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| 生态毯覆盖对若尔盖沙化草地土壤环境及植被恢复的影响 |
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张利,李杨红,范宇,徐舟,康英,任君芳,何建社
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阿坝州林业科学技术研究所,阿坝州林业科学技术研究所,阿坝州工业经济研究所,阿坝州林业科学技术研究所,阿坝州林业科学技术研究所,阿坝州林业科学技术研究所,阿坝州林业科学技术研究所
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| 摘要: |
| 为遏制若尔盖草原沙化进一步蔓延，急需开展草地沙化治理模式研究。试验选取若尔盖草原
半固定沙地和流动沙地为研究对象，分析了生态毯覆盖对两种沙地类型土壤环境、植物群落盖度和生物
量的影响。结果表明：生态毯覆盖 1 a 后，有效提高了沙地植物群落盖度和生物量，流动沙地中生态毯覆
盖的群落盖度和生物量较对照处理的增量高于半固定沙地，半固定沙地生态毯覆盖的群落盖度和生物量
分别是对照处理的 1.20 倍和 1.19 倍，而流动沙地则分别为对照的 4.74 倍和 2.83 倍；生态毯覆盖均降低
了两种类型沙地的土壤温度，增加了土壤水分，提高了土壤最大持水量；生态毯覆盖对两种类型沙地土
壤电导率的改善效果一致，均比对照高 0.01 ms · cm-1；半固定沙地中生态毯覆盖和对照处理的土壤容重
相同，流动沙地中生态毯覆盖的土壤容重较对照处理低 0.02 g · cm-3；生态毯覆盖初期对流动沙地的恢复
效果优于半固定沙地。生态毯覆盖对土壤环境指标的影响均未达到显著水平，可能是由于试验年限较短
所致。 |
| 关键词: 生态毯 沙化草地 土壤环境 生物量 若尔盖草原 |
| DOI： |
| 分类号: |
| 基金项目:四川省科技计划项目：生态毯技术在若尔盖沙化治理中的运用与推广(2016FZ0042) |
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| Effects of Eco-blanket Covering on Soil Environment and Vegetation Restoration of the Desertification Grassland in Zoigê |
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zhangli,liyanghopng,fanyu,xuzhou,康英,renjunfang and hejianshe
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Aba Prefecture Forestry Science and Technology Research Institute,Aba Prefecture Forestry Science and Technology Research Institute,Study on the industrial economy in Aba Prefecture,Aba Prefecture Forestry Science and Technology Research Institute,Aba Prefecture Forestry Science and Technology Research Institute,Aba Prefecture Forestry Science and Technology Research Institute,Aba Prefecture Forestry Science and Technology Research Institute
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| Abstract: |
| In order to cut off the extension of the desertification in Zoigê grasslands, it is urgent to carry out
the study of grassland desertification control model. The effects of eco-blanket cover on soil environmental , plant
community coverage and biomass were studied in the semi - fixed sandy land and the mobile sandy land of Zoigê
grassland. The results showed that, one year later, the eco-blanket covering effectively improved plant community
coverage and biomass. Compared to the treatment data, the increment in the mobile sandy land was higher than
that in the semi-fixed sandy land， the plant community coverage and biomass treated with eco-blanket covering
were 1.20 and 1.19 times respectively, while mobile sandy land was 4.74 and 2.83 times, respectively. The ecoblanket covering also decreased soil temperature, increased soil water content and the maximum water holding
capacity in both sandy lands, and the soil electric conductivity was increased by 0.01 ms · cm-1 in both sandy
lands. The soil bulk density of the cover and control in the semi-fixed sandy land was equal, while that of thecover was 0.02 g · cm-3 lower than control in the mobile sandy land. The effect of the eco-blanket covering in the
recovery of mobile sandy land was better than that of semi-fixed sandy land in the early stage of covering. The
influence of the eco-blanket covering in soil environment indicators was not significant, which may be due to the
shorter test cycle. |
| Key words: eco-blanket desertification grassland soil environment biomass Zoigê grassland |
