Changes of soil active organic carbon pool under different land use types;

Soil active organic matter is the main source of soil nutrients,and plays an important role in the formation and stabilization of soil aggregate.

A comparative study was made on the soil active organic matter in a broadleaved forest and two Chinese fir(Cunninghamia lanceolata)plantations in subtropical region of China,aimed to understand the effects of forest conversion and continuous plantation on soil organic C and nutrient status.

Reponses of soil labile organic carbon to different harvest methods and land use patterns after cutting were measured in Maoershan Experimental Forest Farm of northeast forestry university.

The results suggests that after partial cut with greater intensity in short-term,the amount of soil labile organic carbon will increase,but after forestation following clear cutting it will decrease in the temperate second growth of northeast China.

All of the above illuminated that short-term no-tillage could bring distinct changes of active soil organic carbon; Moreover (qCO2) and CPMI could indicate the changes of soil organic carbon pool more sensitively than other indices, which could be used as the important indicators for evaluating soil quality.

The research focused on active soil organic carbon(ASOC) in the processes of rocky desertification.

Comparison of active soil organic carbon pool between Chinese fir plantations and evergreen broadleaved forests.;