《旱地农田黑土健康评价方法》编制说明

（2）数据分析和验证阶段：在以上研究开展的同时，团队成员对国内外土壤健康和耕地质量评价相关的方法体系和行业标准进行1.实地调研：依托中国科学院先导A项目之“黑土地健2.充分的资料收集和方法比对：团队成员需查阅国内外有关土壤健康评价理论框架—康奈尔土壤健康评价体系（Comprehensive熵、土壤酶活性(β-葡萄糖苷酶活性、磷酸酶活性、脲酶活性、固由于样本量较大和备先指标较多，首先选择了108区域和不同土壤类型的样本进行46项指标的分析测定，通过主成分微生物氮（MBN）、微生物量碳氮比（MBC/MBN）、呼吸速率荷绝对值≥0.5的指标。计算各指标在全部主成分的综合载荷（Uik表示第i个变量在第k个主成分上的载荷；λk是第k和主成分的表2.对345个土壤样品32项数据集指标的主成份分析ParameterNorm0.84-0.29-0.15-0.070.19-0.140.090.00-0.232.300.340.50-0.610.190.25-0.040.10-0.02-0.07SOC0.590.760.30-0.250.210.03-0.21-0.09-0.022.36TN0.150.540.39-0.120.150.110.04-0.01-0.07C/N0.74-0.07-0.03-0.210.16-0.09-0.38-0.140.062.01MBC0.250.160.360.210.11-0.560.02-0.030.45MBN0.400.41-0.41-0.050.04-0.30-0.04-0.150.25MBC/MBN-0.35-0.270.600.22-0.03-0.180.070.290.35DOC0.480.29-0.46-0.32-0.120.07-0.190.09-0.04DON-0.300.66-0.53***0.270.080.060.160.060.06NH4+-0.220.42-0.500.140.09-0.070.070.290.29NO3--0.330.62-0.51***0.270.030.020.190.000.02PNR0.520.170.130.200.41-0.110.420.09-0.27Nitrogenase0.32-0.060.300.040.360.100.080.58-0.04Resp0.54-0.02-0.01-0.310.080.50***0.080.300.28qCO20.36-0.02-0.11-0.370.030.710.060.300.09DEA0.070.200.110.020.44-0.250.040.180.300.99Phosphatase-0.470.480.400.050.020.30-0.18-0.160.21Glucosidase-0.060.600.340.170.180.230.12-0.25-0.15Urease0.600.23-0.07-0.300.13-0.11-0.48-0.170.15CEC-0.150.620.460.040.130.170.060.05-0.12-0.230.02-0.01-0.70-0.20-0.020.50-0.220.17WHC0.05-0.16-0.020.67***0.220.04-0.490.23-0.19Clay0.050.10-0.29-0.04-0.51-0.31-0.020.46-0.12Silt0.060.600.34-0.20-0.49-0.17-0.120.19-0.13Sand-0.07-0.57-0.230.190.590.240.11-0.290.15Bacterial_chao10.84***-0.150.030.16-0.21-0.040.23-0.020.022.23Bacterial_shannon0.78***-0.290.13-0.03-0.04-0.150.270.030.082.14Fungal_chao10.620.240.090.44-0.440.110.09-0.160.07Fungal_shannon0.590.140.260.16-0.05-0.170.26-0.12-0.18Protist_chao10.510.040.010.49-0.420.35-0.03-0.070.27Protist_shannonEigenvalue0.43-0.150.040.49-0.340.340.02-0.110.106.524.583.392.672.272.00Variation0.200.140.110.080.070.060.050.040.04Cumulative0.200.350.450.540.610.670.720.760.80variation全部测定数据的高斯分布参数（平均值和标准差以得到其累积概进一步依据文献和康奈尔土壤健康评价方法体系确定每个指标的评分函数类型型，即“越多越好型”、“越少越好型”或“中间最优型”值(EC)<200us.cm-1(EC)>200us.cm-1值soilhealthindex=Σ(scoreBD+scorewHC+scoreClay+scoresand+scoreEC+scorepH+scoresoC+scoreMBC+scoreResp+scoreqCo2)态分布（-0.5<偏度<0.5平均为51分，标准差为11。对不同土壤类型进行的层次聚类分析结果显示，15个土壤类型被聚育过程的重要因素—气候和土壤母质是影响旱地农田黑土自然健康康指数0-1010-2020-3030-4040-5050-6060-7070-8080-9090-100等级十级九级八级七级六级五级三级二级一级（2）土壤健康指标栏：包括测定的土壤健康指标的名称、土壤（3）土壤健康状况综合评价栏：包括土壤健康总分和土壤健康坡度2°容重(g/cm³)08 员培训和应用成本，适合在农业科研、技术推广性强，便于农田管理者因地制宜制定土壤健康保育无