四川城镇的地貌分类与灾害

对四川省的城镇进行了地貌分类,划分为平原型城镇、丘陵型城镇、山谷型城镇、高原型城镇等,并讨论了它们的特点.还分析了城镇地貌与灾害的关系;平原城镇的主要灾害是洪涝与沉陷;沿江城镇拔河高度低,易受洪水灾害;峡谷口的城镇洪灾严重;山区城镇多滑坡、泥石流;城镇建设时不合理改变地貌,会引起灾害.     

川西深切河谷负向垂直带景观特征研究

通过对川西深切河谷自然景观的特征及其形成条件的研究与对比,初步确定了本区河谷负向垂直带的景观类型,并对“垂直带基带”提出了新的见解.     

四川新都客家话音系

本文记录了四川新都客家话音系,对该音系声韵调特点及其配合规律进行了探讨。     

北方农牧交错带东段生长季气候变化与温水组合规律研究

北方农牧交错带东段是生态脆弱区,以雨养农业为主,作物产量受气候影响波动大.利用5个气象站近半个世纪的逐日气温与降水资料,使用墨西哥帽函数(MHF)小波、Mann-kendall非参数检验统计方法,研究了生长季内气候变化及温水组合规律.结果表明:≥10℃积温和生长季降水的振荡周期基本吻合,暖干与冷湿气候交替出现.生长季≥10℃积温的上升趋势达到显著水平(P<0.05),增加幅度为每10年72℃;降水的下降趋势不显著(P>0.05),全年降水和生长季降水变化为每10年-17.2 mm和-13.7 mm.≥10℃的初终日有明显的提前和滞后性.≥10℃积温充足,生长季降水占全年的88%.生长季降水分配极不均衡,雨热配合较好.     

The genesis of H2S in the Weiyuan Gas Field, Sichuan Basin and its evidence

The Sinian Dengying Formation gas pool in Weiyuan is the oldest large-scale sulfur-bearing gas field in China, which has a H2S content ranging from 0.8% to 1.4%. The Cambrian Xixiangchi Formation gas pool discovered recently above the Dengying Formation contains gas geochemical behaviors similar to those of Dengying Formation but different in sulfur isotopes of H2S. Investigations show that though these two Sinian and Cambrian gas pools are separate ones, they share the same Cambrian source rock. The higher dry coefficient, heavier carbon isotopes, sulfur isotopes of sulfide, lower filling of gas pools, formation water characteristics, reservoir properties and H2S distribution, indicate that H2S in both the Sinian and Cambrian gas pools originates from TSR. The sulfur isotopes of sulfates have shown that H2S was formed in respective pools, namely hydrocarbons charged into the pools reacted with the Dengying Formation and the Xixiangchi Formation gypsum （TSR）, respectively, to form H2S. Compared with sulfur isotopes of sulfates in each pool, δ^34S values of H2S are 8‰ lighter for the Dengying Formation pool and 12‰ lighter for the Xixiangchi Formation pool, respectively, which is attributed to the difference in temperatures of TSR occurrence. The reservoir temperature of the Xixiangchi Formation pool is about 40℃ lower than that of the Dengying Formation pool. Temperature plays a controlling role in both the sulfur isotopic fractionation and amounts of H2S generation during TSR.     

Control of coupling among three major factors for formation of high-efficiency gas reservoir——A case study on the oolitic beach gas reservoir in Feixianguan Formation in the northeast Sichuan Basin

Through a case study of the high-efficiency gas reservoir in Feixianguan Formation in the northeast Sichuan Basin, quantitative and semi-quantitative analyses of key elements such as hydrocarbon generation, migration and accumulation, and reservoir evolution as well as their interplay in the critical moment of reservoir formation controlled by the energy field were carried out, by means of numerical modeling of the energy field. It was found that the climax time for Permian hydrocarbon generation was Late Triassic-Early Jurassic and accumulation of oil and gas has resulted in large-scale paleoreservoirs in paleostructural traps in Feixianguan Formation, a process facilitated by fractures connecting the sources. The paleoreservoirs have been turned into high-efficiency gas kitchens due to pyrolysis, which resulted from deep burial at a temperature of 170―210 ℃ as induced by tremendously thick sedimentation in the foreland basin of Daba Mountain in Late Jurassic-Cretaceous period. Meanwhile, abundant acid gas like H2S produced from thermo-chemical sulfate reduction (TSR) at high temperatures leads to extensive dissolution of dolostone in the paleoreservoirs, which may in turn result in modification of the reservoirs and preservation of the reservoir rock porosity. The present distribution of gas reservoirs was ultimately determined in the processes of adjustment, cooling and decompression of the paleoreservoirs resulting from intense deformation in the front of Daba Mountain during the Himalayan orogeny.     

四川省实施退耕还林（草）工程的生态学建议

退耕还林（草）工程的实施，必须严格遵循生态原理。本文针对四川省生态环境特征，对四川实施退耕还林（草）工程提出了一些生态学方面的建议。     

四川马海毛物理机械性能的研究

根据国家标准对四川马海毛的部分物理机械性能进行了测定。结果表明：四川马海毛F3体制部毛纤维的平均直径，育成♂和♀分别为24．6μm（品质支数60^s）和25．4μm（品质支数48^s），成年♂和♀分别为26．2μm（品质支数58^s）和31．0μm（品质支数50^s）；细工不均率为10．6％；四川无髓马海毛6个月毛丛自然长度F1、F2、F3分别为39．5mm、86．5mm、102．4mm，平均伸直长度分别为50mm、116．9mm、122．3mm，长度变异系数分别为26．7％、30．8％、28．0％；F1、F2、F3单纤维断理解强力与断裂伸长率分别为：18．94CN、45．0％；单纤维断理解强力不均率分别为：18．55％、23．06％、32．16％；四川无髓马海毛的回潮率为14．78％，略大于我国洗净马海毛14％的公定回潮率；四川马海毛F1、F2、F3每10cm毛丛垂度的平均卷曲数分别为6个、5个和5个，上述参数说明，四川马海毛具有良好的可纺性。     

四川局部农耕区鸟类物种多样性

运用Shannon-Wiener指数、均匀度、杰卡德指数(Jaccard index)和索伦森指数(Sorenson quantitative index)等指标对样带间的鸟类物种多样性进行了比较。指出影响农耕区鸟类多样性的主要因素是空间异质性等。     

南水北调东线工程江苏段管理改革设计

简要介绍江苏现有江水北调工程管理情况，根据《南水北调总体规划》有关建设管理的要求，结合江苏江水北调工程的特点和40年运行经验，提出南水北调东线工程江苏段管理设计和改革的思路，即在管理模式上实现体制创新、机制创新、规则创新，在管理技术上打造计量准确的封闭水道、通讯畅通的信息渠道、水质良好的清水廊道、经济高效的输水通道，为南水北调工程管理奠定良好的技术、法律、经济基础．