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Silviculture
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Project Management

8.1 Seedling Survival System

8.2 Survival Surveys, Survival Lines, or Plots

8.3 Sx Trials

8 Post-planting Monitoring

While regular survey monitoring and formal trial installations are valuable, the ideal way of keeping track of plantation survival is a combination of the above with field walkthroughs on the site. A walkthrough with survey results is one of the best ways a field practitioner can gain a better understanding of the sites. As well, conditions that would affect future activities on the particular site and planned future areas will be better understood. Historical performance from different prescriptions form a valuable basis for planning future activities.

There are various levels and intensities of post-planting monitoring. The options include Sx trials, staked survival lines or plots, seedling survival surveys system, and survival surveys.

8.1 Seedling Survival System

This system, through which the summary information on the FS 716 is entered, tracks the seedling survival after a minimum of one year on the site (refer to the "Silviculture Surveys" chapter, Section 4). The ministry standard for defining successful establishment is that the seedling has survived two years in the field. The computer system is accessed from the main menu of PROFS using the PF5 "Information Systems" key. The "Forest Systems" are then accessed using the PF4 key and then the Seedling Survival System is accessed through the PF6 key. The system has a very detailed on-line help system to provide guidance in its use.

There are a number of reports available for a wide variety of sort criteria. The Seedling Survival User Manual has detailed instructions for system use and examples of available reports. Each time survival data is summarized it is required to be entered in the ISIS system under the "Maintain Survey Results" screen. For full details on this, refer to Section 9-21 of the ISIS User Guide.

Future developments to the system include reporting upgrading and integration into ISIS.

8.2 Survival Surveys, Survival Lines, or Plots

Survival surveys provide a basis for estimating the percentage of trees living after a period of time. This information is used to measure the effects of certain treatments or factors on plantation success. Procedures for use of both staked survival lines or plots are outlined in the "Silviculture Surveys" chapter, Section 4, "Project Administration - Contracts."

8.3 Sx Trials

Sx trials provide the most accurate information on seedling survival and performance. These trials are costly, time consuming, and depending on the test criteria, can take a number of years of measurements before reliable practical information is produced. Sx trials are generally put in for assessing new stock types or new treatments prior to inclusion into widespread use. Procedures on Sx trial use are located in the Silviculture Manual chapter on "Silviculture Surveys," "Sx Trials."


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Copyright 1999 Province of British Columbia
Forest Practices Branch
BC Ministry of Forests
This page was last updated December 2000

Comments to: Tim Ebata <Tim.Ebata@gems8.gov.bc.ca>