生物线性相关,同样植物优势度与微生物优势度存在线性相关。植物通过影响土壤环境,进而影响土壤微生物群落结构和多样性。

关键词: 扁桃, 扁桃, 外源肥, 叶片, 矿质营养元素

Abstract: Chemical-biological sand fixation is an effective technology for sand control. In order to understand the effects of sand fixation chemicals on biodiversities of plants and microorganisms, this study investigated treatments such as 450, 600, 750 kg/hm2 chemical and took no chemical treatment as control, and analyzed the biodiversities of plants and microorganisms. The results showed that after application of chemical, the importance value of community increased as dominance. The height, coverage and biomass increased in all treatments except control, which indicated that sand fixation chemical had an improving effect on growth of community and treatment of 600 kg/hm2 had the best effect. As the application amount increased, the biodiversity of plants and microorganisms both decreased, however, the dominance both increased. There was a linear correlation between diversity of plants and microorganisms, as well as the dominance. Plants influenced the soil environment and then had an impact on the structure of microorganism community and its biodiversity.