Helium is a strategically key resource closely tied to national development and is one of China's extremely scarce mineral resources. Currently, the assessments of helium generation often rely on test results from core or field samples, making it difficult to conduct continuous, comprehensive evaluations of a region. To address this issue, considering that the helium generation is a function of the concentrations of radioactive elements uranium or thorium and time, a method for assessing helium resource based on natural gamma−ray spectrometry logging is proposed. By employing gamma detectors to measure the gamma spectra resulting from natural radioactivity in rock layers and analyzing the variations in gamma spectra caused by different radioactive nuclides, it becomes feasible to continuously determine the uranium and thorium content of each stratum. This result can then be utilized to analyse the helium release content of rock minerals, identify primary helium−bearing rocks, and evaluate the potential helium resources within the strata. Currently, this approach is being applied to forecast helium resource distribution and conduct strategic assessments in the Gucheng, Yakela, Tuofutai, Hetianhe area, as well as across the entire Tarim Basin. In the future, it is necessary to further refine the determination of the helium generation amount in crystalline basement, absolute ages of helium−releasing minerals, and the process of helium dissipation in gas reservoirs during the use of this method.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |