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四川乌头和附子气候生态适宜性研究   总被引:4,自引:0,他引:4  
本文在分析乌头和附子的生态要求及其主要分布产区的气候环境的基础上,根据模糊集合论(Fuzzy sets)分别建立乌头和附子5个生态气候要素的隶属函数模型,以50个市(县)气象台(站)为代表,综合评价了四川省乌头和附子产地气候条件的生态适宜性;根据综合评判结果,分别将四川划分为3个乌头不同适宜区和4个附子不同适宜区。  相似文献   
2.
Environmental Geochemistry and Health - Environmental emergencies have become a severe challenge to human society due to their great harmfulness, which seriously restrict the sustainable...  相似文献   
3.
Gao  Lan  Jiang  Jingjing  He  Haonan  Zhou  Qi  Wang  Shanyong  Li  Jun 《Environmental geochemistry and health》2022,44(9):3157-3171
Environmental Geochemistry and Health - Achieving carbon neutrality has become a global consensus, and plenty of measures and policies have been proposed in various industries to obtain this...  相似文献   
4.
针对一次持续性灰霾天气,以处于核心污染区域的江苏省镇江市的空气污染状况为研究对象,对大气污染整体水平、各污染物的浓度状况及其相关性的分析,并结合气象参数中的风速、相对湿度、大气能见度,初步揭示此次镇江市持续性灰霾产生的主要原因是城市中汽车尾气的大量排放和持续性静稳气象条件的存在,指出当污染物排放总量超过了区域环境容量时,在适当气象条件下就会形成灰霾天气。  相似文献   
5.
Gao  Lan  He  Haonan  Wang  Shanyong  Li  Jun 《Environmental geochemistry and health》2022,44(9):3007-3020
Environmental Geochemistry and Health - Personal carbon trading (PCT) policy has been considered as an innovative and radical environmental policy tool to achieve carbon neutrality in private...  相似文献   
6.
本文报道了暗紫贝母的生态分布、植被的种类组成及其区系分析,并通过相似系数法对暗紫贝母分布的群落进行了数值分类,为川贝母的野生抚育和药材生产保护区的建立提供了依据。  相似文献   
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Facing requirements of sustainable development and tremendous international pressures, China has initiated a serious of trials for mandatory carbon trading schemes. In this study, to investigate the impact of carbon trading on commodity prices, emissions, outputs and profits of the regulated agents such as power plants in China, a partial equilibrium model is constructed based on the Cournot theory of oligopoly. Three key results were found. First, following the implementation of a carbon trading scheme there is a shift of production from plants with high emission rates to those with low rates. Second, the emission-based updating (EBU) allocation of allowable emissions would provide a buffer in which the reduced outputs and profits of plants with high emissions are alleviated. Third, if the electricity price is market oriented it will vary with the carbon price. Based on these results, we conclude that the carbon constraint will result in cleaner generating technologies and be helpful in promoting the development of low carbon technologies in China. In addition, the EBU allocation is more feasible at the beginning of the national carbon trading in China. Given that electricity prices in China are regulated now, we argue that mandatory carbon trading should be implemented at the beginning of coordinated reforms of market-oriented pricing in electricity.  相似文献   
8.
提前播种日期和增加播种密度,可增加姜黄产量27.8%。本文建立的回归方程可用于产量预测和寻找最优的栽培措施。  相似文献   
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