摘要
对种植白三叶草的桃园(生草桃园)和非生草桃园的桃树节肢动物群落进行分析比较.结果表明:生草桃园桃树天敌、中性类群和植食类群数量分别是非生草桃园的1.48、1.84和0.64倍,而节肢动物群落个体总数无显著差异;与非生草桃园相比,生草桃园桃树节肢动物群落丰富度(83.733±4.932)、多样性(4.966±0.110)和均匀性指数(0.795±0.014)均显著升高,而优势度指数(0.135±0.012)显著降低.稳定性指数S/N、Sd/Sp与非生草桃园均无显著差异,但Nn/Np、Nd/Np及Sn/Sp均显著高于非生草桃园.生草桃园桃树节肢动物群落多样性与稳定性指数Nd/Np、Sd/Sp、S/N存在显著的负相关关系,而与Nn/Np、Sn/Sp无相关性;非生草桃园多样性与稳定性指数Nn/Np、Nd/Np存在显著的正相关关系,而与其他稳定性指数无显著相关性.
A comparative study was conducted on the arthropod community in peach orchards with and without ground cover vegetation. In the orchard with ground cover vegetation, the individuals of beneficial, neutral, and phytophagous arthropods were 1.48, 1.84 and 0.64 times of those in the orchard without ground cover vegetation, respectively, but the total number of arthropods had no significant difference with that in the orchard without ground cover vegetation. The species richness, Shannon’s diversity, and Pielou’s evenness index of the arthropods in the orchard with ground cover vegetation were 83.733±4.932, 4.966±0.110, and 0.795±0.014, respectively, being significantly higher than those in the orchard without ground cover vegetation, whereas the Berger-Parker’s dominance index was 0.135±0.012, being significantly lower than that （0.184±0.018） in the orchard without ground cover vegetation. There were no significant differences in the stability indices S/N and Sd/Sp between the two orchards, but the Nn/Np, Nd/Np, and Sn/Sp in the orchard with ground cover vegetation were 0.883±0.123.1714±0.683, and 0.781±0.040, respectively, being significantly higher than those in the orchard without ground cover vegetation. Pearson’s correlation analysis indicated that in the orchard with ground cover vegetation, the Shannon’s diversity index was significantly negatively correlated with Nd/Np, Sd/Sp, and S/N but had no significant correlations with Nn/Np and Sn/Sp, whereas in the orchard without ground cover vegetation, the diversity index was significantly positively correlated with Nn/Npand Nd/Np and had no significant correlations with Sd/Sp, Sn/Sp, and S/N.
出处
《应用生态学报》
CAS
CSCD
北大核心
2011年第9期2303-2308,共6页
Chinese Journal of Applied Ecology
基金
国家环保部水体污染控制与治理科技重大专项(2008ZX07101-005-01)
上海市重大科技攻关项目(08dz1900401
08dz1900402)
上海市农业科学院青年科技基金项目(201008)资助
