寒冻土主要分布在气候严寒的地带，生态环境恶劣，土壤理化性质和营养条件差

Frigid permafrost is mainly distributed in areas with severe cold climate, with harsh ecological environment and poor soil physical and chemical properties and nutritional conditions. It is one of the most fertile alpine soils and has no value for agricultural and animal husbandry use. Straw mat soil is a kind of moist soil that grows densely in alpine dwarf grass meadows. It is mainly distributed on gentle hillsides on the original surface. The surface layer has turf ranging from 3 to 10 cm thick. The roots of the vegetation are interwoven like a felt, light, tough and elastic. Most of them are used as summer pastures. Black felt soil, brown-black felt soil, also called subalpine meadow soil, is a kind of soil developed under the plateau subtropical meadow vegetation. <br>The response of soil type mainly discusses the correlation between soil type and element content in the soil in the watershed of the study area. Count the types of each soil sample and the content of Cu, Zn and other elements in the sample. It can be seen from the table that the Cu element content of dark brown earth, brown earth and red soil is higher than that of black felt soil. Then, according to the interpolation results of the soil metal elements in the mineral resources development zone, the element abundance value of each soil type in the mining area is calculated. The <br>macro-scale land use type responds mainly to the content of Cu in the sediments of each land use type in the entire watershed. Values ​​are counted, and the specific results obtained are shown in Table 6. It can be seen from the table results that the maximum, average, and abundance values ​​of Cu element content in the river sediments corresponding to the forest land and grassland range are relatively large. Cultivated land, bare land, water systems, towns, and villages have relatively low content values, indicating that these land types are less affected by the development of mineral resources. The mining area is small, so the abundance value of metal elements is small, but the average value is high. <br>The macro-scale vegetation coverage response analysis is based on the previously obtained classification results of vegetation coverage in the study area, and statistics are related to the maximum, minimum, average, and abundance values ​​of Cu element content in the sediments of various levels of vegetation coverage in the entire watershed. The statistical results are shown in Table 7. It can be seen from the data in the table that with the increase of vegetation coverage, the mean value of Cu element content and the two abundance values ​​in river sediments gradually decrease. The content of Cu in the sediments of the high vegetation area is less, and the content of the element in the low vegetation area is higher.<br>Combined with the analysis of regional geological data, the study area mainly developed copper-zinc polymetallic sulfide deposits (points), copper-nickel polymetallic sulfide deposits (points), the distribution of deposits (points) and mica quartz schist, mica quartzite, metasandstone, granite and The close relationship between the granodiorite distribution areas is shown in Figure 6. These rock distribution areas generally have relatively high geochemical anomalies of Cu, Pb, Zn, and other elements. For example, the Liwu copper-zinc deposit located in the southern part of the study area is mainly composed of gray mica quartzite, mica feldspar quartzite, intercalated pure quartzite, mica quartz schist, mica schist, metagranulite, metamorphic basic, intermediate and alkaline secondary. Volcanic rock.

The cold permafrost is mainly distributed in the cold climate, the ecological environment is bad, the soil physical and chemical properties and nutritional conditions are poor, is one of the lowest fertility of the alpine soil, no agricultural and animal husbandry use value. Grass felt soil is a kind of moist soil that is densely born in alpine short meadows, mainly distributed in the original flat hillside, the surface has a thickness of 3 to 10 cm of grass, vegetation roots interwoven like felt-like, light and elastic, mostly used as summer pastures. Black felt soil, brown and black felt soil, also known as sub-alpine meadow soil, is a kind of soil developed under the vegetation of subtropical meadows in the plateau.<br>The response of soil type mainly discusses the correlation between soil type and element content in soil in the study area basin. Statistics of the type of each soil sample and the content of Cu, Zn and other elements in the sample, as can be seen from the table, dark brown soil, brown soil and red soil rich Cu element content is higher than black felt soil. The element abundance value of each soil type in the mining area is then statisticd according to the interpolation results of the soil metal elements in the Mineral Resources Development Zone.<br>The response of the macro-scale land use type is mainly to count the content value of Cu elements in each land-use type water system sediment in the whole basin, and the specific results are shown in Table 6. As can be seen from the table results, the maximum, mean and abundance values of Cu element content in water system sediments corresponding to forest land and grassland range are large. The content value of cultivated land, bare land, water system, towns and villages is small, which means that these lands are less affected by the exploitation of mineral resources. Mining land is small in scope, so the abundance of metal elements is small, but the mean is higher.<br>The response analysis of macro-scale vegetation cover is based on the results of vegetation cover classification obtained earlier, and the correlation values of Cu element content, minimum, mean and abundance are statistics in the water system sediments of vegetation cover area at all levels of the whole basin. The results are shown in table 7. As can be seen from the data in the table, with the increase of vegetation cover, the mean content of Cu elements and the two abundance values in water system sediments are gradually decreased. The content of Cu element is less in water system sediments in high vegetation areas and higher in low vegetation area.<br>Combined with regional geological data analysis, the main development of copper and zinc polymetallic vulcanized deposits (points), copper-nickel polymetallic vulcanized deposits (points), deposits (points) distribution and mica quartz rock, mica quartz rock, sandstone, granite and granite flashstone distribution areas are closely related as shown in Figure 6, these rock distribution areas in general have a higher Cu, Pb, Zn, and other elements geochemical anomalies. For example, the Liwu copper and zinc deposits located in the southern part of the research area are mainly gray mica quartz rock, mica long quartz rock, pure quartz rock, mica quartz rock, mica rock, granulated rock, metamorphic subvolutional rock.

The cold frozen soil is mainly distributed in the cold climate zone, the ecological environment is bad, the soil physical and chemical properties and nutrition conditions are poor, which is one of the most fertile Alpine soil, and has no agricultural and animal husbandry value. The felt soil is a kind of wet soil which is dense in the alpine meadow, mainly distributed on the flat slope on the original surface, with the turf of thickness of 3-10cm on the surface. The vegetation roots are interweaved like felt, light and flexible, and are mostly used as summer pastures. Felted soil and brown felted soil are also called subalpine meadow soil, which are developed under the subtropical meadow vegetation of plateau.<br>The response of soil type mainly discusses the correlation between soil type and soil element content in the basin. The types of each soil sample and the contents of Cu and Zn in the samples are statistically analyzed. It can be seen from the table that the Cu elements in dark brown soil, brown soil and red soil are higher than that of felted soil. Then, according to the interpolation results of soil metal elements in Mineral Resources Development Zone, the element abundance value of each soil type in the mining area is calculated,<br>The response of macro-scale land use type is mainly to statistics the Cu content value of each type of land use type sediment in the whole basin. The specific results are shown in Table 6. The results show that the maximum, mean and abundance of Cu in the sediment of water system corresponding to the forest land and grassland are larger. The content of cultivated land, bare land, water system, town and village is small, which indicates that these land types are less affected by the development of mineral resources. The mining land is small, so the abundance value of metal elements is small, but the average value is higher.<br>The response analysis of macro-scale vegetation cover is based on the results of vegetation coverage classification in the study area, and the maximum, minimum, mean and abundance of Cu elements in the sediment of the river system in the vegetation coverage area of the whole basin are calculated. The statistical results are shown in Table 7. It can be seen from the data in the table that the average Cu content and the two abundance values of the sediment in the river system decrease gradually with the increase of vegetation coverage. The Cu content in the sediment of the water system in the high vegetation area is less, and the element content in the low vegetation area is higher.<br>According to the analysis of regional geological data, the research area mainly develops copper zinc polymetallic sulfide deposits (points), copper nickel polymetallic sulfide deposits (points), and the distribution of deposits (points) is closely related to the distribution areas of mica quartz schist, mica quartz rock, metastone, granite and granodiorite, as shown in Figure 6. The distribution areas of these rocks generally have higher geochemical anomalies of Cu, Pb, Zn and other elements Display. For example, the Liwu copper zinc deposit located in the south of the research area is mainly gray mica quartz, mica feldspathic quartz, mixed with pure quartz, mica quartz schist, mica schist, granulite, metamorphic base, and medium alkaline sub volcanic rock.<br>