This paper describes Mammalian fossils of 18 species discovered at Donghuangzhuang,about 15 km from NE of Qufu county,Shandong Province.The materials were collected bya farmer in 1984 and were sent to The Shandong Pro...This paper describes Mammalian fossils of 18 species discovered at Donghuangzhuang,about 15 km from NE of Qufu county,Shandong Province.The materials were collected bya farmer in 1984 and were sent to The Shandong Provincial Museum for studing.A short fieldinvestigation was made by Wang Jinwen,Sha Yesue(BGMRSD),Han Qingwen(SDM)andthe present author in same year.The age of the fauna is tentatively considered as the late Late Eocene,probably correlatedas the Heti Fauna(Yuanqu Basin).It represents the first occurrence of Late Eocene fossils inthis province.展开更多
Tumen region is situated in the northwest of Yiyuan county, Shandong province, about 130 km to the east of Jinan city, the province captial. The geographical coordinates are 118°33′E longitude and 36°04′N ...Tumen region is situated in the northwest of Yiyuan county, Shandong province, about 130 km to the east of Jinan city, the province captial. The geographical coordinates are 118°33′E longitude and 36°04′N latitude. The modern climate is a warm temperate monsoon forest type, with annual mean temperature of 13℃ and annual mean precipitation of 767 mm . The aridity is 11-- 3.0. So this region is the transitional environment between semiarid and展开更多
The mineralogical features of the oxidation-reduction of graphite deposit in pingdu, Shandong province were studied by field search, polarization microscope, X-ray diffraction (XRD) and SEM. The results show that, the...The mineralogical features of the oxidation-reduction of graphite deposit in pingdu, Shandong province were studied by field search, polarization microscope, X-ray diffraction (XRD) and SEM. The results show that, the major rocks of the reduction graphite zone are graphite-quartz anorthosite, gabbro. The major rocks of the oxidation graphite zone are marble with graphite, biotite granite, monzogranite. The main minerals of the reduction zone are plagioclase, pyroxene, quartz, pyrite. The graphite is aphanitic graphite appearing as dense massive, layered, spherical aggregates. The main minerals of the oxidation zone are calcite, quartz, K-feldspar, biotite, amphibole, chlorite. The graphite is flake graphite uniformly dispersed in the loose, and strongly erosion rocks. A large number of rocks in the area have been suffered chloritization, regional metamorphism, indicating that the formation of the graphite deposit should be related with gabbro melting. The carbon source in the lower part was taken into the mine, and then experienced regional metamorphism.展开更多
Income inequality among farmers living in different regions was an important form of territorial inequalities. Studying the territorial inequality of the net income per peasant was an emphasis of this paper, and Shand...Income inequality among farmers living in different regions was an important form of territorial inequalities. Studying the territorial inequality of the net income per peasant was an emphasis of this paper, and Shandong Province was pointed as the case study region. By the help of logistic regression, it could be found that the special distribution of the net income per peasant in Shandong Province was affected by three factors： distance to No.308 National Highway, distance to the coastline in the east of Shandong Province, and urbanization rates. Based on the decomposition of Gini index, the net income per peasant was divided into four parts, and it was found that the income from family business and salary were the two major sources of income. As to the mechanism for income inequality, it was proved that urbanization was still the key factor. In order to reduce income inequality, the local governments should promote urbanization through improving road networks, such as building highways, which could connect rural areas with the major nodes such as big cities and the port cities in the east.展开更多
山东北部沿海平原区小麦-玉米周年两吨粮超高产技术创建是中国农业大学作物化控团队和莱州市金海种业在山东省莱州市开展的一项重要农业生产示范项目。通过精选良种、合理密植及水肥一体化等措施,以期实现小麦和玉米的高产高效种植。在2...山东北部沿海平原区小麦-玉米周年两吨粮超高产技术创建是中国农业大学作物化控团队和莱州市金海种业在山东省莱州市开展的一项重要农业生产示范项目。通过精选良种、合理密植及水肥一体化等措施,以期实现小麦和玉米的高产高效种植。在2023年该地块小麦和玉米两季的种植中,现场实测每公顷的总产量达到了31,323.90 kg(折合2088.26 kg mu^(-1))。其中冬小麦由农业农村部组织专家测产打破了黄淮海地区小麦的单产纪录,实际产量高达13,213.35 kg hm^(-2)(折合880.89 kg mu^(-1))。种植品种烟农1212每平方米穗数为692.0,穗粒数为40.1,千粒重为52.55 g,单株产量为4.74 g,收获指数为0.56,水分利用效率为3.24 kg m-3。夏玉米中金玉2513的每平方米穗数为9.1,穗粒数为584.7,千粒重为379.31 g,单株产量为206.25 g,收获指数为0.58,水分利用效率为2.86 kg m^(-3),实际产量为18,110.55 kg hm^(-2)(折合1207.37 kg mu^(-1))。在2024年的重复试验中,小麦-玉米的实际产量继续达到30,997.00 kg hm^(-2)(折合2065.13 kg mu^(-1))。本文旨在总结高产纪录小麦-玉米复种高产田生产过程的主要管理环节和高产群体的主要指标,为山东北部沿海平原区小麦-玉米复种高产提供参考。展开更多
为在全球气候变化和碳循环研究的宏观背景下,深入探讨并准确分析区域碳储量的动态变化,同时对其未来趋势进行合理预测。通过耦合PLUS(patch-generating land use simulation model)模型与InVEST(integrated valuation of ecosystem serv...为在全球气候变化和碳循环研究的宏观背景下,深入探讨并准确分析区域碳储量的动态变化,同时对其未来趋势进行合理预测。通过耦合PLUS(patch-generating land use simulation model)模型与InVEST(integrated valuation of ecosystem services and trade-offs)模型,探讨了2010—2022年山东半岛城市群中代表性城市——潍坊市的碳储量时空演变规律,模拟了自由发展、耕地优先、发展优先、绿色优先这4种情境下2030年潍坊市碳储量的分布特征,同时使用XGBOOST+SHAP模型分析了潍坊市碳储量的驱动因素。研究结果表明:2010年至2022年潍坊市碳储量呈现出下降趋势,由2010年的16.56×10^(6)t下降至2020年的15.98×10^(6)t,主要原因为耕地面积的下降与不透水地面的扩张;在多情景模拟下,耕地优先情景下2030年碳储量总量最大,凸显了耕地作为重要碳汇的潜力及耕地保护策略的关键作用。而绿色优先情景略优于自由发展情景,通过促进林地发展增强固碳能力;发展优先情景下碳储量最小。温度和坡度对潍坊市碳储量的贡献较大,GDP和人口密度则对碳储量具有削弱作用,表明经济增长和城市扩张可能进一步加剧碳储量下降趋势。研究成果不仅揭示了城市群地区人类活动与自然生态系统间的复杂互动,还为制定科学合理的土地利用规划与碳减排策略提供了坚实的数据与理论支撑。展开更多
文摘This paper describes Mammalian fossils of 18 species discovered at Donghuangzhuang,about 15 km from NE of Qufu county,Shandong Province.The materials were collected bya farmer in 1984 and were sent to The Shandong Provincial Museum for studing.A short fieldinvestigation was made by Wang Jinwen,Sha Yesue(BGMRSD),Han Qingwen(SDM)andthe present author in same year.The age of the fauna is tentatively considered as the late Late Eocene,probably correlatedas the Heti Fauna(Yuanqu Basin).It represents the first occurrence of Late Eocene fossils inthis province.
文摘Tumen region is situated in the northwest of Yiyuan county, Shandong province, about 130 km to the east of Jinan city, the province captial. The geographical coordinates are 118°33′E longitude and 36°04′N latitude. The modern climate is a warm temperate monsoon forest type, with annual mean temperature of 13℃ and annual mean precipitation of 767 mm . The aridity is 11-- 3.0. So this region is the transitional environment between semiarid and
文摘The mineralogical features of the oxidation-reduction of graphite deposit in pingdu, Shandong province were studied by field search, polarization microscope, X-ray diffraction (XRD) and SEM. The results show that, the major rocks of the reduction graphite zone are graphite-quartz anorthosite, gabbro. The major rocks of the oxidation graphite zone are marble with graphite, biotite granite, monzogranite. The main minerals of the reduction zone are plagioclase, pyroxene, quartz, pyrite. The graphite is aphanitic graphite appearing as dense massive, layered, spherical aggregates. The main minerals of the oxidation zone are calcite, quartz, K-feldspar, biotite, amphibole, chlorite. The graphite is flake graphite uniformly dispersed in the loose, and strongly erosion rocks. A large number of rocks in the area have been suffered chloritization, regional metamorphism, indicating that the formation of the graphite deposit should be related with gabbro melting. The carbon source in the lower part was taken into the mine, and then experienced regional metamorphism.
基金Supported by the Knowledge Innovation Program of Chinese Academy of Sciences (KZCX2-EW-304)National Natural Science Foundation of China(40635029,40871257)
文摘Income inequality among farmers living in different regions was an important form of territorial inequalities. Studying the territorial inequality of the net income per peasant was an emphasis of this paper, and Shandong Province was pointed as the case study region. By the help of logistic regression, it could be found that the special distribution of the net income per peasant in Shandong Province was affected by three factors： distance to No.308 National Highway, distance to the coastline in the east of Shandong Province, and urbanization rates. Based on the decomposition of Gini index, the net income per peasant was divided into four parts, and it was found that the income from family business and salary were the two major sources of income. As to the mechanism for income inequality, it was proved that urbanization was still the key factor. In order to reduce income inequality, the local governments should promote urbanization through improving road networks, such as building highways, which could connect rural areas with the major nodes such as big cities and the port cities in the east.
文摘山东北部沿海平原区小麦-玉米周年两吨粮超高产技术创建是中国农业大学作物化控团队和莱州市金海种业在山东省莱州市开展的一项重要农业生产示范项目。通过精选良种、合理密植及水肥一体化等措施,以期实现小麦和玉米的高产高效种植。在2023年该地块小麦和玉米两季的种植中,现场实测每公顷的总产量达到了31,323.90 kg(折合2088.26 kg mu^(-1))。其中冬小麦由农业农村部组织专家测产打破了黄淮海地区小麦的单产纪录,实际产量高达13,213.35 kg hm^(-2)(折合880.89 kg mu^(-1))。种植品种烟农1212每平方米穗数为692.0,穗粒数为40.1,千粒重为52.55 g,单株产量为4.74 g,收获指数为0.56,水分利用效率为3.24 kg m-3。夏玉米中金玉2513的每平方米穗数为9.1,穗粒数为584.7,千粒重为379.31 g,单株产量为206.25 g,收获指数为0.58,水分利用效率为2.86 kg m^(-3),实际产量为18,110.55 kg hm^(-2)(折合1207.37 kg mu^(-1))。在2024年的重复试验中,小麦-玉米的实际产量继续达到30,997.00 kg hm^(-2)(折合2065.13 kg mu^(-1))。本文旨在总结高产纪录小麦-玉米复种高产田生产过程的主要管理环节和高产群体的主要指标,为山东北部沿海平原区小麦-玉米复种高产提供参考。
文摘为在全球气候变化和碳循环研究的宏观背景下,深入探讨并准确分析区域碳储量的动态变化,同时对其未来趋势进行合理预测。通过耦合PLUS(patch-generating land use simulation model)模型与InVEST(integrated valuation of ecosystem services and trade-offs)模型,探讨了2010—2022年山东半岛城市群中代表性城市——潍坊市的碳储量时空演变规律,模拟了自由发展、耕地优先、发展优先、绿色优先这4种情境下2030年潍坊市碳储量的分布特征,同时使用XGBOOST+SHAP模型分析了潍坊市碳储量的驱动因素。研究结果表明:2010年至2022年潍坊市碳储量呈现出下降趋势,由2010年的16.56×10^(6)t下降至2020年的15.98×10^(6)t,主要原因为耕地面积的下降与不透水地面的扩张;在多情景模拟下,耕地优先情景下2030年碳储量总量最大,凸显了耕地作为重要碳汇的潜力及耕地保护策略的关键作用。而绿色优先情景略优于自由发展情景,通过促进林地发展增强固碳能力;发展优先情景下碳储量最小。温度和坡度对潍坊市碳储量的贡献较大,GDP和人口密度则对碳储量具有削弱作用,表明经济增长和城市扩张可能进一步加剧碳储量下降趋势。研究成果不仅揭示了城市群地区人类活动与自然生态系统间的复杂互动,还为制定科学合理的土地利用规划与碳减排策略提供了坚实的数据与理论支撑。
