The purpose of the study was to analyze the prospects for plant conservation in high conservation value (HCV) oil palm plantations based on the sustainability value of plant species and population structure. The study was conducted in the HCV areas of three oil palm plantation companies and secondary forest in Riau Province. Data was collected by analyzing vegetation measuring 1.28-2.56 ha/plot in the HCV area and 3.84 ha/plot in secondary forest. Data analysis was carried out using relative density, and analysis of regeneration conditions were included in five categories (good, poor, fair, none, new). Data analysis related to the assessment of the prospect of HCV areas is carried out from the results of the analysis of the effectiveness of the HCV area and plant sustainability. The HCV area prospect assessment is grouped into three categories, namely prospective, moderately prospective, and not yet prospective. The results showed that the HCV area was not yet effective and the condition of important plant species was not sustainable. The HCV area has not been effectively assessed from the comparison of the value of the vegetation community between the HCV area and secondary forest, including low (<25%). PT A's HCV area in the form of forest has a higher effectiveness value than other HCV areas and secondary forest. The results showed that the most important plant species regeneration conditions were included in the none category (57.14%). This category shows that plant species are not yet sustainable because they are only found at one growth level, namely trees. So now it can be concluded that the purpose of the existence of HCV areas in maintaining and conserving plant diversity in oil palm plantations has not been implemented properly. Key words: Conservation of plants , High conservation value, Oil palm plantations, Vegetation analysis
Oil palm expansion that occurred in Indonesia become the concern today. The expansion of oil palm plantations is a major contribution to the national economy. However oil palm plantations is claimed as the cause of the destruction of primary forests and reduce the diversity of plant species. Therefore, research is needed to explore the history of land cover of oil palm plantations and knowing the divers ity of plant species before and after the oil palm plantations. The study was conducted in March-April 2016 in 6 companies in Riau province. The data collected by the analysis of Landsat imagery to see the condition of land cover prior to their oil palm plantations. In addition, analysis of vegetation in 2-3 plots on land cover before and after the oil palm plantations. The land cover were observed after the oil palm plantations that HCV suspected area as an area that has a high diversity of plant species in oil palm plantations. Analysis of landsat satelite indicated that the history of land cover oil palm plantations is come from secondary forest (19.88%), rubber plantations (59.26%), open land (19.87%), and mixed agriculture (0.99%). The highest diversity of plant that is in HCV which forest areas form . The results showed that the number of plant species was decreased about 60.56-93.33% in the three companies, while the other three companies does not have change the number of plant species. The company did not change the diversity of plant species are those with HCV area in the form of secondary forest that had existed before the oil palm plantations. Thus, there was no history of land cover palm oil from primary forests, and then to the impact of oil palm plantations on plant species diversity was decreased significantly.
Hutan Kemasyarakatan (HKm) adalah hutan negara yang pemanfaatan utamanya ditujukan untuk memberdayakan masyarakat di dalam dan sekitar kawasan hutan. Penelitian ini bertujuan untuk mengetahui pengelolaan berupa komposisi tanaman serta sistem agroforestri yang berada dikawasan hutan yang dikelola oleh kelompok HKm Gapoktan Mertesari di wilayah Desa Senggigi, Kecamatan Batu Layar. Metode yang digunakan adalah survei lahan dan wawancara terhadap kelompok Gapoktan Mertesari dengan pengambilan responden menggunakan metode random sampling. Analisis data yang digunakan adalah analisis deskriptif. Hasil penelitian menunjukkan bahwa Komposisi tanaman yang berada dikawasan hutan yang dikelola oleh kelompok HKm Gapoktan Mertesari terdiri dari jenis kayu lokal seperti Ajan/Klicung, Rajumas, Klokos, Gaharu, Majagau yang tumbuh secara alami. Selain itu, untuk memperkaya keanekaragaman jenis tanaman dengan jenis tanaman kayu-kayuan seperti Sengon, Mahoni dan MPTs seperti Nangka, Mente dan Asam dengan prosentase tumbuh mencapai 80%. Pola agroforestry pada kawasan tersebut adalah multiple croping tanpa ada jarak tanam karena tanaman kehutanannya sudah rapat.
Potensi keanekaragaman hayati Satwa liar (Mamalia dan Reptil) di Taman Wisata Alam (TWA) Kerandangan merupakan potensi yang bersifat komplek dan harus dilestarikan oleh karena itu Fokus penelitian ini adalah untuk mengkaji jenis satwa, indeks keanekaragaman jenis satwa liar mamalia dan reptil, serta Bagaimana kepadatan satwa mamalia dan reptil di Kawasan Hutan TWA Kerandangan. Dalam Karya Tulis ilmiah ini menggunakan Metode kajian pustaka dan Studi Lapangan dan teknik analisis data berdasarkan perbandingan indeks Dominansi. Penulis dapat menyimpulkan bahwa Kelompok mamalia (Lutung Trachypithecus auratus, famili Cercopithecidae yang di temukan dari ke 3 jalur seperti Monyet abu- abu Macaca Fascicularis, Tikus pohon ,Rattus tiomanicus, Dan Musang, Paradoxurus, Kelompok reptil (Ular ada dua jenis ular di temukan yaitu jenis Sibynophis dan Trimerusus insularis , Tokek Gekko Gecko, Kadal Lacetillia , Dan Biawak air dan biawak pohon Varanus Salvator dan Varanus Macraei dan Indeks keanekaragaman jenis pada jalur 1=1,641 yaitu kategori sedang ,pada jalur 2 =1,431 kategori sedang dan pada jalur 3 =1,267 kategori sedang Kepadatan satwa dari ke 3 jalur mamalia dan reptil adalah 2,431.
Kayu putih (Melaleuca cajuputi) merupakan jenis dari famili Myrtaceae yang mengandung minyak atsiri berpotensi mendukung industry minyak atsiri dan juga digunakan untuk kegiatan rehabilitasi lahan. Tujuan dari penelitian ini untuk mengetahui pengaruh media tanam terhadap pertumbuhan bibit tanaman kayu putih. Metode yang digunakan dalam penelitian ini yaitu metode eksperimental menggunakan rancangan acak lengkap (RAL) yang terdiri dari 1 faktor perlakuan yaitu media tanam (M) yang terdiri dari 5 aras (tanah, tanah:pasir (2:1), tanah:pasir (1:2), Tanah : Pasir Zeolit Mikoriza (1/10%), dan tanah:kompos (1:1) ) dengan masing-masing tiga pengulangan. Parameter pertumbuhan yang diamati yaitu tinggi tanaman, jumlah daun, diameter batang, dan panjang akar. Analisis data menggunakan uji anova pada taraf uji 0,05. Jika terdapat perbedaan yang nyata, maka dilakukan uji lanjutan BNJ. Hasil yang diperoleh dari penelitian ini yaitu media tanam memberikan pengaruh nyata kepada parameter pertumbuhan jumlah daun, sedangkan pertumbuhan tinggi tanaman, diameter batang dan panjang akar tidak memberikan pengaruh yang nyata terhadap parameter perlakuan. Media tanam M3 (tanah + pasir Zeolit Mikoriza 1/10%) memberikan pengaruh lebih baik dibandingkan dengan media lainnya pada parameter tinggi tanaman dan jumlah daun. Hasil uji Anova menyatakan media tanam tidak berpengaruh signifikan terhadap tinggi tanaman dan panjang akar. Sedangkan pada jumlah daun memberikan hasil berpengaruh signifikan pada minggu keenam.
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