CD Tesis

Keanekaragaman Makrofauna Tanah Pada Beberapa Tipe Tutupan Lahan Di Khdtk Hutan Diklat Bukit Suligi Kabupaten Rokan Hulu

---

Soil macrofauna measuring > 2 mm consists of milliapoda, isopods, insects, molluscs and earthworms (Maftu'ah et al., 2005). Soil macrofauna has an important role in the decomposition of soil organic matter in the provision of nutrients. Macrofauna will crumble dead vegetable matter, then the material will be excreted in the form of feces. The presence of soil macro, meso and microfauna has a role in nutrient status, soil structure and processes that occur in the soil, increasing aeration, increasing water infiltration, improving soil aggregation, distributing soil organic matter, increasing weathering and decomposition of organic matter, maintaining and increasing the function of the soil to support life in it, an indicator of soil quality with a relatively abundant amount of soil fauna. Changes in the function of forest land to agroforestry can change soil fertility conditions, but agroforestry is considered capable of maintaining soil macrofauna biodiversity. Land use change, such as changes from forest land to agriculture is known to affect the diversity of soil macrofauna.
Determining the location of the soil sampling method Purposive Sampling. To determine sample points on complex agroforestry, rubber-gaharu agroforestry, rubber monoculture, and secondary forest, sample plots measuring 20 x 20 m were made with four replicates (4 plots) on each land using the transect method. set 4 sampling points by trasect. The number of soil samples taken from each plot was 7 soil samples, so a total of 28 soil samples. Sampling of soil macrofauna at the soil surface was carried out using the pitfall trap method, setting barber traps in the form of a 500 ml cup filled with 4% formalin plus detergent. Sampling of soil macrofauna in the soil was carried out using the hand sorting method, making quadrants measuring 25 cm x 25 cm and digging 20 cm deep inside the quadrants. in that land. The results showed that secondary forest land cover produced a higher number of macrofauna, macrofauna population density, using the handssorting and pitfalltrap methods compared to complex agroforestry land cover, rubber-gaharu agroforestry and rubber monoculture. The highest to lowest population densities of soil macrofauna were in secondary forest, namely, complex agroforestry, rubber monoculture and rubber-gaharu agroforestry. The percentage of relative density of handssorted soil macrofauna was highest to lowest in several land cover types, namely in secondary forest, namely the Lumbricidae family, complex agroforestry, namely the Lumbricidae family, rubber-gaharu agroforestry, namely the Formicidae family, and the lowest was in rubber monoculture, namely the Lumbricidae family. The highest to lowest percentage relative density of pitfalltrap soil macrofauna was in several types of land cover, namely in secondary forest, namely the Formicidae family, complex agroforestry, namely the Gryllidae family, rubber-gaharu agroforestry, namely the Formicidae family, and the lowest was in rubber monoculture, namely the Gryllidae family. The diversity index of soil macrofauna using the handsorting
xvi
method on secondary forest land cover, complex agroforestry and rubber-gaharu agroforestry was in the medium category, but in rubber monoculture it had a low category diversity index value. Diversity index of soil macrofauna using the Pitfalltrap method on land cover secondary forest, complex agroforestry and rubber-gaharu agroforestry and rubber monoculture was in the middle category.
The conclusions from the results of the study, namely, population density, relative density, number of individuals and index of diversity and abundance of soil macrofauna in secondary forest were higher than complex agroforestry, gaharu rubber agroforestry, and rubber monoculture. In secondary forest, 9 absolute families were obtained, namely, Anisolabididae, Ceratopogonidae, Formicidae, Gryllidae, Julidae, Lumbricidae, Mycetophilidae, Salticidae and Scarabaeidae, rubber monoculture obtained 4 absolute families, namely, Lumbricidae, Gryllidae, Salticidae and Trachelidae, in rubber - gaharu agroforestry there were 6 absolute families, namely Anisolabididae, Blattidae, Formicidae, Gryllidae, Julidae and Lumbricidae. Whereas in complex agroforestry there are 6 absolute families, namely Acrididae, Formicidae, Gryllidae, Lumbricidae, Lycosidae and Philosciidae.
Key Words : Land Cover, Diversity, Abundance, Macrofauna.

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

2010247619

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Ilmu Pertanian., 2023

Deskripsi Fisik

-

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

2010247619

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

ILMU PERTANIAN

Info Detail Spesifik

-

Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar