一种评价陆地植物资源利用前景的估量方法——以浙江药用蕨类为例

 为陆地植物资源利用前景提供计算或估量方法，是促使资源管理措施不断完善的手段之一。笔者以浙江166种药用蕨类为例，提出了一种陆地植物资源可利用量的估量方法。使本方法获得可利用量估量值的是五项要素，每一项要素的三个数字等级。五项要素内的生境H(Habitat)和再生能力R(Regeneration ability)基本上是稳定不变的，频度F(Frequency)，多度A(Abundance)是沿用植物群落学的方法，不同之处是把评定的范围，从定量的样地扩大到一个自然区域或行政区域。只有利用程度U(Utilization)因受人类支配是变化较大的要素。但是，它是十分重要的。对陆地植物资源实施管理的依据是由五项要素的等级累计所得，即用数值表示的可利用量估量所得的值，但在划分资源的管理等级时，由于可能存在着人的主观判断，因此，要求反复查核资源的现状后再予以确定。

A Method for Evaluating the Utilization Prospect of Terrestrial Plant Resources

One of the means to promote the continuous perfaction of the management measures of natural resources is to provide some method for calculating or evaluating the utilization prospect of terrestrial plant resources. Taking the medicinal ferns of Zhejiang Province as an illustrative example, a method to this end is put forward by the author of this article.What makes it possible for this method to obtain the estimation value of the possible utilization amount is the five elements and the three-figure grades of each of them. The five elements are habitat (H), regenerative ability (R), frequency (F), abundance (A) and utilization (U). H and R are basically constant without variation, and F and A continue to use the conventional method of phytocoenology with the only difference that the scope of assessment is extended from a model plot of definite area to that of a natural region of vegetation or an administrative division. Only the element of utilization is subject to great changes, owing to the influence of human beings. This makes it the most important element of the five.The actual management of terrestrial plant resources(U)is based on the accumulated value V of the grade figures of the five elements, namely the assessed possible amount for utilization expressed in numerical value. But as it is possible that man’s subjectivity exists on the determination of the grades of management of natural resources, so it is requested that the actual situation of such resources be examined and checked again and again before any final decision is made.