Effects of Different Eco-grassland Models on Soil Wind Erosion and Physical and Chemical Properties on the Barren Slope

SUN Tie-jun; XIAO Chun-li; TENG Wen-jun

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Effects of Different Eco-grassland Models on Soil Wind Erosion and Physical and Chemical Properties on the Barren Slope

更新时间：2024-11-07

- Effects of Different Eco-grassland Models on Soil Wind Erosion and Physical and Chemical Properties on the Barren Slope
- Vol. 25, Issue 3, (2011)
- 作者机构：
  
  北京市农林科学院,北京草业与环境研究发展中心,北京1000972. 密云县农业技术推广站,北京,101500
- 作者简介：
- 基金信息：
- DOI：
  CLC： S157.2
- Published：2011
- 稿件说明：
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SUN Tie-jun, XIAO Chun-li, TENG Wen-jun. Effects of Different Eco-grassland Models on Soil Wind Erosion and Physical and Chemical Properties on the Barren Slope[J]. 2011, 25(3).
DOI：

SUN Tie-jun, XIAO Chun-li, TENG Wen-jun. Effects of Different Eco-grassland Models on Soil Wind Erosion and Physical and Chemical Properties on the Barren Slope[J]. 2011, 25(3). DOI：

摘要

荒坡地土壤贫瘠、植被稀疏

冬春季风蚀沙化严重

试验在密云水库库区荒坡地构建不同生态草地建植模式

研究草地建植对土壤理化性质改善作用和土壤风蚀防治效果

结果表明

生态草地建植当年地上生物量达2 246.9kg/hm2以上

越年后明显增加

可达5 941.6kg/hm2;生态草地建植可使荒坡地地表粗糙度增加1.7～14.5倍

土壤风蚀减少44.9%～75.1%

其中

草地雀麦+扁穗冰草建植模式地表粗糙度增加效果最佳

且不同建植模式土壤风蚀防治效果顺序为草地雀麦+扁穗冰草建植模式>草地雀麦+老芒麦建植模式>披碱草建植模式>草地雀麦+草木樨草建植模式>草地雀麦建植模式;同时

荒坡地生态草地建植可以降低土壤容重

增加总孔隙度

改善土壤物理性质

其中

草地雀麦+老芒麦草地建植1a

可使土壤容重降低8.7%

总孔隙度增加16.1%

荒坡地草地建植还可增加土壤有机质

降低土壤pH值

提高速效氮含量

草地雀麦+老芒麦建植模式与草地雀麦建植模式构建1a

土壤速效氮增加75.4%～79.1%。

Abstract

There was less vegetation on the barren slope due to less nutrition in the soil so that wind erosion and desertification occurred more badly.The experimentation was carried into execution to design different eco-grassland models to prevent wind erosion and improve soil physical and chemical properties in the barren slope in the Miyun reservoir watershed.The results showed that there was more 2 246.9 kg/hm2 of overground biomass in the year when eco-grasslands were planted.And it added to 5 941.6 kg/hm2 grea...

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