含泪播种含笑收获--访浏阳市雄丰蔬菜生产专业合作社负责人汤良球

浏阳市雄丰蔬菜生产专业合作社（以下简称合作社）2007年成立，位于浏阳河上游大围山脉下的官渡地区，环境优美、气候适宜，具有得天独厚的地理优势。合作社在历经近十载的积累与发展，如今已戴上“国家农民合作社示范社”的桂冠，可有谁知晓其中的艰辛与困惑，又有谁能破解其成功的秘诀，记者在浏阳市蔬菜管理和技术推广中心吉甫成主任的陪同下，揭秘含泪播种的人是如何做到含笑收获的。     

九寨沟-岷山山脉地区东方蜜蜂形态特征研究

通过测定九寨沟-岷山山脉地区的6个不同样点21群东方蜜蜂的38个形态特征，采用计算机进行数据分析，得出了该地区的东方蜜蜂的形态学数据，通过对这些形态学数据的研究发现，该地区的东方蜜蜂可分为三个类群；与邻近的甘肃省定西、平凉、奉安的东方蜜蜂作对比，同我国部分地区的东方蜜蜂形态数据进行分析发现，九寨沟的东方蜜蜂与甘肃的岷县、临潭县的东方蜜蜂亲缘关系较近。而甘肃定西、平凉、奉安的东方蜜蜂则与河南、陕西等省份的东方蜜蜂的亲缘关系及较近，在九寨沟-岷山山脉地区这一小的生态区域内，东方蜜蜂的形态特征较为特别，与其它生态区域的东方蜜蜂相比，个体体色差异较大，体型较大。     

适宜湖南省推广的柑桔良种

柑桔品种很多，品种特性、成熟期早晚、食用方式以及抗寒性差异较大。湖南省属中亚热带季风气候区，是适宜的柑桔产区，综合考虑各地的生态环境条件、现有产业基础和市场未来走向，湖南省应形成以宽皮柑桔类为主，适当发展甜橙、枘类和杂柑类的生产格局。《湖南柑桔10年发展规划》中已明确将南岭山脉至雪峰山脉南端的湘南定为鲜食脐橙与加工甜橙产业带；雪峰山脉及武陵山脉东麓定为鲜食与加工温州蜜柑产业带；建立武陵山脉的椪柑生产基地，湘西南的冰糖橙生产基地以及江永等地的良种柚生产基地。     

Bioinventory and documentation of traditional ecological knowledge of wild edible fruits of Kodagu-Western Ghats,India

Forty-five species of wild edible fruits were identified and traditional local knowledge of their usage was recorded in 40 villages of Kodagu district in Central Western Ghats, India one of the eight top hotspots of biodiversity in the world. We combined biodiversity inven-tory of trees with village interviews to record traditional ecological knowledge. Wild edible fruits were an opportunistic source of food for rural people. Wild edible fruits were rich in minerals, vitamins, carbohy-drates, proteins, fats and fiber. In recent years there has been a decline in numbers of wild fruit trees due to changes in land use from uncultivated private wooded area to cardamom and coffee cultivation. The availability of wild edible fruits that were once very common on private cultivated areas has declined and their distributions are now restricted more to jungles and wildlife sanctuaries. We propose methods for conservation and describe the need for sustainable utilization to provide supplemen-tary sources of nutritional and pharmaceutically useful edible wild fruits.     

Genetic and morphological variation in natural teak （Tectona grandis） populations of the Western Ghats in Southern India

Teak(Tectona grandis L.f.) is a popular hardwood species native to South and South-East Asia. The possible association of amplified fragment length polymorphism(AFLP) marker with morphological variables of eleven important characters viz. girth at breast height(GBH), height of tree, bole height, branch knots, presence of fluting, spiral stem, leaf hair, leaf length/breadth ratio, branching pattern, bark colour and petiole shape for nine natural populations comprising 180 genotypes of teak(9 populations × 20 trees). The phenogram constructed using Euclidean distances for the eleven morphological characters showed that the populations were not grouped according to their geographical origin. The Mantel's test for pairwise correlation between Euclidean distances of different morphological variables and genetic distances from AFLP data revealed that only petiole character(r =0.269; p =0.046) and height of tree(r =0.200; p =0.001) were significantly correlated with that of AFLP data matrix. The nine populations in this study covered a geographic area of about 1000 km stretch along the Western Ghat of South India. A test of correlation between genetic and geographic distance matrices revealed a significant positive correlation(r =0.475; p =0.009). The lack of perfect congruence between morphological and molecular data except for geographic distance, tree height and petiole character suggested that the morphological system might be useful for the morphotypes management but not appropriate to study the genetic structure of the teak populations.     

韭菜坪 眺望贵州的平台

<正>乌蒙山脉,几乎占据整个黔西北高原。它的主峰——韭菜坪,就是贵州省境内的最高点。韭菜坪高耸入云,顶部却是一块平缓的台地。站在台地上,可以极目远眺毕节和六盘水的苍莽群山。贵州地处云贵高原向广西丘陵平原过渡的斜坡地带,地势西高东低,自中部向北、东、南三面倾斜,境内山脉众多,重峦叠嶂,绵延纵横,山高谷深,是中国唯一没有平原支撑的山区省份。因为自然环境的特殊性,自古以来贵州就是一片神奇的土地。     

雪峰山脉生态公益林生态服务功能评估

对雪峰山脉公益林2019年生态系统服务功能进行定量评估,结果表明:雪峰山公益林涵养水源62.68亿m3·a-1,固土7033.06万t·a-1,固碳释氧1134.39万t·a-1;林木积累营养物质4.7797万t·a-1;提供负离子1.48×1025个·a-1,吸收污染物28.14万t·a-1,滞尘475.10万t·a...     

梵净山 中亚热带的原生植被

<正>梵净山,原名"三山谷",位于贵州省铜仁市,得名于"梵天净土"。海拔2572米的梵净山是武陵山脉的主峰,乌江与沅江的分水岭,也是与山西五台山、浙江普陀山、四川峨眉山、安徽九华山齐名的中国第五大佛教名山。梵净山是中国黄河以南最早从海洋中抬升为陆地的古老地区,留下了10亿至14亿年前形成的奇特地貌景观:孤峰突兀,断崖陡绝,沟谷深邃,瀑流跌宕。     

九龙峰保护区旅游开发前景

九龙峰省级自然保护区地处黄山山脉主峰西北,其前身是贤村森工实验采育场,区内有1200公顷的天然次生林保存完好,境内林茂竹丰,动植物资源极为丰富,森林生态系统较为完整,具有独特的森林景观和旅游价值.     

贵州香猪遗传资源保护利用进展

香猪是原始小型猪种,具有近交不退化、可放牧饲养的特点,是加工高档猪肉产品的上佳原料,也是用作试验动物的理想猪种[1]。香猪作为一个独特而珍贵的中国地方猪种,从发现之日起,就引起世人关注。本文从香猪的发现、研究和开发利用三个方面介绍香猪遗传资源开发利用的历程。1香猪的发现香猪主产地位于云贵高原苗岭山脉向广西丘陵、盆地过渡的高山和低谷地带。当地地貌复杂,都柳江及其支流纵横交错,将山势切割得幽深而陡峭。中心产区位于我国于贵州