Study on the soil hydro-structure function of restored vegetations in the Yunnan Shilin park of China

Based on the requirement of ecosystem function assessment of restored vegetations in karst area, the soil hydro-structures function of restored vegetations were evaluated by the soil hydro-structure function model in the famous Shilin park in Yunnan province of China, which is a part of south China karst world natural heritage. Six vegetation sample plots, which form a succession of restored vegetations in the karst area ,including original forest (forest of Cyclobalanopsis glaucoides), 26 years secondary forest B (secondary forest of Cyclobalanopsis glaucoides), 21 years secondary forest A (secondary forest of Neolitsea homilantha) , 8 years brush, rock-desertification bushy grasses and 30 years secondary forest of Pinus yunanesnis, were chosen for assessment. As contrasted with the original forest, 31% of soil hydro-structure function can be restored after ecology recover and blockading administer for 8 years, and 45% can be restored after 21 years of ecology recovery in rocky desertification plots. And only 38% in secondary forest of Pinus yunnanensis can be restored after 30 years of ecology recovery, while 71% of soil hydro-structure function can recover after 26 years of eco-closing .The model of soil hydro-structure function is basically suitable for evaluation of restored vegetations in karst areas.