摘要
土壤健康是土壤质量的可变部分,受人类利用和管理土壤方式的影响明显。因此,掌握农田土壤健康状况,对改进农田管理方式、提高农作物产量和质量具有重要意义。康奈尔土壤健康评价系统通过研究土壤健康指标,科学全面的评价农田土壤的健康状况。该系统从39个备选的土壤健康指标中选取物理指标、生物指标和化学指标各4个,作为描述土壤健康特征的量化指标;在采样分析获得各指标的指标值后,通过土壤健康评分函数,将测得的指标值转换为对应指标的分值,并在此基础上计算出土壤健康总分,用以定量评价农田土壤的综合健康状况。该测试系统面向农民、为农民服务,操作简单、易于理解,对我国开展农田土壤健康管理和评价工作具有参考价值。
Soil health is the dynamic part of soil quality, which is significantly affected by human utilization and managementmodes. Therefore, understanding soil health status is significant for improving soil management and enhancing crop production and quality. The Cornell Soil Health Assessment(CSHA) expresses soil health scientifically and comprehensively by analyzing the selected soil health indicators. For this purpose, twelve soil health indicators,including four physical indicators, four biological indicators and four chemical indicators, are selected from the examined thirty-nine candidate indicators. After the determination of each soil health indicator, the indicator value is transferred to indicator score from corresponding scoring function. Then, the overall soil health score can be calculated from the indicator scores to express the integrative soil health quantitatively. The CSHA is oriented to and serves farmers, and is with the properties as easy operating and understanding. The theories and methods behind CSHA are valuable for the management and assessment on agricultural soil in our country.
出处
《土壤通报》
CAS
CSCD
北大核心
2014年第6期1289-1296,共8页
Chinese Journal of Soil Science
基金
国家自然科学基金(51109017)
湖南省自然科学基金(13JJ3069)
水资源与水电工程科学国家重点实验室开放基金(2012B097)资助
