最新刊期
卷 ， 期 4 ， 1987
- 摘要：The land use investigation scaled 1:100,000 in Dangxiong county, Tibet has been Completed after efforts of 11 months. In the investigation multi-seasonal Landsat MSS images for which accurate geometric correction and image enhancement were made by IRSA-2 computer image processing system and black-white panchromatic aerial photographs were used as basic survey data. In the investigation the land use synthetical interpretation key table of the multi-seasonal Landsat MSS false color composite images and aerial photographs was established, the whole programs of IBM PC/AT computer that processed land acreage measurement data were completed, and a series of technical problems in the phase of indoor work were solved.The resulte proved that remote sensing method can get higher accuracy and better economic benefit than conventional method. The method study in Dangxiong county has provided useful references for the land use investigation in the whole plateau.
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发布时间：2021-06-10 - 摘要：The study and interpretation of urban environment of Tangshan were made with SPOT image, the present environmental map of Tangshan city is formed from their results. 3 level Ⅰ categories, 23 level Ⅱcategories and 15 level Ⅲ categories have been interpreted from SPOT composites. The effects of human activities are stressed on this map. The map represents the space structure, regional features of environment elements and natural landscape.The city Tangshan is reconstructed after a drastic earthquake in 1976. The distribution and structure of urban districts are rational. The environment is beautiful. The environment quality of Tangshan is by far better than before. But there is still something to be improved. For instance, the industrial distribution is concentrated excessively, it made urban environment too heavy load and environment pollution in some area very serious. So we need to strengthen protection and administration for the environment.
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发布时间：2021-06-10 - 摘要：In this paper, the results of Suizhou’s urban change analysis using sequential aerial photographs are introduced. A series of urban change maps were compiled after the interpretation and analysis of the sequential airphotos. On the basis of the series of maps and auxiliary data, the authors have made a quantitative and qualitative analysis of the historical process of urban expansion and the dynamic change of some urban elements.The results prove that a great deal of static and dynamic urban information could be derived easily and quickly from airphotos and that the sequential airphoto analysis is very useful for urban change analysis and urban management.
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发布时间：2021-06-10 - 摘要：The method of monitoring growth vigour cf winter wheat and estimating its yield using NOAA AVHRR, Landsat MSS, and spectral data has a good result Yunchen region, south part of Shanxi province.According to agricultural productive level and conditions several regions are divided and sample areas are also selected in these regions using multi-temporal Landsat MSS, NOAA AVHRR, and spectral data. The results of these data analysis show that there are close relationships in following aspects: between spectral index-IR/Red or （IR -Red）/（IR + Red） of NOAA AVHRR, Landsat MSS and yield of winter wheat, between image density and yiel dof winter wheat, between temperature of vegetation canopy and soil moisture, between image density of NOAA AVHRR Channel 4（thermal） and yield of winter wheat.
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发布时间：2021-06-10 - 摘要：Lop-nor has long been misunderstood as a "wandering lake". Its location, size, shape as shown on old maps and in past literatures are not correct. Began from the sixties, the aero-photos, and seventies, the Landsat images were obtained. They showed accurately all the detailed natural criteria of the Lop-nor: it had been a very stable, in-land lake, and was controlled by geo-tectonic and neo-tectonic in shape and evolutions. The water pouring into the lake from the rivers enormously deduced, and finally the lop-nor dried out totally at the beginning of seventies.The centeral part of the lake is located in the successive subsidence area of "Aqik Gra-ben". The author considers that this study has used all the recent remote sensing images with high precision so there should be no further rumor that the Lop-nor had been a wandering lake.Lop-nor was fed by two water systems, one of it was the river water that entered the NW part of Lop-nor-namely Kon-quie Dyria, the other was the river water both from Tarim and Cher-cheng, the discharge from the former was only a small proportion. The biggest surface area of the lake in the history had been about 12600 km , the lake in laterstage had a longer period of water storage, the water surface area was about 5140 km2. Before the Tarim river flew into the lake, it formed 5 overlapping, advancing alluvial fans, which meant 5 stages of sinking of Lop-nor.The occurence of "horst" in the W and NW part of Lop-nor is the conclusion of the author’s image interpretation. On the image, one cannot find a normal western lake margin. There had been small amount of water immersions on the most northern part of the horst that fed by the Konquie Dyria, but there was no trace of lake water that had immersed the whole horst. At the west wall （steep-bank） of the Fa, the Tarim River water flew along the bank towards N, but could not enter the lake.
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发布时间：2021-06-10 - 摘要：This paper is focused on the discussion of methodology of aerial remote sensing applied to comprehensive investigation into water coolent circulation of heat and power plant. Basis for the determination of instrument used, imaging hours, flight course and altitude, and for the calibration of the blackbody reference sources is analyzed both in theory and practicality, and the real time mesurement is made on water surface. Thus, much better experimental results have been achieved. The collected image data is enhanced using image processing facilities. The images of water surface temperature under the influence of different wind directions, the isotherm image and aquatic plants area image are produced. The discussion and analysis made on these results shows that the power facilities have not yet been operated in full load and the cooling potentiality of reservoir has not been fully exploited. It is our suggestion that all of the power plants possessing such conditions and facilities should conduct the investigation of this kind.
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发布时间：2021-06-10 - 摘要：The Zhuanglang river basin is situated in the eastern part of the Qilian Mountains. The principal geomorphic features of the river basin are as follows: 1. The current direction ot the mainstream in its upper reaches is NWW and is consistent with the regional structure line, but in its lower reaches the current direction of the mainstream is NS and is crossed with the regional structure line. 2. The growth of tributaries in the upper reaches is better than that in the lower reaches, where the pattern of drainage system is appeared as a poplar. 3. There is a fourth step of terrace belonged to the highest one of the region in the Jinqiang river basin of the upper reaches, but the terrace missed in the lower reaches.On the Landsat images, the auther further observed that both the Jinqiang Valley and the eastern adjacent Songshan sandbank are situated in the Jinqiang structure basin surrounded by mountains of geosynclinal fold. In fact, huth the fourth step of terrace in the Jinqiang Valley and the Songshan sandbank are the same level of landform, i.e. the top surface of the old accumulation in the Jinjiang structure basin. The Landsat image shows that the Jinqiang Valley cuts into this accumulation.It is believed that the features of the geomorphic growth of the Zhuanglang river basin are closely connected with the uplift of the Qinghai-Xizhang Plateau and are the result of the capture of the Jinqiang river by Zhuanglang river in the late Medial Pleistocene Epoch.
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发布时间：2021-06-10 - 摘要：The general optical composition equipment is unable to meet the requivements of Largesizd colour composition of satellite image. So a composition box, with an enlarger, has been developed for large-sized colour composition.This report introduces the principle of development and operation of transnit adjustment box, composition methods, points for attention and the experiences that we gained in the making of image with various sensitive material.As a result of the development of remote sensing technique, we now have various simple and convenient composition methods. The method that we introduce here is one of them.
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发布时间：2021-06-10 - 摘要：<正> 国际遥感与资源勘察专业讨论会于1987年2月9日至3月6日在意大利的里雅斯特（Trieste）举行。约有35个国家的一百多名专家、教授和从事遥感技术与应用研究的科技工作者出席了会议。其中中国代表8名。印发论文摘要40多篇。 在讨论会上,一些专家、学者介绍了遥感技术在考古学、天文学、地理学、地质学和物理学等学科的应用成果及研究现状,特别是近年来利用遥感技术和方法在水资源、地矿资源、农林牧资源的调查,农作物的估产,沙漠化监测以及环境与气候变化的监测等领域所
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发布时间：2021-06-10
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