日本落叶松在滇东北造林适应范围分析

本文根据滇东北地区的气候特点以及土壤特点,结合日本落叶松的生物学特性,对其在滇东北造林的适应范围进行了分析,以期为日本落叶松在滇东北地区的造林栽培起到指导性作用。     

余甘子资源植物的研究与开发进展

从开发天然功能保健食(药)品的角度,总结了分布于我国南方各省的资源植物余甘子(滇橄榄,Phyllanthus emblica)的生物学、植物地理学、传统草药学、药理学、植物化学等的研究与开发进展,包括作者实验室近年开展的有关余甘子果汁澄清和果酒"去沉淀"的微生物酶法加工技术部分内容,以及引人关注的余甘子果植物多酚提取物及其在美白护肤品新用途的开发,讨论了金沙江干热河谷地域余甘子农业栽培的可行性.最后展望了余甘子这种药食两用资源植物的应用前景及研究与开发趋势.     

清洁生产是振兴东北老工业基地必由之路

结合振兴东北老工业基地的国策 ,从东北现状、技术改造、资源生态、政策导向、鲁尔区的改造启示五个方面进行了分析 ,提出了一些关于如何振兴老工业基地的对策建议。     

东北区夏季低温冷害的长期预报

利用东北区三大站(沈阳、长春、哈尔滨)50年(1951-2000年)夏季平均气温、前冬和夏季500hPa高度场、距平场及副高面积指数和海温场资料,对东北夏季低温冷害的环流特征进行了分析,建立了东北区夏季低温冷害预报模式;用春季高度距平平均场建立了夏季低温冷害天气预报模型。结果表明,东北区低温冷害与冬季副高面积指数及500 hPa乌拉尔山附近的高度值呈正相关,与冬季西风漂流区附近(40°~45°N,160°~150°N)海温场呈反相关;所建方程及模式预报拟合率和预报准确率都比较高,且可提前3个月左右进行预报。     

东北老工业基地现状综合评价

东北老工业基地是我国最重要的老工业基地,振兴战略提出后,东三省的经济、社会和环境都会得到相应的发展。为了便于振兴战略更有效的实施,检验战略实施后的成效,需对现状进行综合评价。基于此,本文采用相对综合评价法,对东三省的经济、社会、资源和环境进行综合评价,对比与小康水平的差距,查找主要问题。     

Spatial Autocorrelation Analysis on Regional Economic Disparity of Northeast Economic Region in China

Popular regional inequality indexes such as variation coefficient and Gini coefficient can only reveal overall inequality, and have limited ability in revealing spatial dependence or spatial agglomeration. Recently some methods of exploratory spatial data analysis such as spatial autocorrelation have provided effective tools to analyze spatial agglomeration and cluster, which can reveal the pattern of regional inequality. This article attempts to use spatial autocorrelation at county level to get refined spatial pattern of regional disparity in Chinese northeast economic region over 2000-2006 （2001 absent）. The result indicates that the basic trend of regional economy is an increasing concentration of growth among counties in northeast economic region, and there are two geographical clusters of poorer counties including the counties in western Liaoning Province and adjacent counties in Inner Mongolia, poorer counties of Heihe, Qiqihar and Suihua in Heilongjiang Province. This article also reveals that we can use the methods of exploratory spatial data analysis as the supplementary analysis methods in regional economic analysis.     

坏消息

我国怒江金丝猴可能仅存300只已极度濒危中国科学院昆明动物研究所近日发布消息称,科研人员通过DNA检测、比对和分析,首次在分子水平上肯定了怒江金丝猴作为世界第五种金丝猴在我国的存在。在此之前,世界上公认的金丝猴有川金丝猴、滇金丝猴、黔金丝猴和越南金丝猴四种,其中前三种都分布在我国境内。     

基于价值评估的川滇生态屏障区生境质量时空演变及其影响因素

重要生态功能区肩负着维持生态系统循环和保护生物多样性的重任,揭示重要生态功能区生境质量的时空演变特征及影响因素对维护区域生态安全、促进人与自然和谐发展具有重要意义。综合生态系统服务价值、生境活力和生境威胁构建生境质量评估模型,对2000—2018年川滇生态屏障区生境质量进行分析,并运用地理探测器模型揭示其影响因素。结果表明：(1)2000—2018年川滇生态屏障区生境质量整体水平持续上升,上升区域主要分布在研究区南部;生境质量等级以中等、较高和较低为主,生境质量等级转移变化以较低转为中等和中等转为较高为主。(2)2000—2018年川滇生态屏障区生境质量稳定发展区域面积占比(45.97%)>生境质量向好发展区域面积占比(43.46%)>生境质量向差发展区域面积占比(10.57%),建议重视生境质量向差发展区域,避免生境质量进一步恶化。(3)2000—2018年川滇生态屏障区生境质量演变过程主要受高程、气温、地形起伏度和距水域距离等自然因子的影响,但人口密度、GDP、距城镇距离和夜间灯光强度等人为因子的影响程度也在不断增强。与此同时,自然因子与人为因子的交互影响程度大于单因子...     

Dynamics of dissolved organic carbon in the mires in the Sanjiang Plain, Northeast China

Mires in boreal area had proved to be an important dissolved organic carbon (DOC) reserve for the sensitivity to climate change and human interfering. The study was focused on the temporal and spatial dynamics and controlling factors of DOC in a seasonallywaterlogged mire (SLM) and perennially-waterlogged mire (PLM) in the Sanjiang Plain, Northest China. In the two mires, DOC concentrations in both surface water and upper soil strata experienced pronounced seasonal variation. DOC concentrations in the surface waters were the greatest and averagely was 47.82 in SLM and 34.84 mg/L and PLM, whereas that in soil water at 0.3-m depth had little di erence (20.25 mg/L in SLM and 26.51 mg/L in PLM). Results revealed that DOC concentrations declined 5–8 times vertically from the surface down to groundwater. DOC in the groundwater only was in a very small part with the average concentration of 5.18 mg/L. In relation to the surface water, DOC concentrations varied positively with temperature just before 8 August, and only in early spring and later autumn DOC concentrations exhibited identifiable spatial trends along with standing water depths in PLM. It was supposed that the influences from standing water depth took e ect only in conditions of low temperature, and temperature should be the most powerful factor controlling DOC dynamics in the mires. Redox potential (Red) showed negative relationship with DOC values while total nitrogen (TN) and the majority of free ions in the soil solution exhibited no relationship. High soil TOC/TN ratio and low redox potentials also led to DOC accumulation in the mires in the Sanjiang Plain.     

滇东北乐红铅锌矿床地质特征及找矿远景

乐红铅锌矿自20世纪50年代以来就有多家地勘单位先后进行过普查找矿,均以"层控"观点为指导没有进展而中途下马,90年代后期,云南第一地质大队以"构控"新思路开展新一轮找矿,获得突破性进展。在研究区域成矿地质背景、矿床地质特征及控矿地质因素的基础上,认为矿床为受断裂构造控制的热液充填交代型铅锌(银)矿床,并根据控矿断裂特征及成矿地质条件,指出乐红矿区及外围具有形成大型矿床的找矿远景,应该加强该区的地质找矿工作。