树种单一，多为纯林。
纯林改造后，对土壤有机质含量和含水率都有显著提高；
Soil organic matter contents and water content were obviously improved.
在树木生长表现和土壤酶活性发挥方面，混交林优于纯林。
Also, the tree growth and the soil enzyme activity of mixed stand were all better than that of the pure stands.
近年来，浙江省局部地区国外松纯林受芽流脂病危害较为严重。
In recent years, pure forests of exotic pines were seriously harmed by resinosis in some areas of Zhejiang.
与杉木纯林相比，黑荆和杉木混交能改良林地，提高土壤肥力。
As compared with the China-fir pure stand, it could improve the woodland, and increase the fertility in...
与杉木纯林相比，黑荆和杉木混交能改良林地，提高土壤肥力。
As compared with the China-fir pure stand, it could improve the woodland, and increase the fertility in the mi...
人工林区的刺槐和油松混交林群落的物种丰富度高于其纯林群落。
The difference between Locust community and Chinese pinus community were decided by characteristics and habitats of communities.
结果表明，一年中混交林及纯林土壤速效养分和叶养分含量随季节而异。
The results showed that nutrients contents of the tree leaves and contents of the available nutrients of soil in the mixed stand and pure one varied with seasons of the year.
结果表明：松栎混交林对土壤的改良效果最好，草地次之，马尾松纯林则较差。
The results indicated that the effect of mixed masson pine and oak forest on soil amelioration was the best, that of grass was the second and the pure masson pine forest was the worst.
喀纳斯自然保护区内，不但有五针松纯林，还有五针松与云杉或冷杉的混交林。
Within the Kanas Nature Reserve, grow pure forest of stone pine as well as mixed forest of stone pine with spruce or stone pine with fir.
林地土壤因子调查的结果是混交林内土壤的通气性、透水性及总孔隙度均好于纯林。
Investigation of the soil factors showed that the aeration and water perviousness of mixed forest were better than that of pure forest.
结果表明：空间统计学半方差方法可以作为郁闭度较高纯林林分冠幅估计的一种有效方法。
It is concluded that the semivariogram method of spatial statistics may be as an effective means of estimating the crown of pure forest stand with relative high crown closure.
在西芹林场选择有代表性的青钱柳、杉木混交林A、B两种和杉木纯林，进行生物量测定。
Representative mixed plantations A, B of Cyclocarya paliurua Ilinsk and Chinese fir and pure stand of Chinese fir in Xiqin Experimental Forest Farm were selected, and their biomass was determined.
经研究证明，威布尔分布不但适用于同龄纯林直径分布，而且亦适用于复层异龄林直径分布。
The result showed that the Welbull Distribution was not only suited to diameter distribution of the even-aged pure forest, but also to the multi.
结果表明，杉木桤木混交林林分蓄积量大于杉木纯林，但差异未达显著水平（P>0.05）；
The results showed that stand volume of the mixed plantation was higher than that of the pure Chinese fir plantation, but the difference is not significant(P>0.05).
改造后的纯林内增加了土壤表面的枯枝落叶层，从而使得其内的土壤容重小，土壤孔隙度变大；
The mixed forest transformed net increase in forest litter layer of the soil surface allowed the small soil bulk density and larger soil porosity.
不同配置模式沙柳林年均林地土壤含水量垂直变化无显著差异，但中密度沙柳纯林内土壤含水量最低。
There are no vertical differences on soil moisture dynamics configured salix pasmmophia forest, while the mid-density salix pasmmophia forest has the lowest soil moisture.
毛竹纯林随经营期的延长，其土壤的自然肥力呈下降趋势，这是毛竹纯林的生长特性和经营方式决定的。
As the management term of pure bamboo stands prolonged the natural soil fertility declined, which resulted from the growth characteristics of pure bamboo forest and the management methods.
纯林中马尾松的干生物量基本上为金字塔形，枯枝生物量所占比例为1.75%，而混交林中为4.20%。
The stem biomass of Pinus in the pure forest was of pyramid shape and the deadwood biomass accounted for 1.75%, but 4.20% in the mixed forest.
针对目前人工纯林地力衰退的问题，提出了混交林可作为防止地力衰退的途径，并对混交林应用上的有关问题作了探讨。
Mixed plantation can be used to prevent soil productivity from deterioration in the repeated pure plantations. Some problems of the application of mixed plantation are also discussed in this paper.
然而，单一种植的人工纯林使鸟类和其他物种的栖息地减小，因此也缩减了人们本能够从生物天然播种过程中的获取的好处。
Monoculture forests reduce the range of habitats for birds and other wildlife and thereby reduce the environmental and economic benefits people derive from wildlife seed-dispersal.
同时，林—药混交林的一次性经济效益较木材与药材纯林高，具有较为稳定的阶段性经济效益，可以在短、中、长期为当地农民带来了一定的经济收入。
At the same time, developing marketable medicinal materials could bring a steady economic profit and promote the income of local farmers in short time, middle period and long term.
同时，林—药混交林的一次性经济效益较木材与药材纯林高，具有较为稳定的阶段性经济效益，可以在短、中、长期为当地农民带来了一定的经济收入。
At the same time, developing marketable medicinal materials could bring a steady economic profit and promote the income of local farmers in short time, middle period and long term.
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