沙棘资源生态经济效益评价

Eco-economical efficiency of Hippophae rhamnoides L. resources in Gansu

对沙棘资源涵养水源、防止水土流失和保护农田等方面的生态效益进行了调查以及价值量化分析，结果表明，沙棘的水保功能与林木生长量呈正相关；生态效益与林地枯枝落叶层厚度正相关；沙棘资源的生态效益是经济效益的2.11倍。

：The ecological efficiency of Hippophae rhamnoides L., such as conserving water, preventing soil and water loss and protecting field was investigated and valued. The result shows: there are correct relation between conserving water function and product quantity; there is also correct relation between ecological efficiency and the layer height of falling stems and leaves. The ecological efficiency of Hippophae rhamnoides L is 2.11 times as econornical efficiency.