Perbandingan Sifat Kimia dan Biologi Tanah Akibat Keterbukaan Lahan Pada Hutan Reboisasi Pinus di Kecamatan Pollung Kabupaten Humbang Hasundutan Sumatera Utara

ABSTRACT: Forest clearing activity has been caused land openness in some forest areas such as reforested forest. Land openness could  cause  the  decreasing  of  fertility  value  of  forest  soil.  The  objective  of  this  research  was  to  comparing  of  soil’s chemical and biological characteristics in open area with pine forest in pine reforested forest in Pollung sub-district of Humbang  Hasundutan  district,  North  Sumatera.  This  research  was  using  secondary  data  of  soil’s  chemical  and biological characteristics analysis results from Team of Living Environmental Ministry 2010. Descriptively, this research has  shown  that  land  openness  has  caused  lower  comparison  of  all  average  value  of  soil’s  chemical  and  biological parameters.  Highest  percentage  of  comparison  difference  in  open  area  was  total  of  C-organic  content that  amounted 59.90%  and  total  of  soil  fungi  that  amounted  94.18  %  lower  than  pine forests.  Degradation  of  soil’s  chemical  and biological  values  was  caused  by  the  decreasing  of total  organic  content  of  soil  and  nutrient  washing  by  rain  water. Considering to negative impact that will be caused thus needed an effort of soil resiliency through land rehabilitation by whitewashing of acid soil and re-vegetation.
Keywords: soil degradation, pine forest, open area, soil’s chemical characteristic, soil’s biological characteristic.
Penulis: Basuki Wasis, Yadi Setiadi dan Mohamad Eko Purwanto
Kode Jurnal: jpbiologidd120001

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