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藏北高原草地生态系统研究进展(英文) 总被引:1,自引:0,他引:1
With the aggravation of global change, the response and adaptation of the unique ecosystem in Qinghai-Tibet Plateau to global change have been increasingly concerned by scientific community day by day, which makes the sensitivity and fragility of this ecosystem in response to global change widely recognized by scholars. On the basis of introducing the present research process on the degenerate mechanisim, measures of and approaches to recovery, carbon cycle and primary productivity toward global change, we put forward several propositions on studying the alpine grassland ecosystem in Northern Tibetan Plateau. 相似文献
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藏北高原草地生态系统研究进展 总被引:7,自引:1,他引:7
藏北高原又称“羌塘”,位于北纬29°53’-36°32’、东经78°41’-92°16’,面积达59.5万km^2,海拔高度4600-5100m。该区天然草地资源丰富,各类天然草地面积达4800万hm^2,占西藏自治区天然草地面积的59%,是西藏的主要牧区。作为我国长江、怒江、澜沧江等主要江河的源地,藏北高原被誉为“中华水塔”,同时也是全球气候变化的敏感区和启动区。在全球气候变化驱动和不合理人类活动的干扰下,藏北草地生态系统发生了不同程度的退化。 相似文献
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提出甘肃省草地资源退化状况,分析得出人为破坏、草地超负荷利用、草地鼠虫害频繁发生、草地群落物种数减少、草地生态系统生产力下降、不合理的开矿、草地保护、管理意识不强等因素导致了甘肃省草地资源的日益退化。最后指出要恢复草地生态系统,必须从以下七个途径入手,既①强化宣传教育,依法管护草地资源;②科学规划,分类指导;③规模种植,加快人工草地建设;④加强围栏封育;⑤大力实施草地改良;⑥依靠科技进步,保护和建设草地资源;⑦从空中要水。这将对甘肃省乃至西北地区草地生态系统的恢复与重建提供一定的参考。 相似文献
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Grassland ecosystem is one of the most important types in terrestrial ecosystems. It can
provide rich and diverse production and service functions for human beings, and can play an impor?
tant role in protecting biodiversity, providing human resources, conserving water and soil, and protect?
ing water resources. But now with the continuous advancement and development of the human econo?
my and society, in order to pursue more interests, human beings are increasingly plundering the natu?
ral world, leading to the emergence of environmental and natural resources for economic develop?
ment, which seriously restricts the economy. Sustainable development. Based on the above problems,
this paper discusses the biological and functional diversity of grassland ecosystems, and proposes the
optimal management and development prospects of grassland ecosystems. 相似文献
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庞海峰 《黑龙江八一农垦大学学报》2012,24(1):110-114
黑龙江省在引资、利用外资过程中,存在着金融支持力度不够、投资区域不合理、利用外资质量不高等问题。所以,黑龙江省应制定包括与国际惯例接轨的利用外商直接投资政策,促进黑龙江省的经济增长。 相似文献
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黑龙江省生态省建设政策保障体系 总被引:3,自引:0,他引:3
赵鑫 《东北林业大学学报》2003,31(5):56-58
在充分认识黑龙江省建设生态省重要性的基础上,从思想认识、投资保障、经济保障、法律、行政保障、科技保障及宣传教育等方面提出了建设黑龙江省生态省的政策保障体系的具体构想。 相似文献
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农田和草地是我国西部地区主要土地利用类型,加强耕地和草地资源的建设和保护,对实现资源的可持续利用具有重要的作用。对西部地区农田和草地资源现状和存在问题的分析结果表明,西部地区农田和草地资源虽然丰富,但生产力十分低下,不断恶化的生态环境已经严重制约了资源的开发与持续利用。农田和草地不仅是西部地区粮食安全的保障,而且还是保护环境的重要生态屏障,加强立法、加大投入、提高生产技术水平、实行资源长期的监测与评价是建设与保护西部地区耕地和草地资源的重要措施。 相似文献
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黑龙江省高校图书馆文献信息资源共建共享研究 总被引:1,自引:0,他引:1
那伟栋 《农业图书情报学刊》2011,23(6):28-33
对黑龙江省高校图书馆文献信息资源建设与共享现状进行了调查,分析了共建共享存在的问题,提出了实现信息资源共建共享的对策。 相似文献
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The researches were carried out in 2007, 2008 and 2009 at Cluj-Napoca (Romania), in laboratory and field conditions (grassland ecosystems), in four experiments. Our purpose was to study and use some ecological pest control methods based on indirect and direct strategies: (1) the harmful fauna monitoring in grassland ecosystems and useful fauna identification (by visual control, manually collecting, striking method on a tarpaulin); (2) the use of some physico-mechanical and biotechnical methods (use of barriers-vessels, repellents, attractant traps-alimentary, visual) to control the pests. The researches concerning the indirect strategies, carried out from Mars 2007 to September 2009. There were identified 28 pest species and 29 useful ones. The direct strategies to control the pests consisted of 3 experiments. The use of colored traps with water (August 2008) on a meadow with ryegrass and clover, in 6 variants (white, silver, orange, green, blue and red) + control (yellow), recorded a very good efficacy at all variants excepting the red trap (variant 6). The use of repellents (August 2008), absinth decoction (against aphids and ants), bracken extract (against aphids and snails), common tansy decoction (against ants and soil pests) and kaolinite (against a large amount of pests), recorded good results removing the pests. The attractant traps with alimentary baits (beer), meant the use of 10 vessels on a 1000 m2 area, which captured 200 slugs (August 2009). All three methods recorded a good efficacy against the pests. 相似文献
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黑龙江省作为我国大豆的主产区,近几年大豆种植面积逐年下滑。通过分析黑龙江省大豆生产中存在的问题,提出培育专用大豆品种,研究和推广大豆高产栽培技术,调整大豆加工产业结构,建立动态大豆补贴政策等建议,以期为我国大豆产业发展提供理论支撑。 相似文献
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为了改善黑龙江省东南部土壤利用状况,主要概述了黑龙江省东南部土壤资源现状和农业生产现状,并分析了土壤资源由于不合理利用存在的坡耕地水土流失严重、耕地土壤养分失衡、肥料使用比例不合理、土壤环境污染严重及不合理的耕作措施等问题,最后提出了解决当前土壤资源利用与保护的方案,例如改变现行的单一种植模式,大力发展畜牧业、走农牧结合的复合型生态农业,大力推广使用有无机相结合的施肥模式,果农结合减少土壤的侵蚀程度。 相似文献