蜀南竹海毛竹林土壤生物肥力质量指标与评价  

Indexes and Assessment of Soil Biological Fertility Quality of Phyllostachys edulis Forest in Southern Sichuan Bamboo Sea

作　　者：刘丽[1] 罗承德[1] 雷波[1,2] 马丹[1] 代斌[1] 高强伟[1] 

机构地区：[1]四川农业大学林学院,四川雅安625014 [2]四川省广安市广安区水务局,四川广安638000

出　　处：《土壤》2015年第3期543-549,共7页Soils

基　　金：四川省科技支撑项目(2012ZZ0037)资助

摘　　要：土壤生物肥力处于土壤肥力的中枢和核心地位。以蜀南竹海核心景区毛竹林土壤为研究对象，选择土壤生物因子为评价指标，采用经典统计学和地统计学方法分析因子的空间分布特性以及土壤呼吸的整体水平。在此基础上应用模糊数学与主成分分析法，建立土壤生物肥力指数模型，综合评价该区土壤生物肥力质量。结果表明：研究区土壤各项生物肥力指标属中度到强度变异，变程范围1326～2219m，在其变程内，各指标具有强烈的空间相关性；研究区土壤呼吸速率平均为3．38runol／（m^2·s），林地干扰较严重；在划分的5个生物肥力等级中，三、四两级所占面积最大，达到总面积的65．01％，一级与五级区域所占面积较小，均不足10％，土壤生物肥力质量总体处于中等水平。The biological fertility is in central and core position of soil fertility. Soil of Phyllostachys edulis forest in core scenic spot within the south Sichuan bamboo sea was taken as the object and soil biological factors were selected as the evaluation indexes. The spatial heterogeneity of the factors and the whole level of soil respiration rate were analyzed through both geo-statistical and traditional statistical methods. On this basis, an index model of soil biological fertility was carded out with principal component analysis and fuzzy mathematics to evaluate the quality of soil biological fertility in this area. The results showed that the variability of all biological fertility indexes ranged from moderate to intense, and the ranges were 1 326-2 219 m. Each index showed a strong spatial correlation in its range. The mean rate of soil respiration in study area being 3.38 μmol/（m^2·s） reflected that the interference of this forest land was serious. In the five divided biological fertility grades, the third and forth have the highest percentage in size, covering 65.01% of the whole area, while both the first and fifth less than 10%. In general, the quality of soil biological fertility in the study area was in middle level.

关 键 词：地统计学 空间变异 土壤生物肥力质量评价 土壤酶 土壤微生物生物量 土壤呼吸 

分 类 号：S158.2[农业科学—土壤学] Q143[农业科学—农业基础科学]