西藏色季拉山野生观赏树木资源及其开发利用

西藏色季拉山区野生观赏树木资源丰富，有４０科７５属１９０余种。种类最多的科是蔷薇科、杜鹃花科、忍冬科、虎耳草科和豆科。种类最多的属是杜鹃花属、忍冬属、李属、绣线菊属和子属。其中花木占４７．６％，花果木占２４．６％，果木占１１．０％。花木中白花者占４６．４％。果木中红果者占８０．９％。７５．３％的种类生于森林型生境。７４．４％的花木夏季开花。生于阳生灌丛型生境的种类最易被驯化。黄牡丹、多蕊金丝桃、小叶子、素馨花和巨柏等应首先开发。

THE WILD ORNAMENTAL XYLOPHYTA RESOURCE IN THE SHERGYLA MOUNTAIN REGION IN TIBET AND ITS EXPLOITATION AND UTILIZATION

The wild ornamental xylophyta resource in the Shergyla Mountain region is abundant. There are 40 families, 75 genuses and more than 190 spieces. The main families are Rose Family, Heath Family, Honeysuckle Family, Saxifrage Family and Pea Family. The main genuses are Rhododendron, Honeysuckle, Plum, Spiraea and Contoneaster. Of them 47.6% are Flower trees, 24.6% are Flower-fruit trees, and 11.0% are Fruit trees. Of the Flower trees, 46.4% are white flower spices, 19.6% yellow, 18. 1 % red and pink, type makes up 75.3%, the Sun-shrubs type 16.8% and the Alpine-shrubs type 7.9%. The spieces of the Sun-shrubs type are introduced and used most easily. Yellow Peony, Hookers St. John'swort, Rockspray Cotoneaster, Largeflower Jasmine, Big Cupress and so on must be exploited first, as they are introduced easily and their ornamental value is very high.