苏打盐碱化草原改良后植物多样性评价分析  

Analysis of plant diversity in the improvement of soda saline alkaline grassland

作　　者：司振江 黄彦 滕云 

机构地区：[1]黑龙江省水利科学研究院,黑龙江哈尔滨150080

出　　处：《黑龙江水利》2015年第7期21-25,共5页

基　　金：黑龙江省发展高新技术产业专项资金(FW06B914)

摘　　要：通过采取振动深松、对角耙、围栏封育、浅翻轻耙等技术措施对苏打盐碱化草原的改良效果进行研究评价,利用生物多样性评价方法进行分析,结果显示振动深松、对角耙、围栏封育、浅翻轻耙4种改良措施均取得显著改良效果,改良3a平均产草量较对照提高了423.8%、219%、128.6%、261.9%,特别是采用振动深松改良措施3a后,草原盖度达到90.33,人工播种的羊草盖度达到35.0,羊草相对盖度达到38.75,羊草重要值达到79.52,均匀度指数达到0.869,丰富度指数和多样性指数较改良当年分别提高了199.9%和50.8%。综合比较4种改良措施,以振动深松改良效果最显著。Based on the biodiversity assessment method to evaluate the improvement of soda saline alkaline grassland by using vibrating subsoiling, diagonal rake, fencing, shallow ploughing. It shows that the improvement measures including vibration subsoiling, diagonal rake, fencing, shallow ploughing and light harrow have achieved remarkable improvement effect. The average yield is increased by 423.8%, 219%, 128. 6%, 261.9% compared with CK in three years. In particular, the natural and artificial grassland coverage rate reaches to 90.33 and 35.0 by using of vibration subsoiling. Moreover, the artificial seeding Leymus chinensisrelative coverage rate reaches to 38.75, the important value reaches to 79.52, and the evenness index reaches to 0. 869 after vibrating subsoiling. The richness index and diversity index are increased by 199.9% and 50.8%. Thus, it can be concluded that the most significant improvement effects of vibrating subsoiling comparing the four measures to improvement measures.

关 键 词：苏打盐碱化草原 振动深松 改良措施 植物多样性 分析 

分 类 号：S156.4[农业科学—土壤学]