Status of bamboo resources in Shengzhou and inquiry into model of their development and utilization.

The spatial distribution patterns of Sinorsillus piliferus nymphae and optimum sampling number were studied by 4 methods of convergence index (b), speading coeffience (c), Iwao test and David and moors's convergence index. The resuts showed that, its distribution type was aggregative in different stands and populations Nymphae's aggregation was caused by environment.