GIS在生态土地分类中的作用

This paper depicted the physiographic landscape features and natural vegetation situation of study area (the eastern Jilin Province), and expatiates the definition, basic characters and its development of Ecological Land Classification (ELC). Based on the combination of relief map, satellite photography for study area and vegetation inventory data of 480 sample sites, a 5-class and a 15-class ecological land type map was concluded according to 4 important factors including slope, aspect, vegetation and elevation. Ecological Classification System (ECS) is a method to identify, characterize, and map ecosystems. The Ecological Land Type (ELT) was examined and applied initially in eastern Jilin Province. Foundation item: This paper was supported by Chinese Academy of Sciences “100 people” project and the Open Research Station of Changbai Mountain Forest Ecosystem. Biography: XIAO Bao-ying (1974-), female, postgraduate in Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P. R. China Responsible editor: Zhu Hong     

The Application of GIS in Small Watershed Classification in Loess Plateau

ＴｈｅＡｐｐｌｉｃａｔｉｏｎｏｆＧＩｓｉｎＳｍａｌｌＷａｔｅｒｓｈｅｄＣｌａｓｓｉｆｉｃａｔｉｏｎｉｎＬｏｅｓｓＰｌａｔｅａｕＺｈｕＪｉｎｚｈａｏ，ＷｕＢｉｎ，ＢｉＨｕａｘｉｎｇ，ＺｈｏｕＣｈａｎｇｑｉｎｇＣｏｌｌｅｇｅｏｆＳｏｉｌａｎｄＷａｔｅｒＣ...     

苎麻／涤Sirofil纱的性能研究

对苎麻/涤Sirofil纱的性能进行了研究，并与苎麻环锭纱、Siro纱、包芯纱、plyfil纱进行了比较。结果显示，苎麻/涤Sirofil纱的性能要优于对照纱。     

商品林分类指标体系的研究

在综合分析影响商品林经营的社会、经济、自然、生态、法律等因子基础上 ,提出商品林分类标准和指标体系 ,并以山西管涔林业局杜家村林场为例 ,验证商品林分类指标 ,为商品林建设提供依据     

江苏毛竹林生产力类型区的划分及分析

根据毛竹生产力和环境指标将江苏省毛竹林区划分出高生产力、中生产力、一般生产力和低生产力类型区,并分析了各类型区的主要特点。同时,提出了各类型区的经营发展方向。     

Quantitative site classification in the key county in the conversion of farmland to forests project

According to the requirements of the conversion of farmland to forests project (CFFP), we investigated the vegetation factors and environmental factors from more than 6,105 sub-compartments in Liangcheng County, Inner Mongolia by using the Matlab, analytic hierarchy process (AHP), and the hierarchical cluster method (HCM). The site conditions were classified quantitatively. The results show that CFFP at this site comprises five site-type groups and 19 site types. A quantitative site classification system method has been established in this paper. __________ Translated from Journal of Beijing Forestry University, 2005, 27(6) [译自: 北京林业大学学报, 2005, 27(6)]     

农用地因素法与样地法分等对比研究——以重庆市丰都县为例

对现行《农用地分等规程》中因素法和样地法进行探讨，寻求农用地分等的最佳方法。文献资料法、比较分析法。《规程》中因素法分等使得研究区单元分值出现拐点，划分等别部分与实际不符；样地法分等结果则不存在这一问题。在农用地分等中，在县域内种植制度为一年两熟和一年一熟的地区采用样地法分等更合理。     

实验猴志贺氏菌检出、血清分型及药物敏感性试验

采用实验动物国家标准(GB/T 14926.47-2001)的检验方法,对144份待出口实验猴粪便样品检测,检出志贺氏菌2株,阳性检出率1.39%。血清学分型,均属于B群志贺氏菌,血清型分别为X变种和Y变种。药敏试验结果表明,2株分离菌对先锋V、氟哌酸和环丙沙星高度敏感,而对青霉素、红霉素和复方新诺明耐药。     

湖南高品质棉研究进展与发展对策

根据国家将长江中下游棉区定位为50￣60支纱生产基地的区划要求,分析国内外及湖南棉区高品质棉的研究现状及发展前景,并针对限制湖南高品质棉发展的“瓶颈”因素提出了加强纺织技术改造,是当务之急,创造与引进优异新种质新材料、遗传品质改良工程,优异纤维品质的基因工程是根本途径,加速新品种选育是重中之重。     

小麦远缘杂交后代节燕98-2分离类型贮藏蛋白的研究

采用A-PAGE和SDS-PAGE聚丙烯酰胺凝胶电泳方法,对远缘组合分离出来的节燕98-2类型入选11个遗传性基本稳定的具有高产、多抗的小麦株系的醇溶蛋白和高分子量谷蛋白亚基进行了分析.结果表明,在A-PAGE电泳分析中,11个供试株系具有11种不同的醇溶蛋白带型.在SDS-FAGE电泳分析中,出现了7种不同的高分子量谷蛋白亚基(HMW-GS)及6种亚基组合类型,优质亚基及亚基组合所占的比例较少,品质评分偏低,其变幅为5～8分,平均为6.36分.但在所分析的材料中,出现了一个少见的特殊亚基:2 10 12.并研究了这些HMW-GS和组合频率及特点.11个株系中7个具有45 10优质亚基和2个具有2*亚基,它们可供小麦优质育种利用.研究表明,通过远缘杂交能够选育出具有高产、抗病和优质的小麦新材料.