土壤

Regional development occupies large land, develops lots of contents, relates to multifields including industry, construction, business and civicism, so it is necessary to identify its influence on nature environment such as air, groundwater quality, surface water quality and hydrological condition, sound, soil, plants, topographty and social environment such as population, traffic, economic structure. The countermeasures of carring through circular economy, controlling pollution sources, planning industrial structure scientifically, distributing reasonably, implementing cleaner production and total quantity control should be taken to promote regional sustainable development.

区域开发具有较大的不确定性，并且占地面积大、开发的内容广、性质复杂、建设周期长，通常的区域开发都有可能涉及到工业、城建、商业、人居、市政等多个领域的开发活动，所以区域开发必须结合区域开发的特征，准确识别其可能对区域内及其周边的空气环境、地下水质量、地表水水质及水文条件、声环境、土壤、植被、地形地貌等自然环境和人口、交通、经济结构等社会环境等产生的影响，并采取发展循环经济，减少污染生成的源头控制措施；科学规划产业结构，合理布局的预防性措施；源内达标、区域集中控制的污染治理措施；实施清洁生产、总量控制，推进区域环境与经济的持续发展。

Key words 〗 Ultrasonic extraction; Semi volatile organic compounds ; Soil; Methylene dichloride; Soxhlet extraction

关键词〗超声波萃取；半挥发性有机物；土壤；二氯甲烷；索氏提取

The journal publishes original scientific articles, reviews and short communications dealing with all aspects on production and health in plants and animals, as well as rural development, such as genetics, breeding, organic, biological agriculture and sustainable production systems, apiculture, aquaculture, forages and pastures, plant and animal diseases, pests and weeds, epizootiology, immunology, parasitology, physiology, reproduction, management and food technology, natural and genetic resources, agricultural economics, rural engineering and mechanization, soils, fertilization, irrigation and watering, etc.

杂志刊载原始科学文章，评论和短通讯，内容涉及植物和动物生产和健康，以及农村发展的所有方面，例如遗传学，育种，有机农业，生物学农业和可持续生产系统，养蜂，水产业，草料和牧场，植物和动物疾病，害虫和杂草，动物流行病学，免疫学，寄生虫学，生理学，繁殖，管理和食品技术，自然和遗传资源，农业经济，农村工程和机械化，土壤，施肥，灌溉和浇水等。

In Enshi autonomy prefecture, selenium rich to collect in rock, soil, animals and plants and up to the first in the world, it has brought evangel for people of more than 70% areas in the world which is short of selenium.

"恩施自治州岩石、土壤、动植物硒富集均达到世界之最"，为世界70%以上缺硒地区的人类带来了。

The Yellow River course shifts and subdelta formation are analyzed first, and the finger-shaped geomorphology system caused by the river course shifts is also analyzed systemically. The environmental factors such as meteorology, hydrology, DEM , vegetation, soil, soil salt content, and exploitation are all described and discussed.

综合分析了1855年以来黄河流路变迁和亚三角洲的发育演化，以及在此控制之下形成的三角洲指状骨架地貌体系；对黄河三角洲的气象、水文、地形、植被、土壤、含盐量等环境背景特征以及人类开发活动进行了深入探讨和分析。

The developing process about establish the model of earth surface and several classical methods, which are the methods of radiative transfer, geometric optics, hybrids of two or more of these, and numerical simulation are discussed in detail.

较详细地论述了建立地物散射模型的发展情况和几种典型方法：辐射传输方法、几何光学方法、复合模型方法以及数值模拟方法等，初步研究了适用于植被、土壤、沙漠等环境背景的双向反射分布函数模型。

Keywords soil;copper;forest type;heavy metal;physical and chemical property;adsorption;affecting factor

土壤；铜；林分类型；重金属；理化性质；吸附作用；影响因素

Hippocrates cautioned that pure water, soil and air are necessary for health.

希波克拉底提醒说：纯净的水，土壤，空气对于健康至关重要。

Sold as inexpensive 14-0-45 fertilizer, used to increase the nitrate level of soil, and for hydroponics usage.

出售廉价的14-0-45肥料，用于增加硝酸盐的水平，土壤，水栽法和用法。

The most alarming of all man's assaults upon the environment is the contamination of air, earth, rivers, and sea with dangerous and even lethal materials. This pollution is for the most part irrecoverable.

在人类损坏环境的种种行动中，最令人担心的是人类向大气、土壤、河流以及海洋中排放危险甚至致命物质，而当今这种污染在很大程度上是无法拯救的。

The network space is the typical form of abstract space when it comes to the digital stage.

网络空间是抽象空间数字化阶段的典型形式。

The Notarial System,as the system of judicial certification in our country,is both the constructor and the defender of social credit system,It has its special value and function in the social honesty.

公证制度作为我国司法证明制度，既是社会信用体系的建设者，同时也是社会信用的捍卫者，在诚信中有其特殊的价值和功能。