共查询到20条相似文献,搜索用时 15 毫秒
1.
四川省农业资源开发利用现状及可持续利用对策 总被引:1,自引:0,他引:1
采用系统、综合分析法,全面、系统、科学的分析评价了四川农业资源开发利用现状及其发展变化趋势,针对四川耕地面积不断减少、人地矛盾日趋尖锐、水土流失严重、水资源利用率低、水资源污染日趋严重等制约四川经济社会可持续发展的主要因素,提出了切实保护耕地、加强生态环境保护和建设、防治水资源污染、提高水资源利用率和供水能力等一系列实现农业资源可持续利用的对策和措施. 相似文献
2.
3.
4.
环境资源与生态系统的关系 总被引:1,自引:1,他引:0
采用论述、图解及数学关系式的方法,较深入地分析了资源、环境与生态系统的关系。认为环境要素可分为仅产生污染型影响的环境要素;既可以产生污染型影响又可以导致资源破坏型影响的环境要素;仅产生资源破坏型影响3种类型。自然环境的优劣由组成自然环境各环境要素的环境质量状况和可作为自然环境要素的自然资源的数量多少决定。要实现环境与经济的可持续发展,应该把环境质量和资源利用同时作为衡量环境优劣的因素。 相似文献
5.
文章概述了漓江流域水环境现状,分析了存在的主要问题,阐明了流域水灾频繁、水环境污染的成因,指出了流域森林结构欠合理,调蓄能力不足,导致了流域洪涝、干旱频繁,枯水期长,水资源短缺;流域生活与生产排污,造成枯水期水污染。因而需进行深入的科学研究、绿化、兴修水利工程、实施节水技术、严格管理、科学调配水资源等综合举措,实现流域的可持续发展。 相似文献
6.
TU Jianjun DENG Yulin 《山地科学学报》2005,2(3):244-254
Introduction Western China is vast in area with different landforms and ecosystems, and its environment is deteriorated with different agricultural productivities. The northwestern region is very drought for lack of rainfall, and desertification there is serious with difficulty in vegetation restoration, while in the southwestern region the land is fragile, vegetation is degraded and water and soil loss serious. Even worse, for the lack of effective management, new environmental problems deriv… 相似文献
7.
After the survey of pollution sources, a study on surface water quality assessment and forecast is given by means of grey
system method, fuzzy mathematical method and multiple-index method. Based on it, aquatic environment quality features, treatment
measures and environmental strategies of the area are proposed. The quality of aquatic environment of 5 rivers in the Tumen
River area is studied. The results show that the pollution of surface water is serious; water quality of most rivers is between
grade IV and V except the Hunchun River, being higher than grade IV standard; pollution levels of most rivers have been basically
controlled except the of Burhatong River, which is deteriorating gradually. Pollutants of the rivers are comparatively regular,
mainly are SS, COD, BOD, AR-OH, NH3-N. The main pollution trades are chemical fibre industry, pulp and paper making industry and mining industry. If the growth
rate of gross industrial product is higher than 25 percent under the encouraging-model of regional exploitation, the pollutants’
load will overtake the bearing capacity of aquatic environment. Thus some protection program against pollution must be worked
out in order to achieve the harmonious development of economy society and environment.
A project from “Studies on Earlier Stage of Regional Development” of the Chinese Academy of Sciences 相似文献
8.
本文应用地理信息系统所具有的巨大数据综合处理、空间分析和模型运算等技术优势 ,评价与分析福建农业生态环境中的土壤侵蚀、土壤污染、土壤养分贫瘠和功能稳定性等重要问题 ,提出区域特征的空间分布. 相似文献
9.
10.
河南省自然地质条件复杂 ,生态环境脆弱 ,不仅分布有特殊不良地质环境条件和严重的地质灾害 ,而且存在由人类活动引起的诸多环境地质问题。特殊不良地质环境条件主要有特殊不良岩土体 (湿陷性黄土与胀缩土 )、原生地球化学异常 (高氟水、低碘水、咸水 )和次生地球化学异常(土壤盐渍化 ) ;地质灾害有崩塌、滑坡、泥石流、水土流失、地面塌陷、矿坑突水、瓦斯爆炸等 ;环境地质问题有水资源枯竭、水质污染、固体废弃物堆放等。这些已成为制约我省人民生活水平提高和社会经济发展的重要因素 相似文献
11.
辽宁省矿产资源丰富 ,开发历史悠久 ,规模大、强度高 ,因而诱发了诸多的矿山环境地质问题。按其灾变的时间特征 ,可将其划分为突变型地质灾害和缓变型环境地质问题两大类。崩塌、滑坡、地面塌陷 ,矿坑突水、瓦斯爆炸等地质灾害属于前者 ;水土流失、地下水污染、煤矸石自燃等环境地质问题属于后者。笔者概述了各灾种的发育特征和危害现状 ,分析探讨了其形成的自然因素和人为因素 ,并提出了相应的防灾减灾对策及建议。 相似文献
12.
A study on quality of aquatic environment in Tumen River Area 总被引:3,自引:0,他引:3
ASTUDYONQUALITYOFAQUATICENVIRONMENTINTUMENRIVERAREA①ZhuYanming(朱颜明)ChangchunInstituteofGeography,theChineseAcademyofSciences,... 相似文献
13.
(姚建衢)(杨焕宗)COORDINATINGDEVELOPMENTOFAGRICULTURALRESOURCESANDENVIRONMENTOFTHETROPICREGIONINYUNNANPROVINCE¥YaoJianqu(Instituteof... 相似文献
14.
傅学良 《广东海洋大学学报》2006,26(2):41-43
当今社会正面临日趋严重且类型众多的灾害,构成生态环境安全的巨大威胁。运用刑法武器维护环境安全成为各国普遍采用的法制手段,但是我国刑法在环境刑事责任的归责陈述、承担主体、归责因果关系以及环境刑事责任的实现等诸方面。并没有体现出与宴践相适应的环境刑事责任理论。鉴于此,立足于环境安全视角,评述环境刑事责任的现状及发展。 相似文献
15.
傅学良 《广东海洋大学学报》2006,26(2):41-43
当今社会正面临日趋严重且类型众多的灾害,构成生态环境安全的巨大威胁。运用刑法武器维护环境安全成为各国普遍采用的法制手段,但是我国刑法在环境刑事责任的归责陈述、承担主体、归责因果关系以及环境刑事责任的实现等诸方面,并没有体现出与实践相适应的环境刑事责任理论。鉴于此,立足于环境安全视角,评述环境刑事责任的现状及发展。 相似文献
16.
ON REGIONAL DIFFERENTIATION OF RIVER WATER ENVIRONMENT CAPACITY AND STRATEGIES TO CONTROL WATER ENVIRONMENT POLLUTION IN CHINA 总被引:2,自引:0,他引:2
ONREGIONALDIFFERENTIATIONOFRIVERWATERENVIRONMENTCAPACITYANDSTRATEGIESTOCONTROLWATERENVIRONMENTPOLLUTIONINCHINA¥WangHuadong(王华... 相似文献
17.
CHENJie 《中国地理科学(英文版)》2004,14(3):227-238
Rapid urbanization and growing size of cities will have an increasing impact on the global environment in the 21st century. As an engine of urban development to drive economic growth and technological innovations, industry has moved its focus from controlling environmental hazards to stimulating sustainable industrial development throughout the entire product lifecycle. These process- and technology-driven innovations for industrial production are prerequisites for enhancement of urban environment and sustainable development of cities. In this review, problems of environment and resources scarcity associated with rapid urbanization are demonstrated. And, on the basis of expatiations on the concepts and policies of the cleaner production (CP) and other similar initiatives with the goal of preventing pollution at the source and of managing the raw material more efficiently, two different ways to link the practice of cleaner production in industrial sector with performance of urban environment are discussed in detail. Then, the introduction, practice and legislation of CP strategies in China are outlined, and possibility for China to develop CPC (Cleaner Practices for Cities) approaches in the demonstration cities is discussed. Finally, some suggestions on implementation of CPC strategies are put forward. 相似文献
18.
范高功 《地球科学与环境学报》2001,23(2):21-25
在论述陕北地区自然地理、地质地貌特征基础上,分析研究了陕北地区在经济建设中突出的生态环境问题,论证了生态环境与水资源之间的关系。根据陕北地区自然地理特征,提出了生态环境建设的方向和措施,以及水资源合理开发利用的建议。 相似文献
19.
区域尺度农田氮磷非点源污染与模型应用分析 总被引:3,自引:0,他引:3
分析了农田非点源污染对生态环境的危害性,并阐述农田氮、磷非点源污染的机理及其在不同自然条件下的影响因素和监测方法。同时,对农田非点源污染的定量化、应用效应等进行了对比分析。此外,结合农田非点源污染与相关模型作了应用实例分析。 相似文献