不同补播年限下河南县高寒草甸地上生物量、群落多样性与

土壤养分特征的相关性研究

王伟，德科加

（青海大学 青海省畜牧兽医科学院，青海西宁 810016）

摘要：本试验以河南县高寒草甸草地类型为研究对象，研究不同补播年限下高寒草甸地上生物量、植物群落多样性与土壤养分特征的相关性。结果表明：高寒草甸补播禾本科植物可有效增加草地地上生物量，提高群落物种数和丰富度指数。同时也表明土壤水分成为本区域限制植物生长的主导因素，土壤全氮、全磷含量次之。研究结果可为高寒草甸退化草地科学改良及草地合理利用提供数据参考。

关键词：地上生物量；群落多样性；土壤养分；相关性分析

中图分类号：S812.29     文献标识码：A   文章编号：1003-7950（2017）02-0012-05

 

Correlation analysis of aboveground biomass, community diversity and soil nutrient characteristics on Alpine meadow in Henan County under different reseed year

WANG Wei etal

(Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, 810016)

Abstract: Correlation analysis of aboveground biomass, community diversity and soil nutrient characteristics on Alpine meadow in Henan County under different reseed year were studied. The results showed that reseeding Gramineous plants on Alpine meadow can effectively increase the grassland biomass on the grassland, improve the community species and richness index. While soil moisture becomes the leading factor to limit plant growth in this region, soil total nitrogen, total phosphorus content is also limit factor. The research results can provide reference for improving degraded alpine meadow grassland and rational utilization.

Key words:  Aboveground biomass; Community diversity; Soil nutrients; Correlation analysis