Vegetation analysis of Samin watershed, Central Java as water and soil conservation efforts

Abstract

Samin watershed in Central Java is one of 282 Indonesian watersheds which are in critical condition. Nowadays, the sustainability of forest resources in the upstream of Samin watershed is threatened by exploitation of forest by people. As a result, erosion and sedimentation are occurring in this area that may pose a threat of flooding and landslide. Therefore, we need serious measures to maintain the function of Samin watershed, one of which is through the monitoring of vegetation in watershed. The purpose of this research was to analyze the structure and composition of vegetation in Samin watershed to support soil and water conservation. The survey of vegetation was conducted in 3 areas of Samin watershed based on geophysical conditions namely upstream, midstream, and downstream. At each sampling area, 37 sampling plots were randomly distributed in six observation stations. Vegetation analysis was carried out in both the lower crop community (LCC) and the tree. Results showed that the number of LCC species found in the upstream, midstream, and downstream areas were 21, 34, and 28 respectively. The species diversity indexes of LCC vegetation in the upstream, midstream, and downstream areas were 1.04, 1.34, and 1.23 respectively. Based on this result, LCC vegetation in Samin watershed was categorized in medium condition. The number of tree species found in the upstream, midstream, and downstream areas were 27, 18, and 12 respectively. The species diversity indexes of tree vegetation in the upstream, midstream, and downstream areas were 1.31, 1.15, and 0.97 respectively. Based on this result, the tree vegetation in Samin watershed was categorized in medium condition for the upstream and midstream areas, and low condition for the downstream area. Vegetation in Samin watershed must be preserved in order to maintain the sustainability of Samin watershed.

Unraveling genetic variations of Dalbergia latifolia (Fabaceae) from Yogyakarta and Lombok Island, Indonesia

“…Dalbergia latifolia was introduced to Indonesia perhaps during the colonial era, possibly from India, and has been naturalized in several islands of Indonesia (Sunarno 1996;Maridi et al 2014;Arisoesilaningsih and Soejono 2015;Adema et al 2016). The species have been cultivated mainly in agroforestry (Hani and Suryanto 2014;Mulyana et al 2017) and monoculture plantation (Atikah and Dede 2018, unpublished).…”

“…The low-quality pieces are utilized by the domestic market for craft, and often as firewood (Yulita and Susila 2019). This species is found in Java, mostly in East and Central part, West Nusa Tenggara, probably in lands of re-vegetation program conducted separately at different times since 1980 (Djajanti 2006;Maridi et al 2014;Arisoesilaningsih and Soejono 2015).…”

Diversity and biomass of tree species in Tambrauw, West Papua, Indonesia

“…Vegetation analysis is a method to study species composition and structure of a plant community. The method is an important tool in land classification (Damman 1979), conservation management of endangered plants (Cropper 1993) and animals (Deutschlander and Bredenkamp 1999), and conservation management of soil and water (Maridi et al 2014). It also plays a crucial role as a baseline data for helping plant species and community to adapt to future climate change (Palmate et al 2017).…”

Saminist’s Indigenous Knowledge In Water Conservation in North Karts Kendeng Sukolilo

“…Samin community still has a very strong tradition in everyday life. These communities still adhere to the teachings of their ancestors, especially the values that govern relations Samin community with the natural surroundings (Maridi, Agustina and Saputra 2014;Rohman 2010;Widodo 2012). This study gives an addition to the existing literatures on the relevance of indigenous knowledge in the modern world (Ahmad and Prashar 2010;Kurz, T Donaghue and Walker 2005;Kurz, Roberts and Rosen 2009;Ward and Pulido-Velazquez 2008;Williams, Blanco and Lal 2010).…”