RDEP 2: Program on Sustainable Upland and Coastal Area Development CY 2012

  • Sub-program 1: Program on Bamboo, Rattan, Medicinal Plants and Other Economically Important Species for Livelihood and Ecological Stability

                        ♦ Study 1: Survey of Bamboo Stands and Establishment of a Regional Database of Economically Important Bamboo Species in the CALABARZON Region.

                                      - The project started last 2011 and expected to be completed by year 2013. It aims to generate data on the species distribution of four economically important species of bamboo in the selected areas for this year, namely: Kawayang Tinik (Bambusa blumeana), Bolo (Gigantichloa levis), Giant Bamboo (Dendrocalamus asper) and Buho (Schizostachyum lumampao). Data gathering involves the utilization of relatively new technologies such as Geographical Positioning System (GPS), Remote Sensing using satellite imageries, and Geographic Information System (GIS).

Survey Results For CY 2012, the province of Batangas and Quezon were selected for the survey of bamboo stands project. As one of the initial activities, coordination with PENR and CENR Officers and LGUs of Batangas and Quezon was conducted. A total of eleven (11) cities/municipalities in Batangas and twenty-eight (28) cities/municipalities in Quezon were identified as sampling areas for the survey. During the year, a total of two hundred forty (240) bamboo stands were surveyed in the province of Batangas. Eighty-one percent (81%) of the samples identified were Bambusa blumeana (Kawayan Tinik) which covers 11.2692 has. The remaining 19% were composed of nine (9) different species which were not part of the t a r g e t p r io r i t y species. The ninety seven (97) samples of Bambusa blumeana amounted to 2,044 stands and 65,408 culms in 11.27 hectares of land. Other bamboo species produced 965 clumps and 30,970 culms in 2.8913 hectares of land. (see Tables E -1 and E-2 showing the summaries of surveyed bamboo species in the Province of Batangas.

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⇒ Bamboo Mapping using Geographic Information System (GIS) and Remote Sensing Technology First quarter results were used to test the possibility o f u s i n g r e m o t e s e n s i n g technology in i d e n t i f y i n g / classifying and isolating areas covered by b a m b o o stands from o t h e r v e g e t a t i v e forms as seen from a satellite image. An infrared satellite image of the Province of Batangas, taken by the AVNIR-2 satellite, was re-classified for preliminary testing. Four samples from the sixty stands were used in classifying bamboo from the image. The remaining samples were later overlaid on the resulting image to determine its accuracy. Figure E-1 shows part of the semi-processed image and the overlaid samples. Sixty (60) samples taken from the CENRO Batangas City area on Detailed Accomplishments and/or Milestones Table E-2 Summary of Total Stands, Area, Clumps, Culms of Priority Bamboo Within Batangas, CY 2012 Species No. of Stands Total No. Clumps Ave. No. Culms Area (has.) Kawayan Kiling 8 541 30.50 1.0836 Taywanak-Laguna 3 188 25.67 0.3081 Taywanak-Tuy 4 68 39.45 0.3951 Kulatay/Kulatayin 5 40 13.51 0.2069 Arrow bamboo 2 33 35.90 0.3550 Kawayan Tsina 0 1 17.00 0.0006 Black bamboo 0 2 31.50 0.0020 Kawayan Baging 1 71 55.40 0.5350 Usiw 0 21 58.20 0.0050 Total 23 965 30970 2.8913 CY 2012 Annual Report - DENR CALABARZON Region 152 the second quarter were later added to the processing of the re-classified satellite image. The image was then t r a n s f e r r e d t o Manifold System 8, a GIS program, to convert the bamboo areas into shape files. Figure E-2 shows the bamboo stands overlaid on a base map (San Nicolas, Batangas) after processing using Manifold System 8. Based on the shape file, stands of Bambusa blumeana cover 38.43 hectares of the Municipality of San Nicolas’ land area. This would amount to approximately 6,000 clumps and 357,000 culms on the municipality alone. The re-classified image of the Province of Batangas was divided into municipalities prior to shape file conversion due to hardware limitations. The process of converting the whole provincial image into shape files require large amounts of memory, which the available hardware could not meet. Thus, the need for localizing area coverage and painstakingly convert the resulting municipal images into shape files. These results, however, need ground verification to identify errors generated from the processing. Errors were inevitable due to limitations in resources. Higher resolution satellite images were needed to achieve results of high accuracy. Computers with higher specifications should be acquired to meet the requirements of the software utilized for processing. At present, the preparation of the final GIS map of the bamboo stands in Batangas is still underway.

⇒ Database Development- Since last quarter of t h e p r e v i o u s year (CY 2011), the P r o j e c t S t a f f o f E R D S Region 4A s t a r t e d developing a database f o r t h e Survey of Bamboo Stands Project. The database would contain the datasets entered in the worksheets supplied by ERDB. As of June 2012, the database is still a work in progress. Continuous upgrades were still being applied in order to ensure the completeness of the data. The ERDS 4A aims to come up with a program that could Detailed Accomplishments and/or Milestones CY 2012 Annual Report - DENR CALABARZON Region 153 accommodate the other Regions’ data, thus, a National Database of Bamboo stands in the Philippines. Microsoft Access was being utilized in the development of the program. Figure E-3 shows the interface of the database. In the implementation of this Project, the sector has encountered the following issues and concerns: 1) Mobility; 2) low hardware specifications (for RS and GIS); and 3) relatively low-resolution satellite imageries, in which might then be resolved through upgrading of computer units and acquisition of hig-resolution (5m x 5m) infra-red satellite imageries, (if pos sible).