现代农业思潮与农业生态环境保护

通过对各类现代农业思潮的产生背景，思想出发点以及所倡导实施的技术体系的分析，阐述了现代农业思潮的实质是人类环保意识的觉醒，是人们对现代常规农业反思的结果，并指出现代农业思潮有深刻的思想根源。     

无公害农业与合理施肥

滥施肥料是造成环境污染、农产品质量下降的原因。施用化肥与无公害农业并不矛盾，无公害农业更需要优质的化肥。化肥在无公害农业中的作用是不可替代的。只要科学地选择肥料和科学地施用肥料，使有机肥料与化肥有机地结合，使营养元素全面而平衡，不但不会对环境带来污染，而且能改善土壤微生态环境和人类的生存环境，提高农产品的产量和质量，有益于人类的健康。     

Measuring sustainability

An agricultural system is sustainable if productive output is maintained economically over time when assessed in relation to environmental concern. This paper considers ways of statistically evaluating measures of sustainability illustrated by reference to extensive data from the Classical Experiments at Rothamsted.     

外来有害生物风险评估技术

概述了有害生物风险分析的概念、必要性、生物学基础和一般程序 ;论述了生态气候图、农业气候相似距库、生态气候评价的分析模型、地理信息系统、专家系统、基于定性分析与定量估算相结合的数学模型等有害生物风险分析技术的原理和特点 ;认为应用网络技术 ,建立基于分布式计算的全球入侵物种风险评价数据体系 ,可有效提高风险评价的速度和准确性。     

Estimation of the surface stress from the streamwise pressure gradient: The Kármán Integral Momentum Equation revisited

A method is developed to estimate the stress at the surface in a portable wind tunnel for wind erosion studies. The boundary layer height and the pressure gradient are used in a simple expression from the Kármán Integral Momentum Equation. Values of friction velocity u _* are within 10% of experimental values obtained through correlation techniques, including measurements of differential pressures with the Murdoch Turbulence Probe MTP and the X-wire, hot-wire anemometer XWA. Wind velocity and stress profiles reveal logarithmic trends and a constant stress layer near the surface in the DAWA portable wind tunnel. Realignment of the statistics with the mean wind is essential.     

试论肥料对农业与环境的影响

以肥料的发展先后，将肥料的发展历史分为有机时代、无机时代和有机无机复合时代；论述肥料对农业和环境的影响，并对未来肥料的发展提出预测和展望。从长远的发展来看，生物肥料不仅可以节省自然资源，而且还可在有机无机复合肥和控释肥料的基础上，以有机复合肥作为基质，利用控释肥料的包膜剂、粘着剂等进行生物肥料优化组合；可以说生物复合肥料将是未来肥料发展的主流。可以预料，未来肥料是实现清洁生产、物质循环、持续发展的中心环节。它不仅可以消纳转化上农业生产和现代生活所产生的废物，而且它所投入的有机复合肥，也是一种对环境友好的绿色肥料。     

云龙水库水源区生态环境建设初探

要实现云龙水库水源区良好的生态环境,必须调整水源区的产业结构,建设水源区以林为主,林、农、牧、副结合的生态农业.     

关于农业污染纠纷综合处理的思考

本文揭示了农业污染纠纷的内涵，提出处理农业污染纠纷要运用农业技术先行界定，运用监测数据科学鉴证，运用因果关系逻辑推定，同时强化环境管理，疏通综合处理渠道等。     

我国农业生态旅游可持续发展探讨

从生态旅游的角度阐述了我国农业生态旅游发展状况和特征，综合分析了影响我国农业生态旅游可持续发展的一系列问题，并针对这些问题提出了发展农业生态旅游的建议和措施。     

Public Perceptions of California's Exceptional Drought

While the exceptional drought in California ended in 2017, the state is expected to experience similar droughts in the future. Understanding how individuals perceive the causes and consequences of drought will help frame future communication and planning efforts. We surveyed a panel of Californian residents about their perceptions of the 2012–2017 drought. We found a major disconnect in how our respondents perceived drought and water use. Respondents perceived the drought as being caused primarily by climatic factors and underestimated the role human water use, particularly agricultural use, had in exacerbating drought. Comparing our respondents across the state and across socio‐demographics, there were few differences in concern about drought but several differences in how residents thought drought should be managed. Such research can help water managers communicate about the specific concerns the public has about future droughts, as well as address misperceptions about the relationship between drought and water use.