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森林抚育是指林木种植、培育到成熟的过程。从提升森林抚育优化观念,加大宣传力度;提升森林抚育工作的规范性,发展专业人培训;加强抚育结果监督力度,保障抚育成果等方面提出了森林抚育对策。 相似文献
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楚雄州油茶资源现状与产业发展对策 总被引:1,自引:0,他引:1
介绍楚雄州油茶种类、分布范围及其面积,分析油茶产业发展中存在的产业发展规模小,经营管理粗放,大多处于自然生长状态;产量和效益不高;生产经营过程科技含量不高;资金投入不足等问题.藉此提出了科学制定发展规划,搞活经营机制,加大投入力度和宣传力度,示范引路等对策措施. 相似文献
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浏阳市油茶产业化发展现状及对策 总被引:1,自引:0,他引:1
针对浏阳油茶产业化发展情况 ,分析了开发中存在的管理水平低、种质差和产品加工粗放等问题 ,提出了加大宣传力度 ,增加投入 ;重视和增强油茶品系建设 ;开展油茶产品深加工 ;开发市场等对策 相似文献
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本文在调查研究隆昌县低效林现状基础上,通过低效林改造实践,提出了隆昌县低效林改造的科学规划,合理布局,规范操作等措施和创新机制;以及与生态建设相结合,与特色产业发展相结合,与扶持龙头企业发展相结合,加大资金保障力度和宣传力度等对策。 相似文献
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以湖南新邵筱溪国家湿地公园为例,在简述其基本情况、湿地保护工程建设的基础上,从加大宣传力度,提高公众对湿地保护重要性的认识;加大湿地公园湿地保护资金投入;加快建立湿地保护生态补偿机制;完善相关湿地保护法律法规;建立健全科技支撑体系,加大创新力度等五个方面提出了湿地公园湿地保护建设的建议。 相似文献
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Mateusz Liziniewicz Per Magnus Ekö Fredrik Klang 《Scandinavian Journal of Forest Research》2016,31(5):495-506
The aim of this study was to show the effects of five tree-selection strategies when thinning on quality and growth properties of Norway spruce stands, and their potential for improving quality in the stands. The five strategies were thinning to retain high-quality (HQ) and low-quality (LQ) trees, thinning from above (A) and below (B) and thinning to obtain an even distribution of residual trees (S). The study was conducted in two planted stands close to rotation age, located in southern Sweden, which had been thinned twice since the establishment of the thinning experiment. In the two quality-based treatments trees were selected for harvest on the basis of the following growth and quality traits: tree class, vitality, dbh, height, straightness, branch diameter and quality defects. The quality traits were found to be largely independent of tree size, thus the selection strategies based solely on dbh (A and B) did not improve quality within the stands. Thinning targeting HQ traits promoted the retention and growth of HQ trees, and improved overall quality of the stands compared to the other treatments. HQ thinning increased the share of straight trees by 15%, on average. Significant proportions of stem crooks and quality defects detected before the first thinning were invisible 21 years after it. All thinned stands had higher proportions of naturally pruned trees than unthinned stands. The selection method had no influence on periodic annual increment after thinning. 相似文献
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以广西冷寒区的几个桉树树种的人工林为研究对象,对比分析不同树种的桉木旋切单板外观质量特性以及林分密度对其影响。结果表明:在树种的单板外观质量如针节、活节、死节、孔洞、端裂等方面,各树种之间均差异显著;同样林分密度对其影响也很显著,高林分密度有利于单板外观质量改善;单板外观质量性状聚类分析结果表明:邓恩桉、本沁桉、柳桉、尾巨桉单板材性相近,而粗皮桉和巨桉显著地区别于其他树种;依据外观质量综合评价结果,适合于冷寒区发展的桉树胶合板材培育的有柳桉、邓恩桉、大花序桉、本沁桉树种,以柳桉为最优选择。 相似文献
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森林质量评价研究探讨 总被引:3,自引:0,他引:3
森林质量性状的改善对于维系和增加森林资源至关重要,但在我国森林经营管理中一直存在重数量、轻质量的现象,随着造林面积的增加,森林质量却在下降。目前,森林质量问题已开始受到关注。文章在介绍国内外森林质量评价研究进展基础上,提出森林质量评价应分别从林分水平、景观水平、区域水平进行多重尺度的评价的观点。并以广州市白云区为例,从三个尺度水平对白云区生态公益林质量进行评价,为管理生态公益林提供了科学依据,对于保护和建设好生态公益林具有重要的现实意义。 相似文献
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We studied the effects of light quality and nutrient supply on growth and nitrogen accumulation in silver birch (Betula pendula Roth) seedlings to test three hypotheses: (1) growth of birch seedlings is sensitive to changes in light quality; (2) the response of birch seedling growth to light quality depends on nutrient supply; and (3) assimilation and allocation of nitrogen by birch seedlings are affected by light quality. The two light regimes simulated the spectral quality of sunlight and shadelight, but did not differ in photosynthetic photon flux density, and the two nutrient supply regimes differed in the rate of supply, but not in the composition, of mineral nutrients. Accumulation and allocation of dry weight and nitrogen were strongly affected by nutrient supply regime, but light quality had little effect. During the first 15 days of the experiment, the largest effect of light quality was on height growth, which was greater in seedlings in simulated shadelight than in seedlings in simulated sunlight. Light quality had little effect on dry weight and nitrogen allocation to the stem during this period. However, at the end of the experiment (Day 29), there was an increase in N concentration per unit dry weight in leaves and stems of seedlings in the simulated shadelight plus high nutrient supply treatment. 相似文献
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研究产品和服务质量、顾客满意度与顾客忠诚度三者之间的关系,并构建相关结构模型。以黑龙江省某造纸公司的产品为研究对象,通过收集满意度调查问卷,运用因子分析方法来验证上述命题假设。结果表明:产品质量和服务质量对顾客满意度有积极影响,顾客对产品的质量要求要高于服务质量。顾客的感知价值更多来源于产品质量。而顾客满意度又是影响顾客忠诚度的重要指标,为提高顾客保留率、提升钱包份额起了非常重要的作用。研究结果为提高顾客满意度和忠诚提供理论依据,并帮助企业明确市场定位,对今后的发展做出明智和准确的决策。 相似文献