FADHLINA, AMILAH PUTRI and Kurniatun Hairiah, Prof. Dr. Ir (2023) REVEGETASI LAHAN ALANG-ALANG DALAM SISTEM AGROFORESTRI. Kandungan COrganik Tanah, Kerapatan, dan Keanaekaragaman Cacing Tanah. Sarjana thesis, Universitas Brawijaya.
Abstract
Lahan alang-alang mulai banyak ditinggalkan petani karena sudah tidak produktif dan tingkat kesuburannya rendah. Upaya restorasi perlu dilakukan untuk meningkatkan ekonomi dan fungsi layanan lingkungan. Cacing tanah merupakan indikator kesuburan tanah karena aktivitas biota cacing tanah dalam sifat fisik diantaranya, pergerakannya dapat memperbaiki struktur, pori, dan drainase tanah. Sedangkan peran biota tanah pada sifat kimia tanah diantaranya dapat memengaruhi ketersediaan unsur hara bagi tanaman dan juga penyerapannya. Tujuan dari penelitian ini untuk mengevaluasi perbedaan kerapatan dan keanekaragaman cacing tanah pada lahan rehabilitasi alang-alang menggunakan sistem agroforestri serta menganalisa tingkat kepadatan cacing tanah dengan ketersediaan C-Organik pada berbagai umur agroforestri pasca revegetasi lahan alang-alang Penelitian ini dilakukan di Kabupaten Solok, Sumatera Barat pada wilayah revegetasi lahan alang-alang dengan sistem agroforestri. Wilayah Penelitian terbagi atas 3 Nagari (Desa), yaitu Nagari Sirukam, Nagari Paninggahan dan Nagari Selayo, Kabupaten Solok. Penelitian dilakukan saat musim hujan bulan Februari – Maret 2023 (rerata cH = 151,9 mm/bulan) . Penelitian ini menggunakan metode survey dengan Sumber Keragaman I (SK I). Penggunaan Lahan; Hutan Alami (HA), Agroforestri berbagai umur setelah restorasi, diantaranya Alang-alang dan pakis (AF0), Agroforestri Muda berumur 1-4 tahun (AF1), Agroforestri Medium berumur 4-6 tahun (AF2), Agroforestri Tua berumur > 7 tahun (AF3) dan Agroforestri Multistrata Tua berumur (AFMT) sebagai agroforestri reference; SK II. Kedalaman tanah; 0-10 cm, 10-20 cm, 20-30 cm dengan 4 kali ulangan. Contoh cacing tanah dilakukan dengan metode Tropical Soils Biology and Fertility (TSBF) Monolith dan pengambilan cacing tanah di lakukan dengan menggunakan tangan (handsorting). Jenis cacing tanah yang ditemukan di berbagai penggunaan di berbagai jenis dan umur agroforestri yang termasuk dalam 2 famili yang terdiri dari 4 spesies Amynthas sp, Pheretima sp, Pheretima sp (2) dan Pontoscolex corethrurus. revegetasi lahan alang-alang agroforestri meningkatkan kepadatan cacing tanah dapat diterima dikarenakan populasi cacing tanah pada lahan revegetasi alang-alang (AF1, AF2, AF3 dan AFMT) memiliki nilai populasi yang semakin tinggi seiring bertambahnya umur (AF1 26,33%, AF2 29,20%, AF3 35%, AFMT 39,7%. Namun, apabila dibedakan berdasarkan jenis tanahnya, maka pada tanah andisol menurunkan populasi cacing tanah (AF0-AF1) mengalami penurunan senlai 125% sedangkan pada tanah Inceptisol mengalami peningkatan senilai 30% (AF-AF3- AFMT). Ketersediaan C-Organik dan umur agroforestri meningkatkan kepadatan dan keanekaragaman cacing tanah. Hal ini menujukkan bahwa semakin tinggi nilai C-Organik maka semakin tinggi pula populasi yang ada di sistem penggunaan lahan tersebut
English Abstract
Many farmers are starting to abandon reed land because it is no longer productive and has low fertility. Restoration efforts need to be carried out to improve the economy and function of environmental services. Earthworms are an indicator of soil fertility because the activity of earthworm biota in its physical properties, including its movement, can improve soil structure, pores and drainage. Meanwhile, the role of soil biota in soil chemical properties can influence the availability of nutrients for plants and also their absorption. The aim of this research is to evaluate differences in the density and diversity of earthworms on reed rehabilitation land using an agroforestry system and to analyze the level of earthworm density with the availability of C-Organic at various ages of agroforestry after revegetation of reed land. This research was conducted in Solok Regency, West Sumatra in the revegetation area of reed land using an agroforestry system. The research area is divided into 3 Nagari (Villages), namely Nagari Sirukam, Nagari Paninggahan and Nagari Selayo, Solok Regency. The research was conducted during the rainy season in February – March 2023 (mean cH = 151.9 mm/month). This research uses a survey method with Diversity Sources I (SK I). Land Use; Natural Forest (HA), Agroforestry of various ages after restoration, including Alang-alang and ferns (AF0), Young Agroforestry aged 1-4 years (AF1), Medium Agroforestry aged 4-6 years (AF2), Old Agroforestry aged > 7 years (AF3) and Old Multistrata Agroforestry (AFMT) as reference agroforestry; SK II. Soil depth; 0-10 cm, 10-20 cm, 20-30 cm with 4 repetitions. Earthworm samples were taken using the Tropical Soils Biology and Fertility (TSBF) Monolith method and earthworm collection was done by hand (handsorting). Types of earthworms found in various uses in various types and ages of agroforestry are included in 2 families consisting of 4 species Amynthas sp, Pheretima sp, Pheretima sp (2) and Pontoscolex corethrurus. Agroforestry revegetation of reed land increases the density of earthworms which is acceptable because the population of earthworms in reed revegetation land (AF1, AF2, AF3 and AFMT) has a population value that increases with age (AF1 26.33%, AF2 29, 20%, AF3 35%, AFMT 39.7%. However, if differentiated based on soil type, in Andisol soils the population of earthworms (AF0-AF1) decreased by 125%, while in Inceptisol soils there was an increase of 30% (AF -AF3-AFMT). The availability of C-Organic and the age of agroforestry increases the density and diversity of earthworms. This shows that the higher the C-Organic value, the higher the population in the land use system.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 052304 |
| Divisions: | Fakultas Pertanian > Agroekoteknologi |
| Depositing User: | Unnamed user with username chikyta |
| Date Deposited: | 10 Jan 2024 07:01 |
| Last Modified: | 10 Jan 2024 07:01 |
| URI: | http://repository.ub.ac.id/id/eprint/207467 |
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