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雨后沂蒙,天蓝得出奇。循着阵阵百合花的香气,我们来到了沭河岸边的山东沂水百合研究开发中心。山东沂水食用百合研究开发中心由品种选育试验场,种植示范园、食用百合协会组成,示范园占地242亩,试验场地占地300亩,创建于1996年,是世界上第一个高科技综合研究生产有机食用百合的中心,是省级高科技食用百合科研生产基地、十大高科技生态农林推广示范单位。 相似文献
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以妥善解决“治理与破坏相持阶段”林地保护管理中存在的问题为切入点,重点探讨控制、规范建设工程征占用林地的对策。 相似文献
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2019年,张掖市民乐县民联镇东寨村成功列入第一批全国乡村旅游重点村名录。早年的东寨村是一个仅有68户,290多人的小村庄,地处戈壁荒滩,干旱缺水,经济发展滞后。东寨村从一个默默无闻的西北小村落发展到全国、全省、全市知名的旅游示范村,从一汪小池塘建成集一二三产融合发展,占地规模达到3500亩的综合性旅游示范村,经过5年多时间的建设和不断发展,形成了如诗如画的田园风光,真正做到了让游客望得见山、看得见水、记得住乡愁。 相似文献
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Xiyang Zhao ;Cheng Wang ;Shuchun Li ;Wei Hou ;Shiqing Zhang ;Guijie Han ;Deng Pan ;Ping Wang ;Yufei Cheng ;Guifeng Liu 《林业研究》2014,25(3):549-556
Siberian Pine (Pinus sibirica) is an ecologically and eco-nomically important species in pristine forests throughout northern Rus-sia. Four provenances of P. sibirica were introduced from Mongolia and Russia to the Greater Xing’an Range (the Daxing’anling), northeast China in 1993. The aim of this research was to study genetic variation and selection of the introduced four Pinus sibirica provenances. Heights (H), basal diameters (BD), survival rates (SR) and crown lengths (CL) of different families were measured as primary outcomes in different growth years. Results of data analyses demonstrated high coefficients of phenotypic variation (PCV) and heritability (H2) for H, BD and CL at 18 years after introduction. PCV and H2 increased with age. Correlations of growth traits between any two growth years were all significantly positive, but the correlation coefficient was smaller when the growth year interval was larger. Correlations between H and the original environment factors decreased gradually, indicating that with long-term subsistence in the new environment, the influence of the source environment declined. Colligation of multiple traits to estimate provenances showed that Novosibirsk, Tomsk, and Altai Mountains had higher survival rates and biomass, and proved more suitable for introduction and plantation in the Greater Xing’an Range in China. 相似文献
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利用林内高压线、通讯线占地发展林下经济 总被引:1,自引:0,他引:1
利用线影占地发展林下经济,即能有效利用林地,又能增加职工收入。本文介绍了线影占地的利用途径。 相似文献
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穿梭于邱县乡镇道路之间,举目四望,占地1000余商的文金苗木种植园、繁育苗木1500亩的沐泽种植园,规划占地2000余亩的林峰丝绵木种植基地等多个千亩以上园区内,各种苗木生机勃勃。 相似文献
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土地复垦项目规划设计的合理性是土地复垦项目投资合理性的前提。首先分析了线形工程项目占地复垦对象和传统的土地复垦项目规划设计思路的特点,然后结合线形项目占地复垦对象的特点对传统复垦规划设计思路进行了改进,并结合南水北调满城段土地复垦项目对改进的规划设计思路进行了说明。 相似文献