Structural Adjustment of Oasis Agriculture in Xinjiang

As a special basic economic region in China, Xinjiang is situated in the arid area in the Northwest China. Oasis agriculture is the basis of the national economy. The development of oasis agriculture helps to accelerate the development of economy, social and environment. After 50 years of practice, from 1949 to 2002, oasis agriculture in Xinjiang enhanced rapidly the scale of agricultural industry and had great changes in its structure. The amount of cultivated area rose from 120.97*102 ha t…     

关中地区飑线天气的预测及灾害对策探讨

对１９６１～１９９０年发生在陕西省关中地区的飑线天气及其灾害进行了统计分析，并从天气形势背景方面对飑线的发生发展进行了研究和分析，同时就飑线的预测和防灾对策进行了探讨。     

论土地持续利用

在世界上有两种可持续发展思路，一种是西方发达国家的重保护的可持续发展思路；一种是以发展为前提，保护自然资源的可持续发展思路。土地持续利用的思想是在可持续发展的进程中不断发展的。我国要保证土地持续利用，满足未来对食粮和建设的需求，应建立起同土地持续利用相适应的土地持续利用制度和土地持续利用机制     

Evolution and reconstruction of settlement space in tourist islands: a case study of Dachangshan Island,Changhai County

Environment, Development and Sustainability - This study analyzes the evolution of the land use structure, demographic reconstruction, and social reconstruction of Dachangshan Island, Changhai...     

Study on cooperative strategies of rural water environment governance PPP project between companies and farmers from the perspective of evolutionary game

Environment, Development and Sustainability - The PPP mode of rural water environment governance was conducive to attracting social capital for giving full play to the decisive role of the market...     

Effects of Different Litter Treatments on Seed Germination and Seedling Growth of Pinus densata in Southeast Tibet,China

Russian Journal of Ecology - The aim of this study is to explore the effects of the litter cover thickness and cleaning methods on seed germination and seedling growth of Pinus densata. The overall...     

Evaluation and analysis of heavy metals in iron and steel industrial area

Environment, Development and Sustainability - Heavy metal pollution has attracted more attention due to the toxicity and migration characteristics, which has close relationship with soil...     

蚯蚓对城镇污泥堆肥过程中微型动物群落演替的影响

采用实验对比和除趋势对应分析（DCA）等方法,以城镇污泥中的微型动物为对象,研究蚯蚓对堆肥过程微型动物群落演替的影响.结果表明,蚯蚓仅影响微型动物群落数量,对演替进程无明显影响.堆肥过程微型动物群落演替可分为3个阶段：第1阶段（0~10 d）,固着类纤毛虫为优势类群阶段,该阶段微型动物变化多受限于环境的改变,蚯蚓影响较小;第2阶段（10~30 d）,固着类纤毛虫和轮虫向肉足虫和线虫为优势类群的过渡阶段,该阶段蚯蚓对线虫数量有一定的限制;第3阶段（30 d后）,肉足虫和线虫为优势类群阶段,该阶段蚯蚓对有壳肉足虫的增长产生了明显的抑制作用.群落多样性指数结果显示,蚯蚓在第1和第2阶段作用不明显,在第3阶段增加了微型动物的多样性和均匀度,减小了优势物种的优势程度.对固着类纤毛虫的同化作用是蚯蚓稳定堆肥环境、促进有机质降解的重要因素.