纳帕海湿地植物多样性及土壤有机质对猪拱干扰的响应

生态学杂志

纳帕海湿地植物多样性及土壤有机质对猪拱干扰的响应

姚茜¹,田昆^1,2**,肖德荣²,杨洪昇¹,曹萍麟¹

(¹西南林业大学环境科学与工程学院，昆明 650224； ²国家高原湿地研究中心，昆明 650224)

出版日期:2015-05-10 发布日期:2015-05-10

Response of plant diversity and soil organic mater to pig forage disturbance in Napahai wetland.

YAO Xi¹, TIAN Kun^1,2**, XIAO De-rong², YANG Hong-sheng¹, CAO Ping-lin¹

(¹College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China; ²National Plateau Wetlands Research Center, Kunming 650224, China)

Online:2015-05-10 Published:2015-05-10

摘要/Abstract

摘要：

以纳帕海湿地猪拱干扰下的草甸湿地为对象，研究不同猪拱干扰强度对湿地群落植物多样性及土壤理化性质的影响。结果表明：1）物种数目、多样性指数(Shannon多样性指数、Margelef丰富度、Pielou均匀度指数)和地上、地下生物量均随着放牧强度的增强而下降；2）随着土壤深度的加深，轻度猪拱干扰下，土壤容重先减少后增加，中度和重度干扰则先增加后减少；3）随着放牧强度的增强，土壤有机质含量逐渐减少，且有机质含量随着土壤深度的加深而逐渐减少，同时，上层减少的趋势较下层更为明显。可见，不合理的家猪放养导致植物多样性降低，土壤结构破坏，土壤有机质含量显著下降。

关键词: 氮磷平衡, 生态经济效益, 有机-无机肥配施, 长期定位试验

Abstract: Effects of different intensities of pig forage disturbance on plant community diversity nd soil physicochemical properties in meadow wetlands in Napahai Natural Reserve were studied. The results showed that the species number, plant diversity (including indexes of Shannon diversity, Margalef richness, and Pielou evenness), and biomass (below and aboveground) decreased as the grazing intensity increased. As the soil depth increased, the soil bulk density decreased first and then increased under light-intensity forage but its change was reversed under medium to heavy disturbance. The content of soil organic matter decreased as the grazing intensity increased. The soil organic matter content also decreased with the increase of soil depth, especially in the upper layer. Unreasonable grazing of pig was the main reason causing decrease in plant diversity, destruction of soil structure, and decline in content of soil organic matter.

Key words: long-term experiment, chemical fertilizer combined with organic fertilizer application, N and P balance, eco-economic benefit

姚茜1,田昆1,2**,肖德荣2,杨洪昇1,曹萍麟1. 纳帕海湿地植物多样性及土壤有机质对猪拱干扰的响应[J]. 生态学杂志.

YAO Xi1, TIAN Kun1,2**, XIAO De-rong2, YANG Hong-sheng1, CAO Ping-lin1. Response of plant diversity and soil organic mater to pig forage disturbance in Napahai wetland.[J]. cje.