长兴县煤山镇矿山复绿及景观再现研究

分析长兴县煤山镇矿山复绿及景观再现所采取的措施，主要是坡体采用生态石笼护坡技术，边坡挂网技术和混合喷播技术；石壁采用喷混植生技术。引入适宜矿山复绿的植物品种，并借鉴国外相关领域的成功经验，结合矿山的实际情况，尽可能的形成生态景观，以求获得最大的生态效益、社会效益和景观效益。     

机关企事业单位附属绿地规划设计研究

本文以城市绿地系统规划理论为基础,以陕西机关企事业单位的绿地规划为对象,探讨了公共事业庭院绿地规划设计的原则;公共事业庭院附属绿地典型区域规划设计的原则、方法与植物配置,为构建陕西事业单位绿地景观的可居、可行、可游、可赏提供决策依据。     

保定市耕地整理高效运行机制构建

通过对保定市2002—2010年耕地资源数据和国民生产总值数据进行分析,得出耕地资源供需矛盾突出是摆在当前的重要难题,耕地整理作为增加耕地面积的有效途径引起广泛关注。在此基础上,进一步探索了耕地整理中存在的问题并有针对性的构建了耕地整理的高效运行机制。     

Effects of Salinity and Soil–Drying on Radiation Use Efficiency,Water Productivity and Yield of Quinoa (Chenopodium quinoa Willd.)

Drought and salinity reduce crop productivity especially in arid and semi‐arid regions, and finding a crop which produces yield under these adverse conditions is therefore very important. Quinoa (Chenopodium quinoa Willd.) is such a crop. Hence, a study was conducted in field lysimeters to investigate the effect of salinity and soil–drying on radiation use efficiency, yield and water productivity of quinoa. Quinoa was exposed to five salinity levels (0, 10, 20, 30 and 40 dS m^?1) of irrigation water from flower initiation onwards. During the seed‐filling phase the five salinity levels were divided between two levels of irrigation, either full irrigation (FI; 95 % of field capacity) or non‐irrigated progressive drought (PD). The intercepted photosynthetically active radiation was hardly affected by salinity (8 % decrease at 40 dS m^?1) and did not differ significantly between FI and PD. Radiation use efficiency of dry matter was similar between salinity levels and between FI and PD. In line with this, no negative effect of severe salinity and soil–drying on total dry matter could be detected. Salinity levels between 20 and 40 dS m^?1 significantly reduced the seed yield by ca. 33 % compared with 0 dS m^?1 treatment owing to a 15–30 % reduction in seed number per m², whereas the seed yield of PD was 8 % less than FI. Consequently, nitrogen harvested in seed was decreased by salinity although the total N‐uptake was increased. Both salinity and drought increased the water productivity of dry matter. Increasing salinity from 20 to 40 dS m^?1 did not further decrease the seed number per m² and seed yield, which shows that quinoa (cv. Titicaca) acclimated to saline conditions when exposed to salinity levels between 20 and 40 dS m^?1.     

Reshaping women's land rights on communal rangeland

This paper aims to contribute to the debates on communal rangelands and analyses the gendered dimension of land rights and land access in the rural areas of Namaqualand. The actual gender relations within rural communities and the emergence of strategies that are being pursued in communal land processes are obscured and often ignored in policies about communal rangelands, which overemphasise ‘the ecological and economic impact’ and the balancing of these dimensions. As active, primary users, women play a central role in livelihoods supported by communal rangelands yet their access to land is mediated through their relationships with men, effectively circumventing women's land autonomy. A wider debate is necessary to advance the largely superficial policy considerations of women's position in relation to communal rangelands land and their social exclusion on the basis of traditional control of land, forms of access and claiming of use rights. The paper discusses the complexity of land rights under communal land tenure and argues that, despite traditional and policy barriers, women in traditional systems of male-dominated land rights have had some success in accessing communal rangelands. Greater policy impetus is necessary to leverage equitable and independent land access for women amidst debates about management of communal rangelands.     

陕北半干旱区土地资源利用与修复的研究

长城沿线风沙地是由种植农作物和饲养家畜结合一起的农牧业生产系统。在进行生产的过程中，常因生产系统的紊乱而导致土地生产下降和生态环境恶化，为了探讨这一地区土地资源的合理配制，线建有有序的生产结构，达到土地持续利用的目的，在１９９０～１９９４年在陕西靖边长城和沿线选择１１０．６ｈｍ＾２的风沙地，设置了４个区进行了专门的研究，结果表明，在作物和牲畜结合在一起的农业生产系统中，当牧业收入占种植业和饲养业总     

山西平朔ATB矿退化土地的林业复垦与生态重建研究

采用调查、类比、室内模拟和野外试验示范相结合的方法，１９８７年－１９９９年在山西平逆ＡＴＢ矿进行了林业复垦与生态重建研究，结果表明。该矿生态系统演谱分为生态系统破损阶段、生态系统雏形建立阶段和生态系统动脉平衡阶段；生态受损引发因子包括土地挖损、土地压占、土地占用和土地污染；生态重建的实质为林业复垦基础工程的再造与植被重建工程的实施；生态重建的关键技术包括排土场的设计、有毒物质的消除、黄土的覆盖、侵蚀的控制、植物筛选与配置；重建后的生态优于采矿前的原生态。     

Reviews

Books reviewed: Ben Burt and Christian Clerk (eds), Environment and development in the Pacific Islands Glenn Banks and Chris Ballard (eds), The Oki Tedi Settlement – issues, outcomes and implications Bill Gammage, The Sky Travellers: journeys in New Guinea 1938–1939     

桓台县土地可持续生产的限制因素及对策

对桓台县限制粮田土地可持续生产的因素进行了分析，指出了土壤养分失衡，部分肥力性状弱化以及可能的氮素污染和某些持续性的难以有效应用等将可能成为土地持续生产的限制因素，并提出了相应的改进对策。     

“三生空间”相互作用视域下的南京市溧水区乡村宜居性评价

生产、生活、生态空间是乡村人居环境系统的3个子系统，快速城镇化地区乡村“三生空间”的相互作用明显，为探索“三生空间”相互作用对乡村宜居性的影响，该研究以南京市溧水区为例，综合运用熵权法、线性加权法和ArcGIS空间分析方法，基于土地利用和兴趣点数据构建乡村“三生空间”分类指标体系识别溧水区“三生空间”，考虑“三生空间”功能及其相互作用建立乡村宜居性评价体系，分析2010和2018年溧水区乡村宜居性水平及其变化。结果表明：1）2010、2018年溧水区乡村“三生空间”中生产空间面积均占优势，生态空间次之，生活空间面积最小，8 a间乡村生活空间面积增加，生产和生态空间面积下降；2）2010和2018年溧水区乡村宜居性水平总体不高，且平均分值8 a间略有下降。2010年宜居性高值和低值区分别在和凤镇和白马镇，2018年则分别在永阳镇和东屏镇。8 a间永阳镇乡村宜居等级上升，东屏镇和石湫镇乡村宜居等级则下降；3）与未考虑“三生空间”相互作用的乡村宜居性评价结果相比，“三生空间”相互作用视域下的评价结果更符合当地实际，各镇应根据自身情况提升其宜居性水平。研究结果能够为溧水区提升乡村人居环境、推进乡村振兴提供参考。