The Variation Of Cultivated Area In The Yellow River Huangshui River

The Variation Of Cultivated Area In The Yellow River Huangshui River In this study, cropland changes at the yellow river huangshui river valley, as a typical agro pastoral transition zone in northwestern china, is analyzed in terms of the changes of total. In this study, cropland changes at the yellow river huangshui river valley, as a typical agro pastoral t [ ] mining of coal resources in an area with a high groundwater level causes.

The Variation Of Cultivated Area In The Yellow River Huangshui River The yellow river huangshui river valley(yhv) located in the northeast edge of the qinghai tibet plateau is a typical farming pastoral area. since the qing dynasty, the expansion of cultivated land has led to a significant change in forest and grassland cover in this region. The huangshui river is the largest first level tributary of the upper reaches of the yellow river. the study area (36°20′–37°47′ n, 100°86′–102°70′ e) is located in the upper middle reaches of the huangshui river and in the intersection zone of the northwestern tibetan plateau and western loess plateau [22,23], covering 10. The area of land use type change in the yrb increased by 64,356 km 2 between 1990 and 2020. each land type's area has changed to varying degrees. cultivated land and construction land are the two land types that have seen the most changes. the area of cultivated land has shrunk by 8663 km 2, while the area of construction land has grown by. According to the combination of grain production and cultivated land area changes in 2000–2010 and 2010–2020, the lower reaches of the yellow river are divided into four patterns: ① the cultivated land area increases and the grain production increases. ②the cultivated land area decreases and the grain production decreases. ③the.

The Variation Of Cultivated Area In The Yellow River Huangshui River The area of land use type change in the yrb increased by 64,356 km 2 between 1990 and 2020. each land type's area has changed to varying degrees. cultivated land and construction land are the two land types that have seen the most changes. the area of cultivated land has shrunk by 8663 km 2, while the area of construction land has grown by. According to the combination of grain production and cultivated land area changes in 2000–2010 and 2010–2020, the lower reaches of the yellow river are divided into four patterns: ① the cultivated land area increases and the grain production increases. ②the cultivated land area decreases and the grain production decreases. ③the. The results show that the cropland area of yhv in 1726 was 1.427×103 km2, among which, 64.7% was cultivated by the minority as well as 35.3% was cultivated by soldiers and chieftain. the arable land of yhv is little due to the harsh natural environment. As the largest tributary of the upper area of the yellow river, huangshui river is located in the inter laced zone of qinghai tibet plateau and the loess plateau (fig.1). the total basin area is 32900 km2, the elevation is 1600~4800m [13]. the region is an arid, semi arid continental climate, four seasons change obviously. the average. Cropland distribution mainly depends on the suitability of land for reclamation, which is affected by a variety of natural environmental conditions. in this study, we first analyzed the relationship between environmental factors and the distribution of cultivated land in the tibetan plateau. In this study, cropland changes at the yellow river–huangshui river valley, as a typical agro pastoral transition zone in northwestern china, is analyzed in terms of the changes of the total amount and spatial pattern over the past 300 years (majorly in the qing dynasty).