PRIS 1.0爲一整合性之軟體有助於植被分析及植物資源之調查，其目的在提供有關植被及植種之相關資料給予科學硏究者、保育單位、土地利用規制者及資源經營者。PRIS之資料來源包含⑴標本館及博物館收藏之標本；⑵分類學、植物地理學及生態學等相關之硏究報吿；⑶實際野外收集之資料。 PRIS在目前廣泛流行之286及386微電腦上執行，可區分爲兩單元，其間有部分互通性。 第一單元PRIS I做爲植被分析之用，其主要功能爲：(1)原始調査資料整理；(2)植物目錄製作；(3)相似性度量;(4)優勢度及組成分析；(5)種歧異度計算；（6)排序分析；（7)羣團分析；(8)迥歸分析； (9)族羣結構分析；(10)分布類型分析等。 第二單元PRIS II可供綜合植種資料之用。擧凡分類特徽、生物特性、生育地狀況、稀有度、 生存威脅以及標本資料均可納入，以做爲査詢之依據。另外PRIS II尙合併影像及圖形之功能，使得運用上更具彈性。

The PRIS is ail integrated software system designed to facilitate vegetation survey and resource inventories. The concept behind this system was to develop a tool that could provide information about species and vegetation to conservation agencies, scientific researchers, Jand-use planners, and resource managers. Sources of information included in the PRIS can be: (1) museum or herbarium collections; (2) extensive searches through scientific and publications pertiiining to taxonomy, phytogeography, ecology, biology, and uses of plants; and (3) data from field survey. PRIS takes the advant.^ge of the affordable and widespread personal computer. It requires a 286 or 386 computer with an image system. The software is organized into two subsystems. PRIS I is used for vegetation analysis. Capabilities include: raw data manipulation, plant list prepa- ration, resemblance measurement, dominance and composition analyses, calculation of species diversity, ordination, clustering, regression, populu-tion structure analysis, and preparation of species distribution. The second subsystem PRIS II is designed to synthesize information on the status of a species or other taxon. It integrates information regarding herbarium collections, taxonomic classification, biological characteristics, habitat and environment, economic value, legal status, and degree of threat or protection for the various populations. The subsystem also incorporates graphics and image functions, and makes it more versatile and powerful.