4) northwestern Guizhou Province
黔西北
1.
An Pots Experimental Study on Historical Pb-Zn Smelting Slag Land Reclamation in Northwestern Guizhou Province;
黔西北土法炼锌废渣场复垦试验研究
2.
Sulfur isotopic compositions of sulfide minerals of lead-zinc deposits in northwestern Guizhou Province were analyzed.
通过对黔西北地区铅锌矿中硫化物硫同位素的分析表明,各铅锌矿床具有硫同位素组成较为均一,但水城与赫章地区硫同位素组成差异显著的特点。
3.
The northwestern Guizhou Province is located in a rift basin with some lead-zinc deposits controlled by the faults and strata.
黔西北地区是一个裂谷盆地构造区,盆地内发育铅锌矿床,矿化受断裂和地层的联合控制。
5) northwest Guizhou
黔西北
1.
Cultivation Techniques of Quality Wheat for High Yield Efficiency in Particular Ecological Areas of Northwest Guizhou;
黔西北优质小麦高产高效栽培技术研究
2.
The Changes of Soil Environment during Natural Vegetation Restoration in Northwest Guizhou
黔西北植被自然恢复演替过程中土壤环境变化
3.
Study on the Species Diversity during the Natural Succession of Degraded Karst Vegetation in Northwest Guizhou
黔西北喀斯特区植被自然恢复演替过程中物种多样性研究
6) Northwest of Guizhou
黔西北
1.
Characteristics of Heavy Metal Pollution in Stream of Zinc Smelting Area, Northwest of Guizhou.;
黔西北炼锌地区河流重金属污染特征
2.
The Polluted Situation of Heavy Metals in Pb-Zn Mining Area of Northwest of Guizhou Province and the Evaluation of Environmental Impaction
黔西北土法炼锌矿区重金属污染现状及其环境影响评价
补充资料:川西北高原
中国五大牧区之一,四川最大牧业基地。位于省境西北部的甘孜、阿坝藏族自治州境内。面积约20万平方公里。其地理特征是:①地势高平。区内平均海拔在3000~4000米以上,是四川省地势最高地区。地表切割浅,除东南部相对高差500米,地貌上属山原外,其他地区均属丘原,高差一般在100~200米左右,山矮丘缓,丘坡多在5°~20°,为青藏高原东南边缘部分。谷地宽展,阶地广布,并有沼泽发育,以东北部的若尔盖地区沼泽面积最大(见若尔盖沼泽)。②气候奇寒。大部分地区年均温0~6℃,极端最低温-20℃以下,石渠为-38.9℃,有"四川寒极"之称。10℃以上活动积温1000~1500℃,全年长冬无夏,春秋相连,为四川热量最低地区。海拔3500~4000米以上地区种植业绝迹,4000~4200米以上地区则为森林分布的上限。除河谷和谷坡外,大部分地区以牧业为主。本区有草场1067万公顷,牦牛、绵羊等牲畜头数均居四川首位,是四川主要牧业基地。③太阳辐射强烈,光能资源丰富。区内地势高亢,空气稀薄,太阳年辐射量和年日照时数均为四川省最高值。丰富的光能资源在一定程度上弥补了地高天寒、热量不足的缺陷,因而种植业、林业、牧业上限均高于四川省其他地区。
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