A forest fire can be a real ecological disaster regardless of whether it is caused by natural forces or human activities, it is possible to map forest fire risk zones to minimize the frequency of fires, avert damage, ...A forest fire can be a real ecological disaster regardless of whether it is caused by natural forces or human activities, it is possible to map forest fire risk zones to minimize the frequency of fires, avert damage, etc. A method integrating remote sensing and GIS was developed and applied to forest fire risk zone mapping for Baihe forestry bureau in this paper. Satellite images were interpreted and classified to generate vegetation type layer and land use layers （roads, settlements and farmlands）. Topographic layers （slope, aspect and altitude） were derived from DEM. The thematic and topographic information was analyzed by using ARC/INFO GIS software. Forest fire risk zones were delineated by assigning subjective weights to the classes of all the layers （vegetation type, slope, aspect, altitude and distance from r3ads, farmlands and settlements） according to their sensitivity to fire or their fire-inducing capability. Five categories of forest fire risk ranging from very high to very low were derived automatically. The mapping result of the study area was found to be in strong agreement with actual fire-affected sites.展开更多
This paper demonstrates a Geographic Information Systems （GIS） procedure of classifying and mapping forest management category in Baihe Forestry Burea, Jilin Province, China. Within the study area, Baihe Forestry Bu...This paper demonstrates a Geographic Information Systems （GIS） procedure of classifying and mapping forest management category in Baihe Forestry Burea, Jilin Province, China. Within the study area, Baihe Forestry Bureau land was classified into a two-hierarchy system. The top-level class included the non-forest and forest. Over 96% of land area is forest in the study area, which was further divided into key ecological service forest （KES）, general ecological service forest （GES）, and commodity forest （COM）. COM covered 45.0% of the total land area and was the major forest management type in Baihe Forest Bureau. KES and GES accounted for 21.2% and 29.9% of the total land area, respectively. The forest management zones designed with GIS in this study were then compared with the forest management zones established using the hand draw by the local agency. There were obvious differences between the two products. It suggested that the differences had some to do with the data sources, basic unit and mapping procedures. It also suggested that the GIS method was a useful tool in integrating forest inventory data and other data for classifying and mapping forest zones to meet the needs of the classified forest management system.展开更多
In this study, beetle communities in Jiuzhaigou, Xiaozhaizigou, Caopo, Ma＇anshan and Baihe nature reserves of Sichuan Province were compared and analyzed. F index, G index and G-F index of beetle communities in five ...In this study, beetle communities in Jiuzhaigou, Xiaozhaizigou, Caopo, Ma＇anshan and Baihe nature reserves of Sichuan Province were compared and analyzed. F index, G index and G-F index of beetle communities in five nature reserves were analyzed to calculate the similarity coefficient C between these five na- ture reserves. According to the results, beetle communities exhibited high dissimilarity between Jiuzhaigou and Xiaozhaizigou, Caopo and Jiuzhaigou, Caopo and Xiaozhaizigou, Ma＇anshan and Xiaozhaizigou, Ma＇anshan and Jiuzhaigou, Baihe and Xiaozhaizigou, Baihe and Caopo, Baihe and Ma＇anshan; beetle communities exhibited moderate dissimilarity between Ma＇anshan and Caopo, Baihe and Jiuzhaigou.展开更多
Objective:To study the effect of Baihe Dihuang Decoction in improving anxiety and its mechanism of action.Methods: Male mice were randomly divided into 5 groups: blank control group, Baihe Dihuang Decoction high, medi...Objective:To study the effect of Baihe Dihuang Decoction in improving anxiety and its mechanism of action.Methods: Male mice were randomly divided into 5 groups: blank control group, Baihe Dihuang Decoction high, medium, low-dose group and diazepam group. After continuous intragastric administration for 14 d, the behavioral test of the mouse elevated plus maze experiment and opening test was performed. The brain tissue GABA and Glu content was measured by immunosorbent assay (ELISA).Results: Compared with the blank control group, the middle and high doses of Baihe Dihuang Decoction could increase the time and frequency of movement of the mice in the open cross labyrinth in the open arm and increase the number of times that the mouse entered the central area in the opening test. The anti-anxiety effect also showed an increase in the brain tissue GABA content in mice, ignificantly decreased Glu contents in mice.Conclusion: Baihe Dihuang Decoction has some anxiolytic effect, and anti-anxiety effect may be related to increasing brain tissue GABA content, decreased Glu contents in mice.展开更多
目的:应用网络药理学方法探讨百合知母汤抗焦虑与失眠的分子机制。方法:基于中医药整合药理学研究平台(integrative pharmacology-based research platform of traditional Chinese medicine,TCMIP)V2.0对百合知母汤化学成分信息进行靶...目的:应用网络药理学方法探讨百合知母汤抗焦虑与失眠的分子机制。方法:基于中医药整合药理学研究平台(integrative pharmacology-based research platform of traditional Chinese medicine,TCMIP)V2.0对百合知母汤化学成分信息进行靶标预测,将焦虑与失眠相关疾病靶标信息进行蛋白-蛋白互作网络(protein-protein interactions,PPI)构建;富集分析百合知母汤干预焦虑、失眠的关键靶标;构建可视化的“中药方剂-中药材-化学成分-核心靶标-关键通路-疾病关键病理环节”多层次网络关联图。结果:百合知母汤有效成分主要为皂苷、黄酮、挥发油、有机酸等,百合知母汤作用潜在靶标共128个,其中与药物相关靶标14个,与疾病相关靶标114个,药物与疾病共有靶标2个,分别为NR3C1和GABRA1。百合知母汤抗焦虑与失眠主要作用于GABRA1、NFKB1、AR、SMC1A、PIK3CA、NR3C1、DRD2等基因或蛋白靶标中,涉及氨基丁酸、氯离子跨膜运输、突触后膜电位、γ-氨基丁酸的突触传递、神经元凋亡过程负调控及信号转导效应等通路。结论:百合知母汤抗焦虑与失眠的分子作用机制可能与干预GABRA1、NFKB1、DRD2等基因或蛋白表达,调控氨基丁酸、氯离子跨膜运输等通路有关。展开更多
基金The sludy was supported by a grant of the National Natural Science Foundation of China （No. 70373044 and 30470302） and National Key TechnolooiesR＆D Program （No. 2001BA510B07）
文摘A forest fire can be a real ecological disaster regardless of whether it is caused by natural forces or human activities, it is possible to map forest fire risk zones to minimize the frequency of fires, avert damage, etc. A method integrating remote sensing and GIS was developed and applied to forest fire risk zone mapping for Baihe forestry bureau in this paper. Satellite images were interpreted and classified to generate vegetation type layer and land use layers （roads, settlements and farmlands）. Topographic layers （slope, aspect and altitude） were derived from DEM. The thematic and topographic information was analyzed by using ARC/INFO GIS software. Forest fire risk zones were delineated by assigning subjective weights to the classes of all the layers （vegetation type, slope, aspect, altitude and distance from r3ads, farmlands and settlements） according to their sensitivity to fire or their fire-inducing capability. Five categories of forest fire risk ranging from very high to very low were derived automatically. The mapping result of the study area was found to be in strong agreement with actual fire-affected sites.
基金Foundation project： This research was jointly supported by the National Natural Science Foundation of China （70373044＆30470302）, China＇s Ministry of Science and Technology （04EFN216600328）, and Northeast Rejuvenation Program of the Chinese Academy of Sciences.
文摘This paper demonstrates a Geographic Information Systems （GIS） procedure of classifying and mapping forest management category in Baihe Forestry Burea, Jilin Province, China. Within the study area, Baihe Forestry Bureau land was classified into a two-hierarchy system. The top-level class included the non-forest and forest. Over 96% of land area is forest in the study area, which was further divided into key ecological service forest （KES）, general ecological service forest （GES）, and commodity forest （COM）. COM covered 45.0% of the total land area and was the major forest management type in Baihe Forest Bureau. KES and GES accounted for 21.2% and 29.9% of the total land area, respectively. The forest management zones designed with GIS in this study were then compared with the forest management zones established using the hand draw by the local agency. There were obvious differences between the two products. It suggested that the differences had some to do with the data sources, basic unit and mapping procedures. It also suggested that the GIS method was a useful tool in integrating forest inventory data and other data for classifying and mapping forest zones to meet the needs of the classified forest management system.
基金Supported by Key Project of Sichuan Provincial Department of Education(07ZA122)
文摘In this study, beetle communities in Jiuzhaigou, Xiaozhaizigou, Caopo, Ma＇anshan and Baihe nature reserves of Sichuan Province were compared and analyzed. F index, G index and G-F index of beetle communities in five nature reserves were analyzed to calculate the similarity coefficient C between these five na- ture reserves. According to the results, beetle communities exhibited high dissimilarity between Jiuzhaigou and Xiaozhaizigou, Caopo and Jiuzhaigou, Caopo and Xiaozhaizigou, Ma＇anshan and Xiaozhaizigou, Ma＇anshan and Jiuzhaigou, Baihe and Xiaozhaizigou, Baihe and Caopo, Baihe and Ma＇anshan; beetle communities exhibited moderate dissimilarity between Ma＇anshan and Caopo, Baihe and Jiuzhaigou.
文摘Objective:To study the effect of Baihe Dihuang Decoction in improving anxiety and its mechanism of action.Methods: Male mice were randomly divided into 5 groups: blank control group, Baihe Dihuang Decoction high, medium, low-dose group and diazepam group. After continuous intragastric administration for 14 d, the behavioral test of the mouse elevated plus maze experiment and opening test was performed. The brain tissue GABA and Glu content was measured by immunosorbent assay (ELISA).Results: Compared with the blank control group, the middle and high doses of Baihe Dihuang Decoction could increase the time and frequency of movement of the mice in the open cross labyrinth in the open arm and increase the number of times that the mouse entered the central area in the opening test. The anti-anxiety effect also showed an increase in the brain tissue GABA content in mice, ignificantly decreased Glu contents in mice.Conclusion: Baihe Dihuang Decoction has some anxiolytic effect, and anti-anxiety effect may be related to increasing brain tissue GABA content, decreased Glu contents in mice.
文摘目的:应用网络药理学方法探讨百合知母汤抗焦虑与失眠的分子机制。方法:基于中医药整合药理学研究平台(integrative pharmacology-based research platform of traditional Chinese medicine,TCMIP)V2.0对百合知母汤化学成分信息进行靶标预测,将焦虑与失眠相关疾病靶标信息进行蛋白-蛋白互作网络(protein-protein interactions,PPI)构建;富集分析百合知母汤干预焦虑、失眠的关键靶标;构建可视化的“中药方剂-中药材-化学成分-核心靶标-关键通路-疾病关键病理环节”多层次网络关联图。结果:百合知母汤有效成分主要为皂苷、黄酮、挥发油、有机酸等,百合知母汤作用潜在靶标共128个,其中与药物相关靶标14个,与疾病相关靶标114个,药物与疾病共有靶标2个,分别为NR3C1和GABRA1。百合知母汤抗焦虑与失眠主要作用于GABRA1、NFKB1、AR、SMC1A、PIK3CA、NR3C1、DRD2等基因或蛋白靶标中,涉及氨基丁酸、氯离子跨膜运输、突触后膜电位、γ-氨基丁酸的突触传递、神经元凋亡过程负调控及信号转导效应等通路。结论:百合知母汤抗焦虑与失眠的分子作用机制可能与干预GABRA1、NFKB1、DRD2等基因或蛋白表达,调控氨基丁酸、氯离子跨膜运输等通路有关。
