西南林业大学学报2017，Vol.37Issue(5)：114-121,8.DOI:10.11929/j.issn.2095-1914.2017.05.017
西北荒漠区孑遗植物裸果木居群的土壤养分特征研究
Soil Nutrient Index Characteristics of Relict Plant Gymnocarpos przewalskii Population in Desert Area of Northwest China
摘要
Abstract
Gymnocarpos przewalskii was the experimental material which was a kind of relict plant that collected from 16 populations of soil in main distribution area. Main chemical indexes of different soils and the rela-tionship between environmental factors were analyzed. The soil fertility and soil fertility of different populations were discussed. The results showed that:The variability of soil chemical indexes of different population were different a-mong different regions, and the variation of water content was the largest, and the variation of total phosphorus was the lowest. There were significant differences in the chemical indexes in the population of G. przewalskii in different regions. There were no significant differences in the vertical distribution of soil chemical indexes. There was a signif-icant positive correlation between soil water content and available potassium and total nitrogen and total potassium,but significant negative correlation with soil pH value. The comprehensive soil fertility in Xinjiang is generally higher than in Gansu. Soil fertility at different levels was highest in topsoil, lower in 20-40 cm range. The effects of longitude, altitude and precipitation on the main chemical index were low. The relative temperature index showed highly significant or significant negative correlation with some chemical indicators in the soil, which indicated that the temperature had an effect on the change of these indexes.关键词
中国西北荒漠区/裸果木居群/土壤化学指标/土壤综合肥力Key words
desert area in northwest China/Gymnocarpos przewalskii population/soil chemical index/soil comprehensive fertility分类
农业科技引用本文复制引用
周禧琳,柴学平,梁继业,杨赵平,文伟..西北荒漠区孑遗植物裸果木居群的土壤养分特征研究[J].西南林业大学学报,2017,37(5):114-121,8.基金项目
国家自然科学基金项目 (31360097) 资助 （31360097）
国家科技支撑计划课题 (2014BAC14B04) 资助 （2014BAC14B04）
新疆生产建设兵团塔里木盆地生物资源保护利用重点实验室开放课题 (BRYB1204) 资助 （BRYB1204）
兵团科技攻关计划课题 (2014BA035) 资助. （2014BA035）
