Valuation of cropland capacity classes in Guangdong;

A preliminary study on the land capacity change of twelve returning cultivated land to forest models in Xichong county of southeastern Yunnan was conducted by ocean weather station observation.

The results showed that the land capacity of rendzina is the highest and the land capacity of terra rossa is higher,which resulted by closing hillsides to facilitate afforestation for many years of rendzina,and balance fertilizing of terra rossa.

Using soil types as evaluation units and their yield as a basis, the cultivated land productivity grade system of Shandong Province is estab.

The aim of this paper is to study how to evaluate farmland productivity through the combination of GIS technology with traditional methods of evaluating soil productivity.

Results show that AHP adapt to judge the weight of each evaluation factor and intergraded to quantificational and qualitative in evaluation of farmland productivity.

Linkage of evaluation index system for cultivated land fertility evaluation in plain and hill regions;

Evaluation model of cultivated land fertility using artificial neural network and productivity and its application;

GIS supported quantitative evaluation of cultivated land fertility;