Dekomposisi Serasah Daun Sonneratiacaseolarispada Berbagai Tingkat Salinitas Dikawasan Hutan Mangrove Desa Percut, Kabupaten Deli Serdangprovinsi Sumatera Utara
ABSTRACT
NORIANA ASSAMI HAKIM TAMBUNAN. Decomposition of Sonneratia
caseolaris Leaf Litter at Various Salinity Levels in Mangrove Forest Area at
Percut Village, Deli Serdang Regency, North Sumatra. Under academic
supervised by YUNASFI and BUDI UTOMO.
Mangrove ecosystems can produce litter that decomposes to contribute
organic matter in the waters as a source of feed for various types of organisms.
Salinity can affect the process of water decomposition and release nutrients
needed by organisms located in coastal areas. Therefore, in the mangrove forest
area of Percut village, Deli Serdang regency, North Sumatera province has been
done research conducted in September 2016 - January 2017. The purpose of this
research is to know the nutrient content of carbon (C), nitrogen (N) and
phosphorus (P) on S.caseolaris leaf litter. The research method was carried out by
removing leaf litter which is located on the ground floor which will be dried in the
oven and put the litter bag in the field as many as 21 bags of litter at each level of
salinity with litter picking for 15 days once as much as 3 bags random of litter.
Litter that has been decomposed will be analyzed the content of the nutrient. The
results showed that the leaf litter of S.caseolaris placed at a salinity level of 0-10
ppt decelerated faster. The mean residual weight of S.caseolaris leaf litter that
decomposition at salinity level 0-10 ppt and 11-20 ppt is 14,26 gram and 18,23
gram. Level of nutrient of C elements inS.caseolaris leaf litter at salinity level 010 ppt and 11-20 ppt is 15.75% and 16.62%. The nutrient of N elements of
S.caseolaris leaf litter at salinity level 0-10 ppt and 11-20 ppt were 1.72% and
1.82%. The nutrient of P elements of S.caseolaris leaf litter at salinity level 0-10
ppt and 11-20 ppt were 4.21% and 3.38%.
Kerword: S.caseolaris, decompotition, salinity, leaf litter, element of nutrient
Universitas Sumatera Utara
ABSTRAK
NORIANA ASSAMI HAKIM TAMBUNAN. Dekomposisi Serasah Daun
Sonneratia caseolaris pada Berbagai Tingkat Salinitas di Kawasan Hutan
Mangrove Desa Percut, Kabupaten Deli Serdang Provinsi Sumatera
Utara.Dibawah bimbingan YUNASFI dan BUDI UTOMO.
Ekosistem mangrove dapat memproduksi serasah yang mengalamai
dekomposisi untuk penyumbangan bahan organik di perairan sebagai sumber
pakan bagi berbagai jenis organisme. Salinitas dapat mempengaruhi proses
dekomposisi perairan dan melepaskan unsur hara yang dibutuhkan oleh organisme
yang berada di kawasan pesisir. Untuk itu di kawasan hutan mangrove desa Percut
Kabupaten Deli Serdang Provinsi Sumatera Utara telah dilakukan penelitian pada
September 2016 - Januari 2017.Tujuan penelitian ini dilakukan untuk mengetahui
kandungan unsur hara karbon (C), nitrogen (N) dan fosfor (P) yang terdapat pada
serasah daun S.caseolaris.Metode penelitian dilakukan dengan pengambilan daun
serasah yang berada diatas lantai tanah yang akan di oven dan meletakkan
kantong serasah dilapangan sebanyak 21 kantong serasah di setiap tingkat
salinitas dengan pembambilan serasah selama 15 hari sekali secara acak sebanyak
3 kantong serasah. Serasah yang telah mengalami dekomposisi akan dianalisis
kandungan unsur haranya. Hasil penelitian menunjukkan bahwa serasah daun
S.caseolarisyang ditempatkan pada tingkat salinitas 0-10 ppt lebih cepat
terdekomposisi. Rata-rata bobot sisa serasah daun S.caseolarisyang mengalami
dekomposisi pada tingkat salonitas 0-10 ppt dan 11-20 ppt yaitu 14,26 gram dan
18,23 gram. Kadar unsur hara C serasah daun S.caseolarispada tingkat salinitas 010 ppt dan 11-20 ppt yaitu 15,75% dan 16,62%. Unsur hara N serasah daun
S.caseolarispada tingkat salinitas 0-10 ppt dan 11-20 ppt yaitu 1,72% dan 1,82%.
Unsur hara P serasah daun S.caseolarispada tingkat salinitas 0-10 ppt dan 11-20
ppt yaitu 4,21% dan 3,38%.
Kata kunci: S.caseolaris, dekomposisi, salinitas, serasah, unsur hara
Universitas Sumatera Utara
NORIANA ASSAMI HAKIM TAMBUNAN. Decomposition of Sonneratia
caseolaris Leaf Litter at Various Salinity Levels in Mangrove Forest Area at
Percut Village, Deli Serdang Regency, North Sumatra. Under academic
supervised by YUNASFI and BUDI UTOMO.
Mangrove ecosystems can produce litter that decomposes to contribute
organic matter in the waters as a source of feed for various types of organisms.
Salinity can affect the process of water decomposition and release nutrients
needed by organisms located in coastal areas. Therefore, in the mangrove forest
area of Percut village, Deli Serdang regency, North Sumatera province has been
done research conducted in September 2016 - January 2017. The purpose of this
research is to know the nutrient content of carbon (C), nitrogen (N) and
phosphorus (P) on S.caseolaris leaf litter. The research method was carried out by
removing leaf litter which is located on the ground floor which will be dried in the
oven and put the litter bag in the field as many as 21 bags of litter at each level of
salinity with litter picking for 15 days once as much as 3 bags random of litter.
Litter that has been decomposed will be analyzed the content of the nutrient. The
results showed that the leaf litter of S.caseolaris placed at a salinity level of 0-10
ppt decelerated faster. The mean residual weight of S.caseolaris leaf litter that
decomposition at salinity level 0-10 ppt and 11-20 ppt is 14,26 gram and 18,23
gram. Level of nutrient of C elements inS.caseolaris leaf litter at salinity level 010 ppt and 11-20 ppt is 15.75% and 16.62%. The nutrient of N elements of
S.caseolaris leaf litter at salinity level 0-10 ppt and 11-20 ppt were 1.72% and
1.82%. The nutrient of P elements of S.caseolaris leaf litter at salinity level 0-10
ppt and 11-20 ppt were 4.21% and 3.38%.
Kerword: S.caseolaris, decompotition, salinity, leaf litter, element of nutrient
Universitas Sumatera Utara
ABSTRAK
NORIANA ASSAMI HAKIM TAMBUNAN. Dekomposisi Serasah Daun
Sonneratia caseolaris pada Berbagai Tingkat Salinitas di Kawasan Hutan
Mangrove Desa Percut, Kabupaten Deli Serdang Provinsi Sumatera
Utara.Dibawah bimbingan YUNASFI dan BUDI UTOMO.
Ekosistem mangrove dapat memproduksi serasah yang mengalamai
dekomposisi untuk penyumbangan bahan organik di perairan sebagai sumber
pakan bagi berbagai jenis organisme. Salinitas dapat mempengaruhi proses
dekomposisi perairan dan melepaskan unsur hara yang dibutuhkan oleh organisme
yang berada di kawasan pesisir. Untuk itu di kawasan hutan mangrove desa Percut
Kabupaten Deli Serdang Provinsi Sumatera Utara telah dilakukan penelitian pada
September 2016 - Januari 2017.Tujuan penelitian ini dilakukan untuk mengetahui
kandungan unsur hara karbon (C), nitrogen (N) dan fosfor (P) yang terdapat pada
serasah daun S.caseolaris.Metode penelitian dilakukan dengan pengambilan daun
serasah yang berada diatas lantai tanah yang akan di oven dan meletakkan
kantong serasah dilapangan sebanyak 21 kantong serasah di setiap tingkat
salinitas dengan pembambilan serasah selama 15 hari sekali secara acak sebanyak
3 kantong serasah. Serasah yang telah mengalami dekomposisi akan dianalisis
kandungan unsur haranya. Hasil penelitian menunjukkan bahwa serasah daun
S.caseolarisyang ditempatkan pada tingkat salinitas 0-10 ppt lebih cepat
terdekomposisi. Rata-rata bobot sisa serasah daun S.caseolarisyang mengalami
dekomposisi pada tingkat salonitas 0-10 ppt dan 11-20 ppt yaitu 14,26 gram dan
18,23 gram. Kadar unsur hara C serasah daun S.caseolarispada tingkat salinitas 010 ppt dan 11-20 ppt yaitu 15,75% dan 16,62%. Unsur hara N serasah daun
S.caseolarispada tingkat salinitas 0-10 ppt dan 11-20 ppt yaitu 1,72% dan 1,82%.
Unsur hara P serasah daun S.caseolarispada tingkat salinitas 0-10 ppt dan 11-20
ppt yaitu 4,21% dan 3,38%.
Kata kunci: S.caseolaris, dekomposisi, salinitas, serasah, unsur hara
Universitas Sumatera Utara