Опубликована: Янв. 1, 2024
Язык: Английский
IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium, Год журнала: 2024, Номер unknown, С. 1273 - 1279
Опубликована: Июль 7, 2024
Язык: Английский
Процитировано
0
Agronomy, Год журнала: 2024, Номер 14(10), С. 2182 - 2182
Опубликована: Сен. 24, 2024
With the development of multispectral imaging technology, retrieving soil heavy metal content using remote sensing images has become possible. However, factors such as pH and spectral resolution affect accuracy model inversion, leading to low precision. In this study, 242 samples were collected from a typical area Pearl River Delta, Cu in was detected laboratory. Simultaneously, Sentinel-2 image data collected, two-dimensional three-dimensional indices established. Constructing independent decision trees based on values, Successive Projections Algorithm (SPA) combined with Boruta algorithm select characteristic bands for content, Optuna automatic hyperparameter optimization ensemble learning models establish estimating soil. The research results indicated that SPA feature selection algorithm, mainly concentrated transformation forms TBI2 TBI4. Full-sample modeling lacked predictive ability, but after classifying value, R2 RF XGBoost constructed values between 5.85 7.75 0.54 0.76, respectively, corresponding RMSE 22.48 16.12 RPD 1.51 2.11. This study shows inversion under different conditions exhibits significant differences, determining optimal range can effectively improve accuracy. provides reference further achieving efficient accurate pollution agricultural
Язык: Английский
Процитировано
0
Agronomy, Год журнала: 2024, Номер 14(11), С. 2498 - 2498
Опубликована: Окт. 25, 2024
In recent years, biochar (BC) and biochar-based soil amendments (CSAs) have been widely used in agriculture the environment. present study, a two-rice-season field study was conducted to explore comprehensive effects of applying BC (1%) CSA (0.5% 1%) on organic carbon accumulation, acidification amelioration heavy metal availability soil–rice system. The results show that pH increased by 0.5–1.7 units 0.3–1.0 units, respectively, early rice season late treated compared with CK. Soil contents were 18–30% 15–25% amended treatments. addition, available phosphorus largely as result addition. CaCl2 extractable metals (Cd, Ni, Cu Zn) simultaneously decreased or amendments. Cd grain significantly reduced 25–48% 52–83% treatments, while Zn generally not affected. uptake Ni also CSA. This demonstrates application alone combinates inorganic (limestone, sepiolite potassium dihydrogen phosphate) can improve properties nutrient content decrease (especially for Ni) accumulation from grain, where combination is more effective.
Язык: Английский
Процитировано
0
Indian Journal of Agricultural Research, Год журнала: 2024, Номер Of
Опубликована: Июнь 11, 2024
Background: Coffee plants in Sumbermanjing Wetan are commonly cultivated on dry lands that rely solely rainfall as the source of water input eventually makes them susceptible to climate change. The deficiency organic material and availability for these poses a significant challenge coffee farmers Wetan. Therefore, research was conducted investigate addition various matter through biopore infiltration holes plantations with following objectives: i) analyze impact applying distribution soil pores ii) examine effect application moisture content. Methods: carried out Smallholder Plantation Argotirto Village, District, Malang Regency. A randomized block design implemented five treatment groups, which included control (P1), two + manure (P2), compost (P3), green (P4) surface-applied (P5), each repeated three times. observed variables percentage matter, pore distribution, available capacity Result: findings indicated enhanced content, where P4 (two manure) exhibiting highest values first third months after application. increased porosity all treatments, showing capacity. This suggests utilization can improve aggregation, thus increasing Consistently, content at depth 40-60 cm tended increase month application, indicating enhance subsoil.
Язык: Английский
Процитировано
0
Опубликована: Янв. 1, 2024
Язык: Английский
Процитировано
0