林地利用率

该流域森林资源有限且分布不均；单位蓄积量低，林龄结构不合理；林地利用率不高，病虫鼠害严重。

It also shows low unit stock volume , unreasonable forest age structure , low forestland use ratio and severe pest , disease and rat disaster .

结果表明：这一混交模式可以大大提高经济效益，使林地利用率得到显著提高，是值得在黑龙江东部山区推广的混交模式。

Result showed that the mixed pattern can increase the economic benefit and significantly improve land utilization , which can be popularized in the eastern mountain areas of Heilongjiang Province .

根据在安塞黄土丘陵沟壑区的观测资料，对5～7龄沙棘林地土壤水分及其对生长的影响进行了定量研究，为提高沙棘林地土壤水分利用率，改善其经营管理提供了科学依据。

According to the observed data from loess hilly region at Ansai county in 1998 , soil moisture of 5 ~ 7 year seabuckthorn stands and its influence on seabuckthorn growth are studied .