Talang/Lemang bamboo (Schizosrachyum brachycladum) has the lowest INP value, 2.09, which falls into the low category. This indicates that lemang bamboo is not dominant and has little influence on vegetation structure. Talang bamboo has a low frequency value (F), 0.03, which shows that lemang bamboo is very difficult to find. This condition is influenced by its limited utilization, causing the species to be largely eradicated by the community. Bamboo sampling was carried out in five surveyed subdistricts: Kabanjahe, Berastagi, Tigapanah, Juhar, and Tigabinanga, Karo District.

Karo District has ecological characteristics suitable for bamboo growth. Socio-cultural aspects also play a major role in bamboo identification, as many bamboo plots were found near residential areas. This is due to the extensive use of bamboo for various needs, such as fences, baskets, cooking tools, agricultural stakes, chicken coops, and hut poles.

It can be said that bamboo distribution is relatively even across its species, but some species remain dominant. The evenness index functions as a ratio of the diversity index to the number of species found. This means that the more diverse the species, the lower the probability of encountering individuals of each species. The higher the species diversity index, the more stable the ecosystem. The low diversity index in this study is due to the dominance of rope bamboo, which accounted for 80% of the total bamboo clumps found.