中国土地承载力计算方法研究综述

土地承载力是土地资源评价的重要指标。回顾总结了我国土地承载力计算方法研究进展,将目前的土地承载力的计算方法分为三类:根据环境因子潜力结构计算土地生产潜力的方法(包括环境因子逐段订正模型和气候因子综合模型)、根据植被潜力结构计算土地生产潜力的方法和系统动力学方法,并讨论了各类方法的使用范围、优点及局限性。最后对土地承载力研究领域的发展方向作了简要评述。

REVIEW OF LAND CARRYING CAPACITY CALCULATING METHODS CHINA

Land carrying capacity is an important indicator on the assessment of land resources. The authors reviewed the progress in study on land carrying capacity calculating methods. The land carrying capacity calculating methods are classified into three categories, including environmental element potentiality method(environmental element step up method and integrated climatic element model method), vegetation potentiality method and systematic dynamics method. Their applying scope, advantage, limits and future prospects are also discussed, of which the first method is used frequently in many literatures and have formed some fixed models, but these models all have their definite applying scope; the second method, that is to get the growing information of crops by means of the remote sense(RS) and estimate the land productivity, its advantage is to get the necessary information quickly and exactly and do dynamic estimate, but in order to the exactness we should build the integrated model combining RS and non RS information; the applying of systematic dynamics method can compute the population carrying capacity of an area dynamically, which is what other methods can't provide. In a word, the new technique such as remote sense(RS) and geographical information system(GIS) will apply to the research area of land carrying capacity.